The method of producing vinyl acetate using a catalyst of palladium - gold - copper

 

(57) Abstract:

Getting vinyl acetate is implemented by the interaction of ethylene, oxygen and acetic acid using as a catalyst a metal palladium, gold and copper on the media. In the original raw material is introduced, halogen-free copper and it is in contact with the catalyst on the porous surfaces of which is deposited catalytically effective amounts of metallic palladium, gold and copper. Copper is a soluble salt, which is sprayed in an amount of from 10 eres, up to 50 ppm in aqueous solution in the flow of raw material. Preferably, the carrier is silica, which is impregnated with an alkali metal acetate. Technical result - increase the service life of the catalyst and its effectiveness in relation to the selectivity of the process. 18 C.p. f-crystals.

The invention relates to a new and improved method of producing vinyl acetate ("VA") by reaction of ethylene, oxygen and acetic acid. In particular, the present invention relates to the use of halogen-free compounds of copper in obtaining VA.

Known to produce vinyl acetate by reaction of ethylene, to the media. At that time, as a method of using such a catalyst, capable of producing vinyl acetate with relatively high levels of performance, any way, leading to greater productivity during the life of the catalyst, would be very desirable.

The following links may be considered material for the present claimed invention.

U.S. patent 5332710, issued July 26, 1994 (Nicolau et al), describes a method of producing a catalyst useful for obtaining vinyl acetate by reaction of ethylene, oxygen and acetic acid, comprising the impregnation of porous media, water-soluble salts of palladium and gold, the recording media of palladium and gold in the form of insoluble compounds, dive and surface finishing process impregnated carrier in the reaction solution to precipitate such compounds, and then restore the connection to the free metal form.

U.S. patent 5347046, issued September 13, 1994 (White et al), describes catalysts for the production of vinyl acetate by reaction of ethylene, oxygen and acetic acid containing metal palladium group and/or its connection, gold and/or its connection and copper, Nickel, cobalt, iron, margana is availa able scientific C with the present invention features a method of producing vinyl acetate by reaction of ethylene, oxygen and acetic acid with a low selectivity for carbon dioxide using a catalyst containing a porous media, porous surface which precipitated catalytically effective amounts of metallic palladium, gold and copper, which do not contain halogen compound include copper in the raw materials reagents for the method. Through this method replenishes the amount of copper lost by the catalyst due to volatilisation during long-term use, leading to a smaller increase in the selectivity to carbon dioxide and, consequently, the lower the loss of performance vinyl acetate, due to such use, than in the case where copper is not included in the feedstock.

The invention is a discovery, not previously appreciated, consisting in the fact that the time of receipt of vinyl acetate using a catalyst of palladium - gold - copper media, the content of copper in the catalyst tends essentially to decrease during the life of the catalyst, i.e., before it is necessary to replace or regenerate the catalyst, which may approach or exceed two years. This loss of copper is, obviously, Katalizator, reacts with one or more reagents, forming a connection with a tendency to sublimirovanny. In the method according to the present invention, however, a significant amount or all copper is initially deposited on the surfaces of the catalyst carrier, which would generally be lost during the life of the catalyst is replaced by copper in the feedstock. This leads to a smaller decrease in the amount of copper in the catalyst due to sublimirovanny than in the case where copper is not included in the feedstock. In this regard, it is noted that while the selectivity for carbon dioxide method of producing vinyl acetate using any catalyst palladium-gold on the media, seek to increase during the life of the catalyst, i.e., from the time when fresh catalyst loaded into the reactor until the time of reactor shutdown to replace or regenerate the catalyst, such selectivity for carbon dioxide, as a rule, lower than during any point in the life of the catalyst when the catalyst contains a certain amount of copper in addition to palladium and gold than in the case where copper is missing or there is less copper. Thus, the loss of a smaller amount of copper during the life of ka is m when applying the catalyst platinum-gold-copper, in which copper is not included in the feedstock.

The material of the catalyst carrier consists of particles having any of various regular or irregular, such as spheres, tablets, cylinders, rings, stars or other shapes, and may have dimensions, such as diameter, length or width from about 1 to about 10 mm, preferably from about 3 to 9 mm Sphere having a diameter of from about 4 to about 8 mm, are preferred. The material of the carrier may consist of any suitable porous material, for example silicon dioxide, alumina, silica - alumina, titanium dioxide, zirconium dioxide, silicates, aluminosilicates, titanates, spinel, silicon carbide or carbon such compounds.

