Method of producing bis-semiquinolates of cobalt (ii), manganese (ii) and nickel (ii)
SUBSTANCE: invention relates to a method of producing bis(3,6-di(tert-butyl)benzosemiquinolates-1,2) of cobalt (II) or manganese (II) or nickel (II), of general formula: M(SQ)2 , where: SQ is 3,6-di(tert-butyl)benzoquinolate-1,2, and M = Mn(II) or Co(II) or Ni(II). The method is characterised by that a disubstituted salt of an alkali metal salt and 3,6-di(tert-butyl) pyrocatechol-1,2 is obtained, followed by reaction thereof with 3,6-di(tert-butyl)benzoquinoline-1,2. The formed 3,6-di(tert-butyl)benzosemiquinolate-1,2 of the alkali metal reacts with a Co(II) or Mn(II) or Ni(II) halide in an inert atmosphere in tetrahydrofuran.
EFFECT: simple synthesis of bis-semiquinolates of metals.
4 cl, 5 ex
The invention relates to the production of spin-labeled bischelate metals of the first transition series, namely bis(3,6-di(tert-butyl)benzoimidazole-1,2) manganese(II), cobalt(II) and Nickel(II). The General formula of compounds, for which the claimed method of synthesis corresponds to M(SQ)2where SQ - 3,6-di(tert-butyl)benzoindole-1,2 and M=Mn(II) or Co(II), or Ni(II).
The structural formula of M(SQ)2below:
The compounds of this class can be used when creating heterospecific molecules with multiple paramagnetic centers, magnetoactive materials, namely photo - and thermoplasma spin switches, sensors near environment, the memory elements of the new type, as well as in organic synthesis.
Complexes of manganese(II) and Nickel(II) were previously synthesized by the reaction of CARBONYLS Mn2(CO)10and Ni(CO)4with 3,6-di(tert-butyl) - benzoquinone-1,2 in tetrahydrofuran (THF) under inert atmosphere (Inorg. Chem. 1998, 37, 3051; Izv. Acad. Of Sciences of the USSR, 1992, 2315, Inorg. Chem. 1992, 31, 3718). Compounds were extracted in the form of a solvate M(SQ)2(THF)2that was easily tsalala molecules of tetrahydrofuran THF during storage in air. A similar connection for cobalt to obtain by this method fails. Use in this reaction Co2(CO)8leads only to the formation of Tris[3,6-di(tert-butyl)benzo miminost-1,2]cobalt(III) (Co(SQ) 3) (Inorg. Chem. 1994, 33, 1276).
Used in the synthesis of the CARBONYLS of metals require special conditions when working with them, because they are volatile, toxic and can ignite upon contact with oxygen. In addition, they are unstable during storage and are quite expensive.
The invention solves the problem of creating a simple and economical method of obtaining bis(3,6-di(tert-butyl)benzoimidazole-1,2) cobalt(II) or manganese(II), or Nickel(II).
The proposed method of obtaining bis(3,6-di(tert-butyl)benzoimidazole-1,2) cobalt(II), manganese(II) and Nickel(II) lies in the interaction of halide Co(II), Mn(II) or Ni(II) with a solution of 3,6-di-tert-butylbenzothiazole-1,2 alkali metal in an inert atmosphere in tetrahydrofuran.
The proposed synthesis method was previously used to obtain Tris(3,5 - and 3,6-di(tert-butyl)benzoimidazole-1,2) transition metals III-VI group, and lanthanides (SU 527434, C07F 5/00, 05.09.1976).
It is proposed for use in obtaining bis(3,6-di(tert-butyl)benzoimidazole-1,2) transition metals VII-VIII groups. The method consists in the interaction of anhydrous halide Mn(II) or Co(II), or Ni(II) with a solution of 3,6-di(tert-butyl)benzoimidazole-1,2 alkali metal in tetrahydrofuran THF. The halide must be soluble in tetrahydrofuran THF, so for Mn(II) and Ni(II) possible use of bromide or iodide, and glaso(II) addition of bromide or iodide can also be used and chloride. The synthesis is carried out in an inert atmosphere at room temperature. This method allows to simplify the synthesis of the considered bis-semihydrate metals. In addition, it allows you to obtain the bis-chelate Co(SQ)2that it was not possible to allocate when using other synthesis methods.