The material of the carrier may have a surface area in the range of, for example, from about 10 to about 350 m2/g, preferably from about 100 to about 200 m2/g, the average pore size in the range of, for example, from about 50 to about 2000 angstroms, and a pore volume in the range of, for example, from about 0.1 to 2, preferably from about 0.4 to about 1.2 ml/g

Upon receipt of the catalyst used in the method according to the present porous surface of the particle carrier. To accomplish this purpose may be used various methods, each of which involves the simultaneous or separate impregnation of the carrier with one or more aqueous solutions of water-soluble compounds of copper, palladium and/or gold. The palladium (II) chloride, sodium chloride palladium (II), potassium chloride, palladium (II) nitrate, palladium (II) or sulfate, palladium (II) are examples of suitable water-soluble compound of palladium, at that time, as salt of an alkali metal, e.g. sodium or potassium salt of chloride of gold (III) or tetrachlorozincate (III) may be used as water-soluble gold compounds, and the trihydrate or uranyl nitrate copper (II) chloride copper (II) (anhydrous or dihydrate), monohydrate copper acetate (II)sulphate of copper (II) (anhydrous or pentahydrate), copper bromide (II), or formate, copper (II) (anhydrous or tetrahydrate) can be used as a water-soluble copper compounds. Salt of alkaline metal tetrachloroaluminate (III) chloride, sodium palladium (II) nitrate trihydrate copper (II) or copper chloride (II) are preferred salt for impregnation because of their good solubility in water.

As mentioned above, for impregnation of palladium, gold) impregnation perform through the "initial humidity", in which the amount of solution of water-soluble compounds of the metal used for impregnation is from about 95 to about 100% of the absorption capacity of a material medium. The concentration of the solution or solutions is that the number of elemental palladium, gold and copper in the solution or solutions which are absorbed on a carrier, is required to a predefined number. If you are performing more than one such impregnation, then each impregnation may contain the equivalent of water-soluble compounds, equivalent to all or only part of one or any combination of the three catalytically active metal desired in the final catalyst, while the quantity of these metals in the overall composition of absorbable impregnating solutions is equal to the desired final quantities. In particular, it may be desirable to impregnate the carrier more than one solution of water-soluble gold compounds, as more fully described hereinafter. Impregnation are such to provide, for example, from about 1 to about 10 grams of elemental palladium; for example, from about 0.5 to about 10 grams of elemental gold; and, for example, from about 0.3 to about 5.0 grams, preferably from pri about 10 to about 125% based on the weight of palladium.

After each impregnation of the carrier with an aqueous solution of water-soluble salt of a catalytically active metal "record", i.e. precipitated as insoluble compounds, as, for example, hydroxide by reaction with an appropriate alkaline compound, for example, hydroxide, silicate, borate, carbonate or bicarbonate of an alkali metal, in an aqueous solution. The hydroxides of sodium and potassium are the preferred alkali locking connections. Alkali metal alkaline compound should be in the number, for example, from about 1 to about 2, preferably from about 1.1 to about 1.6 moles per mole of the anion present in the water-soluble salts. Fixing metal can be performed by the method of initial humidity, in which the impregnated carrier is dried, for example at a temperature of 150oC for one hour, put in contact with a quantity of a solution of alkaline material, approximately 95-100% of the pore volume of the medium, and incubated for a period of from about 1/2 hour to about 16 hours; or recommissioned method, where the impregnated carrier without drying immersed in a solution of alkaline material and rotate and/or galuut during at least the initial period of the aqueous water-insoluble compounds. The rotation and the surface finishing process can be performed, for example, from about 1 to about 10 rpm for from about 0.5 to about 4 hours. Consider acommercially method described in U.S. patent 5332710, full details of which are included by reference.

Fixed, i.e., precipitated compounds of palladium, gold and copper can then be recovered, for example, in the vapor phase with ethylene, for example, 5% in nitrogen at 150oC for about 5 hours after the first washing of the catalyst containing the fixed metal compounds, until it becomes free from anions, such as halides, and drying, for example, if 150oC for about 1 hour, or such recovery may be carried out before washing and drying in the liquid phase at room temperature with an aqueous solution of hydrazine hydrate, where the excess of hydrazine over the amount necessary to restore all of the metal compounds present on the carrier is in the range of, for example, from about 8:1 to about 15:1, followed by rinsing and drying. Can be used with other reducing agents and methods for recovering the fixed metal compounds present on the media, as it is known from urbanog metal, although there may be small amounts of metal oxide. Upon receipt using more than one stage impregnation and fixation, it is possible to recover after each stage of fixation or after the total amount of metal elements recorded on the media.

As an example, the above-mentioned main routine method "separate record" can be used to fix the catalytically active metal elements on the carrier and recovering water-insoluble metal compounds to the desired free metal form. In this method, using a specific procedure that was previously described, the carrier is first impregnated with an aqueous solution of water-soluble compounds of palladium and copper by the method of initial moisture content, and palladium and copper are then fixed by treatment of the alkaline fixing solution by traditional methods such as the method of initial humidity or acommercially, preferably acommercially. The catalyst was then dried and separately impregnated with a solution of a soluble gold compounds having the number of elemental gold, desired in the catalyst, and the gold record clicks the touch of humidity. If the gold must be fixed using the method of initial moisture content, such fixing may be combined with the stage of impregnation using a single aqueous solution of a soluble gold compounds and alkaline locking connection in a quantity in excess of the required volume to turn all the gold in solution in a fixed insoluble compound, such as gold hydroxide, gold. If as a reducing agent it is necessary to use hydrocarbons, such as ethylene or hydrogen in the vapor phase, the catalyst containing the fixed metal compounds, washed until then, until it becomes free from anions, dried and restore ethylene or other hydrocarbon, as described previously. If as a reducing agent it is necessary to use hydrazine in liquid phase, the catalyst containing the fixed metal compounds, treated with an aqueous solution of excess hydrazine hydrate before washing and drying to recover the metal compound to free metal and the catalyst is then washed and dried as described.

Another alternative method of producing the catalyst predm and copper during the first impregnation, the metal is fixed by reaction with an alkaline fixing connection through rotary dip, fixed metal compounds reduced to the free metals, for example, ethylene or hydrazine hydrate, washing and drying is carried out to recover the ethylene or after reduction with hydrazine. The catalyst was then impregnated with the remaining gold in the form of a solution of water-soluble gold compounds and the catalyst is again restored, for example, ethylene or hydrazine, after or before washing and drying, as described earlier.

A useful variant of the catalyst, which can be used in the method according to the present invention, a porous medium, the porous surfaces of which is deposited metallic copper in an area surrounded by a coating of catalytically effective amounts of metallic palladium and gold, neither of which is essentially not mixed with the above-mentioned copper. This catalyst can be obtained using different methods of impregnation, fixation and recovery, as described previously. The use of this catalyst, in which the area of copper surrounded by palladium and gold and, therefore, less copper is exposed to the outside of the reactor aslavital, during the life of the catalyst.

After the catalyst containing palladium, gold and copper in the free metal form, precipitated material media, get through any of the aforementioned methods, it is advantageous additionally to impregnate with a solution of acetate of an alkali metal, preferably potassium acetate or sodium, and, more preferably, potassium acetate. The catalyst is then dried so that the resulting catalyst contains, for example, from about 10 to about 70 g, preferably from about 20 to about 60 g of the acetate of alkali metal per liter of the resulting catalyst.

When the vinyl acetate get through the method according to the present invention, the tray gas, which contains ethylene, oxygen or air, acetic acid, a compound of copper, not containing halogen and preferably, alkali metal acetate, passed over the catalyst. The connection of copper, not containing halogen, preferably is somewhat water-soluble or soluble in acetic acid, for example at least about 0.3 g/l at 20oWith, and may be, for example, acetate dihydrate copper (II), which is preferred, trihydrate or exagerration) and similar compounds. The composition of the gas stream may vary within wide limits, taking into account the limits of explosion hazard. For example, the molar ratio of ethylene to oxygen can be, for example, from about 80:20 to about 98:2, the molar ratio of acetic acid to ethylene may be, for example, from about 100:1 to about 1:100, the content of copper compounds may be such as to ensure, for example, from about 10 ppb (parts per billion) up to about 50 ppm (parts per million), preferably from about 20 hours on the MLR. up to approximately 10 hours per million of elemental copper relative to acetic acid in the flow of raw materials and the content of the acetate of an alkali metal, if used, may be, for example, approximately 2-200 PM per million , in relation to the use of acetic acid. The connection of copper and alkali metal acetate can be conveniently added to the flow of raw material injection into the flow of the aerosol aqueous or acetic acid solution of both compounds or separate aqueous solutions of each compound, with the amount of solution and the concentration levels of compound sufficient to provide the required levels of added copper and alkali metal acetate, in order to replenish the loss of the entire amount or part of these components for about the bound gases, as, for example, nitrogen, carbon dioxide and/or saturated hydrocarbons. The reaction temperature, which can be used are elevated temperatures, preferably temperatures in the range of about 150-220oC. the Applied pressure can be slightly reduced pressure, normal pressure or increased pressure, preferably a pressure of up to about 20 atmospheres gauge.