The invention is illustrated by the following examples.
Example 1. Obtaining Co(SQ)2(THF)2.
All operations is carried out in an inert atmosphere. At room temperature 3,6-di(tert-butyl)benzoquinone-1,2 (Q) (0.50 g, 2.27 mmol) was dissolved in 15 ml of tetrahydrofuran (THF) and add an excess of metallic sodium. The mixture is stirred for ~5 h before formation of a light yellow solution of disubstituted salts of sodium and 3,6-di(tert-butyl)pyrocatechin-1,2. The resulting solution is filtered and added to it a solid Q (3,6-di(tert-butyl)benzoquinone-1,2) (0.50 g, 2.27 mmol). After dissolution of the added Q the solution becomes dark blue color is formed 3,6-di(tert-butyl)benzoimidazole-1,2 sodium. In the reaction mixture powder CoCl2(0.295 g, 2.27 mmol) and 25 ml THF. The mixture is stirred for 2 h, filtered and completely removed from the filtrate the solvent by a current of argon. The residue is treated with 15 ml F, the precipitate is filtered NaCl, added to the filtrate 35 ml of hexane and incubated the mixture at -18°C in a sealed flask for suto is. Formed small crystals of dark-blue color filtered off, washed with cold hexane, air-dried for 1 min (operations with segregated crystals can be performed in the air). Yield 78%.
Calculated for C36H56O6Co, %: C, 67.2; H, 8.8. Found, %: C, 67.0; H, 8.7.
For this complex is carried out x-ray analysis and identified the molecular and crystal structure.
Example 2. Obtaining Co(SQ)2(THF)2.
Similar to example 1. Differs in that it uses a powder of cobalt bromide CoBr2. Yield 71%.
Calculated for C36H56O6Co, %: C, 67.2; H, 8.8. Found, %: C, 67.1; H, 9.0.
Example 3. Obtain Ni(SQ)2(THF)2.
Ni(SQ)2(THF)2synthesized according to a similar method (example 1) of 0.50 g (2.27 mmol) NiBr2and 1 g (4.54 mmol) of 3,6-di(tert-butyl)benzoquinone-1,2. Yield 80%.
Calculated for C36H56O6Ni, %: C, 67.2; H, 8.8. Found, %: C, 66.9; H, 8.6.
Example 4. Obtain Ni(SQ)2(THF)2.
Similar to example 3. Characterized in that the alkali metal used potassium. Yield 74%.
Calculated for C36H56O6Ni, %: C, 67.2; H, 8.8. Found, %: C, 67.3, H 8.9.
Example 5. Obtain Mn(SQ)2(THF)2.
Mn(SQ)2(THF)2synthesized according to a similar method (example 1) of 0.50 g (2.27 mmol) MnBr2and 1 g (4.54 mmol) of 3,6-di(tert-butyl)benzoquinone-1,. Yield 67%.
Calculated for C36H56O6Mn, %: C, 67.6; H, 8.8. Found, %: C, 67.4; H, 8.7.
1. The method of obtaining bis(3,6-di(tert-butyl)benzoimidazole-1,2) cobalt(II)or manganese(II), or Nickel(II) General formula: M(SQ)2
where SQ - 3,6-di(tert-butyl)benzoindole-1,2 and M=Mn(II)or Co(II), or Ni(II), characterized in that the first stage receive duhsasana salt of an alkali metal and 3,6-di(tert-butyl)pyrocatechin-1,2, followed by its interaction with 3,6-di(tert-butyl) - benzoquinone-1,2 formed 3,6-di(tert-butyl)benzoimidazole-1,2 alkali metal is introduced into reaction with the halide(II)or Mn(II), or Ni(II) in an inert atmosphere in tetrahydrofuran.
2. The method according to claim 1, wherein the process is conducted at room temperature.
3. The method according to claim 1, characterized in that as halides Mn(II) or Ni(II) can be used bromide or iodide, and for Co(II) can also be used and chloride.
4. The method according to claim 1, characterized in that the alkali metal can be used sodium, potassium.
FIELD: information technology.