The presence of copper in the catalyst, as a rule, leads to higher initial selectivity and performance vinyl acetate in the method of obtaining a VA due to lower selectivity for CO2than in the case of the catalyst is limited to the equivalent quantities of palladium and gold as catalytically active metals. However, because of the loss of copper due to its volatilization during VA reactions, the fall of the selectivity and performance of vinyl acetate, and the increase in selectivity for CO2during the life of the catalyst tends to be higher than if the speed copper losses would be significantly reduced.

When should the procedure described here, except that 0.5 hours per million acetate dihydrate copper (II) based on the acetic acid EXT is aamoi, when the connection of copper do not include commodity flow, as the initial catalyst composition is the same. However, when the process continues far beyond its starting point, the copper loss is less when the raw stream contains copper acetate (II), since the deposition of copper acetate from the raw stream of catalyst particles tends to Deposit copper losses due to volatilisation.

You must understand that, although the present invention describes the addition of a supply current to metallic copper in combination with catalyst Pd/Au/Cu, other raw streams will work with the appropriate combination of metal catalyst. For example, a raw stream of copper acetate to replenish the loss of copper due to volatilisation of copper; like the flow of potassium acetate or cadmium will replenish potassium or cadmium, respectively, lost in Pb/Au/K or Pb/Au/Cd catalyst.

1. The method of producing vinyl acetate by reaction of ethylene, oxygen and acetic acid as reactants in the presence of a catalyst containing metallic palladium, gold and copper on a porous carrier, characterized in that it contains the contacting of the reactants and does not contain halogen compounds of copper catalyst societalization palladium, gold and copper, and copper is introduced into the feedstock.

2. The method according to p. 1, characterized in that the said compound of copper is a soluble salt and is sprayed in the form of an aqueous solute in the flow of raw material containing the above reagents.

3. The method according to p. 1, characterized in that the said compound of copper is a dihydrate of copper acetate (II).

4. The method according to p. 1, characterized in that the said compound of copper is added in amount to provide from about 10 PM to 1 billion. up to about 50 hours at 1 million of elemental copper in the calculation of the amount of acetic acid in the flow of raw materials.

5. The method according to p. 4, characterized in that the said amount of copper compounds provides from about 20 PM to 1 billion. until about 10 o'clock to 1 million of elemental copper in the calculation of the amount of acetic acid in the flow of raw materials.

6. The method according to p. 1, characterized in that the said porous carrier is a silica.

7. The method according to p. 1, characterized in that said catalyst contains from about 0.3 to about 5.0 g of copper per 1 liter of the catalyst.

8. The method according to p. 7, characterized in that the said amount of copper is from primator contains from about 1 to about 10 g of palladium and from about 0.5 to about 10 grams of gold per 1 liter of the catalyst, moreover, the amount of gold is from about 10 to about 125 wt.% based on the palladium content in the catalyst.

10. The method according to p. 1, characterized in that the said catalyst is impregnated with an alkali metal acetate.

11. The method according to p. 10, characterized in that said alkali metal acetate is the acetate of potassium, which is present in the catalyst in an amount of from about 10 to about 70 g/l of catalyst.

12. The method according to p. 1, characterized in that the said catalyst is produced by impregnating a porous support with an aqueous solution of water-soluble salts of palladium and copper, recording mentioned palladium and copper in the form of water insoluble compounds by reaction with an appropriate alkaline compound, followed by impregnation of the catalyst with a solution of water-soluble gold salts, and the number of elemental palladium, copper and gold in the impregnating solutions used for impregnation is equal to the predefined amounts of metallic palladium, copper and gold, desired in the catalyst, fixing the gold catalyst present in the solution for the last impregnation, through the interaction of water-soluble salts, restaurantat, and restoration to the free metal form is not water-soluble compounds of palladium, copper and gold present in the catalyst.

13. The method according to p. 12, characterized in that after the recovery of the total amount of palladium, copper and gold in the catalyst, the catalyst is impregnated with a solution of acetate of an alkali metal.