SUBSTANCE: article with an image includes a substrate having a masked or concealed protective image on at least part thereof, which reflects less than 50% of radiation at wavelength 800-900 nm. The protective image contains an infrared radiation absorbing compound selected from:
or salt or polymer thereof, where M is a metal selected from iron, cobalt, nickel, aluminium, scandium, chromium, vanadium, titanium, manganese and lanthanide. R1 is selected from hydrogen, phosphonate, sulphonate, nitro, halogen, cyano, thiocyano, thioalkyl, thioaryl, alkyl, alkoxy, aryl, aryloxy, amine, substituted amines and substituted aryl. One of R2 and R3 is oxygen and the other is NO; n is a number corresponding to half the coordination number of metal M; each of L and L' independently denotes a ligand which forms a complex with metal M, and y is a number which corresponds to the coordination number of metal M. The infrared radiation absorbing compound does not form an intensely coloured protective image, and the protective image is pale, colourless or tinted. The invention also discloses a method of making the article with the image, using the compound and a method of authenticating the said article.
EFFECT: obtaining a protective image which can reflect less than half the light at 800-900 nm, and a protective image which is not intensely coloured.
14 cl, 35 ex, 4 tbl
SUBSTANCE: invention relates to novel derivatives of 1-allylimidazole with metal salts , where R denotes allyl, E denotes a metal, e.g. Zn (II) or Co (II), An denotes chlorine or acetate, n equals 2.
EFFECT: novel 1-allylimidazole derivatives having antihypoxic activity are obtained.
1 cl, 7 tbl, 2 ex
SUBSTANCE: described is a novel compound - 1-acetyl-5,10-dioxy-5,10-dihydro-2H-anthra[2,3-D][1,2,3]triazole-7,8-dicarboxylic acid of formula , which can be used as a starting compound in synthesis of metal complexes of tetra[4,5]([6,7]1-acetyl-2H-naphtho[2,3-D][1,2,3]triazole-5,8-dione)phthalocyanine.
EFFECT: possibility of use as dyes or catalysts.
1 cl, 3 ex, 4 dwg, 1 dwg
SUBSTANCE: invention relates to tetra[4,5]([6,7]1-acetyl-2H-naphtho[2,3-D][1,2,3]triazole-5,8-dione)phthalocyanines of copper and cobalt of formula , where M denotes Cu and Co.
EFFECT: invention enables to obtain novel derivatives of phthalocyanines which can be used as dyes, as well as catalysts for various processes.
2 ex, 6 dwg
SUBSTANCE: invention relates to tetra-(5-acetylamino-7-heptyloxy)anthraquinonoporphyrazines of copper and cobalt of formula .
EFFECT: obtained compounds can be used as dyes and catalysts.
4 ex, 5 dwg,
SUBSTANCE: invention relates to tetra-(5-acetylamino-7-hydroxy)anthraquinonoporphyrazines of copper and cobalt of formula
EFFECT: compounds can be used as dyes and catalysts.
4 ex, 6 dwg
FIELD: chemistry of metalloorganic compounds, chemical technology.
SUBSTANCE: invention relates to an improved method for synthesis of octa-4,5-carboxyphthalocyanine cobalt sodium salt, or 2,3,9,10,16,17,23,24-octacarboxylic acid of phthalocyanine cobalt (terephthal) of the formula (I) . Terephthal is a synthetic preparation used in catalytic ("dark") therapy of cancer based on generation of oxygen reactive species in tumor directly by chemical manner and in combination with ascorbic acid being without using the physical effect. Method for preparing octa-4,5-carboxyphthalocyanine cobalt sodium salt involves melting pyromellitic acid dianhydride with cobalt salt in the presence of urea followed by alkaline hydrolysis of prepared octa-4,5-carboxyphthalcyanine cobalt tetraimide. Salt formed after hydrolysis is purified from impurities, in particularly, from oligomeric compounds by column chromatography method on aluminum oxide, following precipitation of octacarboxylic acid, its, its washing out, concentrating and purifying from residual inorganic salts by washing out with distilled water and by neutralization with sodium hydroxide aqueous solution also, treatment with apyrogenic activated carbon, filtration and drying the end substance. Purification of octa-4,5-carboxyphthalocyanine cobalt from residual inorganic salt is carried out preferably by electrodialysis method after its partial neutralization to pH 5.2-5.5 at current density 0.15-0.25 A/dm2, temperature 20-35°C and the concentration 1.5-3.0% followed by complete neutralization to pH 8.7, treatment of obtained octacarboxy-PcCo salt solution with activated carbon, filtration and drying filtrate in a spray drier. Proposed method provides preparing octa-4,5-carbocyphthalocyanine cobalt salt of high purity degree and free of oligomeric compounds and residual chlorides.