14. The method according to p. 12, wherein upon receipt of the above mentioned catalyst is a water-soluble salt of copper is a nitrate trihydrate copper (II) or chloride dihydrate, copper (II) mentioned water-soluble palladium salt is a chloride, palladium (II) chloride, sodium palladium (II), potassium chloride, palladium (II) nitrate, palladium (II) or sulfate, palladium (II) mentioned water-soluble salt of gold is a salt of an alkali metal chloride, gold (III) or tetrachlorozincate (III) and the above-mentioned alkaline compound for fixing the palladium, copper and gold represents the sodium hydroxide.

15. The method according to p. 10, characterized in that said alkali metal acetate is the acetate of potassium.

16. The method according to p. 1, characterized in that the catalyst is obtained by impregnation of the support with a solution of water-soluble what about the catalyst, and also contains a water-soluble salt of gold in quantities forming part of the elementary gold that is required on the final catalyst, the fixing of palladium, copper and gold in the final solution in the form of water insoluble compounds, by rotation and/or Saltovka impregnated carrier when it is immersed in a solution of the corresponding alkali compounds, recovery of fixed palladium, copper and gold to their metallic state, by impregnation of the catalyst remaining part of the solution of water-soluble gold salts in an amount such that the total content of elemental gold was equal to its required amount in the final catalyst, with the latter solution also contains the number of the corresponding alkali compounds, sufficient to capture the added gold in the form of a water-soluble compound, the recovery of fixed added gold to their free metallic state.

17. The method according to p. 16, characterized in that after the recovery of the total amount of palladium, copper and gold in the catalyst, the catalyst is impregnated with a solution of acetate of an alkali metal.

18. The method according to p. 16, characterized in that Each nitrate copper (II) or chloride dihydrate, copper (II), mentioned water-soluble palladium salt is a chloride, palladium (II) chloride, sodium palladium (II), potassium chloride, palladium (II) nitrate, palladium (II) or sulfate, palladium (II) mentioned water-soluble salt of gold is a salt of an alkali metal chloride, gold (III) or tetrachlorozincate (III) and the above-mentioned alkaline compound for fixing the palladium, copper and gold represents the sodium hydroxide.

19. The method according to p. 17, characterized in that said alkali metal acetate is the acetate of potassium.

 

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FIELD: vinyl acetate production by ethane catalytic acetoxylation with acetic acid obtained as intermediate.

SUBSTANCE: claimed method includes: a) bringing gaseous raw material, containing ethane as a main component, into contact in the first reaction zone with molecular oxygen-containing gas in presence of catalyst to obtain the first product stream including acetic acid and ethylene; b) bringing the said first product stream in second reaction zone with molecular oxygen-containing gas in presence of catalyst to obtain the second product stream including vinyl acetate; c) separation the second product stream from stage b) to recovery of vinyl acetate. In the first reaction zone catalyst of general formula MOaPdbXcYd is used, wherein X is at least one element selected from Ti, V, and W; Y is at least one element selected from Al, Bi, Cu, Ag, Au, K, Rb, Cs, Mg, Ca, Sr, Ba, Nb, Sb, Si, and Sn; a, b, c, and d are gram-atom ratio, and a = 1; b = 0.0001-0.01, preferably 0.0001-0.005; c = 0.4-1, preferably 0.5-0.8; and d = 0.005-1, preferably 0.01-0.3. Gaseous raw material from step a) preferably includes ethane and molecular oxygen-containing gas in volume ratio of ethane/oxygen between 1:1 and 10:1, and 0-50 % of vapor as calculated to total volume of starting raw material. Ratio of selectivity to ethylene and selectivity to acetic acid in the first product stream is 0:95-95:0.

EFFECT: integrated technological cycle with controllable product yield while changing technological parameters of the process.

6 cl, 11 ex, 2 tbl, 1 dwg

FIELD: catalyst carrier materials.

SUBSTANCE: microspherical particles are manufactured by adding specified proportion of fine, preferably reused particles to suspension of silica sol and silica powder, which suspension is then subjected to spray drying to form microspherical particles, which are finally calcined. Thus obtained particles are suitable for use as carrier for catalytically active component when preparing catalyst employed in fluidized-bed form in production of monomers used as vinyl polymer precursors.

EFFECT: increased abrasion resistance of particles.

10 cl, 1 tbl, 9 ex

FIELD: chemistry.