EFFECT: improved method of synthesis.
FIELD: chemical technology.
SUBSTANCE: invention relates to a method for synthesis of platinum metal salts, in particular, palladium salts, namely, palladium (II) acetate. Method for synthesis of palladium (II) acetate involves dissolving metallic palladium in concentrated nitric acid, filtering and evaporation of palladium nitrate solution, its treatment with glacial acetic acid, filtration of formed sediment and its treatment with acetic acid ethyl ester and glacial acetic acid for its conversion to palladium (II) acetate followed by heating the prepared suspension for 6 h. Method provides preparing palladium (II) acetate with high yield in monophase state and without impurities of insoluble polymeric palladium (II) acetate.
EFFECT: improved method of synthesis.
3 cl, 2 tbl, 21 ex
FIELD: organic chemistry of complex compounds.
SUBSTANCE: invention relates to novel derivatives of metalloporphyrazine of the formula (I) that can be used as dyes, catalysts in different processes. Invention provides preparing compounds possessing with coloring properties.
EFFECT: valuable properties of complexes.
5 dwg, 4 ex
FIELD: organic chemistry.
SUBSTANCE: invention relates to new derivatives of metalloporphyrazine of the formula (I): . These compounds can be used as dyes, catalysts in different processes and the material in sensitive members of gas transducers. Invention provides synthesis of compounds showing dyeing properties.
EFFECT: valuable properties of compounds.
5 dwg, 4 ex
SUBSTANCE: in the compound of formula I, M denotes identical or different metal atoms selected from a group comprising: Pd, Fe, Mn, Co, Ni, Cu, Zn or Mo, R1 and R2 independently denote hydrogen, amino, hydroxyl, carboxy, cyano, C1-12alkyl, C2-12alkenyl, C2-12alkynyl, C1-12alkoxy, C1-12alkylamino, C1-12alkoxycarbonyl, C1-12alkylamido,arylamido. Alkyl groups in the said substitutes may in turn be substituted with one or more of the following groups: hydroxyl, oxo, carboxy, amino or amido, R3-R10 independently denote hydrogen, or NHR3R4 and NHR5R6, taken together, and(or) NHR7R8 and NHR9R10, taken together, denote a ligand (or ligands) containing one or more donor aliphatic or aromatic nitrogen atoms and which occupy the cis-position near metal (M) atoms. The invention also discloses a pharmaceutical composition, use of the compound to prepare a medicinal drug and a therapeutic treatment method.
EFFECT: obtaining compounds capable of boosting efficiency of medicinal drugs.
25 cl, 17 ex, 23 tbl
SUBSTANCE: invention relates to a radiopharmaceutical agent for diagnosing or treating (therapy) skeletal bone injury, containing a complex of zoledronic acid with 99mtechnetium or 188rhenium isotopes, zoledronic acid, tin halide or possibly an antioxidant - ascorbic or gentisic acid. The invention also relates to a method of preparing said radiopharmaceutical agent, involving mixing a lyophilisate, obtained by mixing a zoledronic acid solution and a solution of tin dichloride in hydrochloric acid in an inert gas atmosphere and adding a metal hydroxide, with a salt of a metal from the group of isotopes and a radionuclide solution.
EFFECT: more effective use of the compounds.
4 cl, 2 ex, 14 tbl
SUBSTANCE: method involves reacting triethanol ammonium salts of o-cresoxyacetic and p-chloro-o-cresoxyacetic acid with the corresponding metal salt in alcohol or aqueous medium preferably at room temperature for 1-48 hours. The three-component complexes are extracted through solvent distillation with subsequent washing of the formed powder with ether and drying in a vacuum. The said complexes can be used as a base for making medicinal drugs.
EFFECT: design of a method of preparing complexes of o-cresoxy- and p-chloro-o-cresoxyacetic acid, triethanolamine and metals having formula n[R(o-CH3)-C6H3-OCH2COO-•N+H(CH2CH2OH)3]•MXm, where R = H, p-Cl; M = Mg, Ca, Mn, Co, Ni, Cu, Zn, Rh, Ag; X = CI, NO3, CH3COO; n = 1, 2; m = 1-3.
2 cl, 11 ex
SUBSTANCE: invention relates to method of producing manganese (II) alcoholates which can be used in different syntheses, in purification of complex multicomponent mixtures from alcohols, in analytical control and in scientific research. The method involves direct reaction of metal with alcohol in a vertical bead mill. The liquid phase used is the corresponding alcohol taken in mass ratio to glass beads of 1:1.5. Manganese is taken in amount of 5.81-43.3 % of the mass of the liquid phase. The process is initiated at room temperature and is carried out while controlling by taking samples and determination of content of manganese (II) compounds until all the loaded metal is virtually exhausted, after which stirring in the glass bead is stopped. The suspension of the reaction mixture is separated from the glass beads and taken for filtering. The alcoholate residue is washed with a liquid phase solvent and taken for purification by recrystallisation, and the filtrate and washing liquid phase with traces of dissolved alcoholate are returned for a repeated process. As a rule, the alcohol used is C1-C5-alcohol with normal and isomeric structure, cyclohexanol, ethyl cellosolve and ethylene glycol.
EFFECT: method allows for reaction of manganese with alcohol in conditions where the reaction could have been quantitatively insufficient with respect to the reagent, could have taken place at technically acceptable rates and led to accumulation the main mass of the product in solid phase, which can be easily separated by simple filtering.
2 cl, 2 tbl, 18 ex
SUBSTANCE: new pure syn-aminoacids of formulas I and II have ability of specific binding in biological system and may be used to produce image of tumor. II and I. In formulae I and II Y and Z are independently selected from group made of CH2 and (CR4R5)n, n=1, 2; R1-R3 are independently selected from group made of H and alkyl C1-C4; R4, R5 = H and R7 = 18F. Invention is related to method of synthesis of syn-aminoacids with formula II, which includes stages of ketone transformation into trans-spirit of formula I and transformation of produced trans-spirit into syn-aminoacid of formula II, and also to pharmaceutical composition for production of tumor image and method for production of tumor image.
EFFECT: improved efficiency of compounds and method of treatment.
12 cl, 1 tbl, 3 dwg, 3 ex
SUBSTANCE: method of synthesis of manganese (II) fumarate through direct reaction of metal with acid is presented. The process is carried out in a vertical type bead mill with mass ratio of beads to the reaction mixture equal to 1:1, and the liquid phase is a solution of fumaric acid in an organic solvent with content of acid of 0.70-1.80 mol/kg. Manganese is taken in stoichiometric amount with acid or in deficiency of up to 5%. The process is started by loading the liquid phase solvent and acid and preparation of the acid solution in a bead mill, after which metal is loaded and the process is carried out at temperature ranging from 25 to 35°C while preventing spontaneous increase of temperature through forced cooling and controlling through sample taking and determination of manganese salt in the samples and residual amount of acid until attaining values close to calculated values during quantitative conversion of the reagent in deficiency. After that stirring and cooling are stopped. The suspension of the reaction mixture is separated from the glass beads, cooled to temperature between 5.2 and 6.2°C and filtered. The filtering residue is washed with the liquid phase solvent, cooled to approximately the same temperature, and taken for purification by recrystallisation. The filtrate and the washing solvent are returned to the repeated process.
EFFECT: method is easy to implement, the end product can be easily separated and there are no auxiliary materials which contaminate the obtained product.