SUBSTANCE: invention relates to a layered composite, method of making and method of converting hydrocarbons using said composite. A layered composite is described for catalytic production of alkenyl alkanoates, containing an inner core and an outer layer, which contains heat-resistant inorganic oxide, a fibrous component, inorganic binder and palladium, gold or their mixture as the catalytic component, dispersed in the outer layer. A method is described for production of alkenyl alkanoates, involving bringing a mixture of alkene, alkanecarboxylic acid and oxygen-containing gas into contact with the catalyst described above. A method is also described for making a catalyst for production of alkenylalkanoate, involving coating an inner core with a suspension, containing an outer heat-resistant inorganic oxide, fibrous component, inorganic binder precursor, organic binder and solvent, so as to obtain a core with an outer coating layer, and baking at temperature below 200C for a period of time sufficient for binding the outer layer to the inner core, so as to obtain a layered composite, which contains a catalytic component containing palladium, rhodium, gold or their combination.

EFFECT: obtaining high-strength catalyst.

28 cl, 5 ex

FIELD: chemistry.

SUBSTANCE: present invention relates to a method of producing a catalyst or procatalyst, to catalysts for producing alkenylalkanoates and a method of producing alkenylalkanoates. A method is described for making a catalyst or procatalyst, suitable for use together to produce alkenylalkanoates, involving bringing palladium-, gold- and rhodium-containing precursors into contact with carrier material, calcination in a non-reducing atmosphere, reduction of the palladium-, gold- and rhodium-containing precursors as a result of bringing reducing medium into contact with carrier material and bringing acetate of an alkali metal into contact with reduced carrier material. Described is a catalyst composition for producing alkenylalkanoates which contains: carrier material, which contains at least palladium, rhodium, gold and acetate of alkali metal which are brought into contact with the carrier material, obtaining a catalyst or procatalyst for producing alkenylalkanoates, where at least palladium and rhodium are calcined in a non-reducing atmosphere. Also described is a method of producing alkenylalkanoates, involving bringing initial material, which contains alkene, alkane acid and oxidising agent into contact with the above described catalyst or procatalyst.

EFFECT: increased activity and selectivity of catalyst for producing alkenylalkanoates.

41 cl, 6 tbl,12 ex

FIELD: chemistry.

SUBSTANCE: present invention relates to catalysts, methods of preparing catalysts and methods of producing alkenyl alkanoates. A method is described for preparing a catalyst suitable for use in production of alkenyl alkanoates, involving: deposition of a first carrier material and binding agent on a second carrier material to obtain layered carrier material in form of particles with an inner and an outer layer, where catalyst components in form of palladium, gold or combinations thereof are contained in the outer layer of the layered carrier material. A catalyst is also described for producing alkenyl alkanoates, which contains: layered carrier material in form of particles with at least an outer layer containing a first carrier material and binding agent, and an inner layer containing a second carrier material, where the outer layer contains at least palladium combined with gold which is in contact with it to obtain the catalyst, where the inner layer essentially does not contain palladium and gold. A method is described for producing alkenyl alkanoates, involving: bringing raw material containing alkene, alkanoic acid and oxidising agent into contact with a catalyst prepared using the method described above.

EFFECT: improved production of alkenyl alkanoates, reduced amount of by-products and increased efficiency of production.

44 cl, 6 tbl, 15 ex

FIELD: chemistry.

SUBSTANCE: present invention relates to a method of preparing a catalyst or procatalyst suitable for use in production of alkenylalkanoates, to a catalyst composition for production of alkenylalkanoates and to a method of producing alkenylalkanoates. The invention describes a method of preparing a catalyst or procatalyst which involves bringing at least one solution of a catalyst component precursor which contains palladium or gold into contact with support material, where at least one solution of the catalyst component precursor is an aqueous solution which contains one or more of Pd(NH3)2(NO2)3, Pd(NH3)4(OH)2, Pd(NH3)4(NO3)2, Pd(NH3)4(OAc)2, Pd(NH3)2(OAc)2, Pd(NH3)4(HCO3)2) and of NaAuO2, KAuO2, NMe4AuO2 and HAu(NO3)4 in nitric acid or their combinations and reduction of palladiuim or gold when the reducing medium is brought into contact with the support material. The invention describes a catalyst composition which contains support material containing at least palladium and gold which is brought into contact with the support material to obtain a catalyst or procatalyst using the method described above. Described also is a method of producing alkenylalkanoates which involves bringing starting material which contains alkene, alkanoic acid and oxidising agent into contact with a catalyst or procatalyst described above.

EFFECT: reduced amount of by-products and more efficient production of alkenylalkanoates.

32 cl, 6 tbl, 15 ex

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