2 cl, 11 ex
SUBSTANCE: invention relates to an improved method of producing manganese (II) fumarate from manganese metal and its oxide (III) through direct reaction of the metal and its oxide Mn2O3 with an acid in the presence of a liquid phase and a stimulating iodine additive in a vertical type bead mill with glass beads as grinding agent. The metal and its oxide are loaded in molar ratio (2±0.1):1 in total amount of 7.87 to 10.93% of the mass of the load. Acid is added with 15 to 25% excess of the calculated value, equal to the number of moles of metal and twice the number of moles of metal oxide in the load. The base of the liquid phase is isoamyl alcohol, in which the iodine stimulating additive is dissolved in amount of 0.02 to 0.05 mol/kg. Glass beads are loaded first, in mass ratio to the reaction mixture of 1.35:1, and then later the liquid phase solvent, acid and stimulating additive, and after brief stirring, metal oxide and metal, stirring all the while. Taking this moment as the beginning of the process, forced cooling is introduced right away. Operating temperature is stabilised in the range 33 to 45°C and in this mode, the process is carried out until virtually quantitative conversion of metal and its oxide to the target salt, after which stirring and forced cooling are stopped. The reaction mixture is separated from the glass beads, cooled to temperature 5 to 6°C and kept at that temperature for 1 to 2 hours. The solid phase of the target salt is filtered off and washed with isoamyl on a filter cooled to approximately the same temperature, after which it is taken for purification by recrystallisation. The filtrate and the cleaning solvent, containing excess acid, the bulk of the stimulating additive and a certain amount of dissolved target salt, are returned for loading in the repeated process. The process is carried out in light temperature conditions. The target substance can be easily separated.
EFFECT: design of a low-waste method, which allows for obtaining target product from available manganese oxide with an easy to implement process.
SUBSTANCE: invention refers to chelating agents and their technetium complexes to be used as radiopharmaceuticals and characterised by formula I where X is -NR-, -CO2-, -CO-, -NR(C=S)-, -NR(C=O)-, -CONR- or Q; Y represents amino acid, -CH2-, -CH2OCH2-, -OCH2CH2O- or X; Z is an aggregation from peptides, their analogues, substrata, antagonists or enzyme inhibitors, receptor-bonding compounds, oligonucleotides, oligo-DNA- or oligo-RNA-fragments; n is a number 1 to 8; m is a number 0 to 30; R represents H, C1-4alkyl, C2-4alkoxyalkyl, C1-4hydroxyalkyl or C1-4fluoroalkyl; Q represents remains of succinimide , A is a pharmaceutically acceptable anion.
EFFECT: production of new chelating agents applicable for making the technetium complexes.
22 cl, 12 ex, 3 dwg, 2 tbl
SUBSTANCE: invention is related to improved method for preparation of manganese oxalate (II) by means of direct interaction of metal with acid in bead mill in presence of liquid phase, in which manganese and oxalic acid are loaded into bead mill in stoichiometric ratio in amount of 0.75-2.4 mole/kg of load at mass ratio of load and glass beads of 1:1.2, liquid phase dissolvent used is water or organic substance, or mixture of organic substances; loading is carried out in the following sequence: liquid phase dissolvent, acid, then metal; process is started at room temperature and is carried out under conditions of forced cooling in the temperature range of 18-39°C with control over procedure by sampling method to practically complete spend of loaded reagents for product making, afterwards mixing and cooling are terminated, suspension of reaction mixture is separated from glass beads and filtered, salt deposit is sent for product cleaning from traces of non-reacted metal, and filtrate is returned into repeated process.
EFFECT: method makes it possible to produce target product in absence of manganese dioxide and stimulating additive at temperatures close to room temperature.
2 cl, 13 ex, 2 tbl
FIELD: chemical industry; methods of production of the manganese salts with the organic acids.
SUBSTANCE: the invention is pertaining to production of the manganese salts with the organic acids in particular, to the salt of the divalent manganese and formic acid. The method is exercised by interaction of manganese, its oxides in the state of the highest valence with the formic acid solution in the organic solvent in the presence of iodine as the stimulating additive. The production process is conducted in the bead grinder of the vertical type having the revertive cooler-condenser, the high-speed paddle stirrer and the glass beads of in the capacity of the grinding agent loaded in the mass ratio to the loading of the liquid phase as (1÷2): 1. The liquid phase consists of the formic acid solution in the organic solvent. The concentration of the acid is taken within the range of 3.5÷10.8 mole/kg. In the loaded liquid phase they dissolve the stimulating additive of iodine in the amount of 0.025-0.100 mole/kg of the liquid phase. The ratio of the masses of the liquid phase and the total of the metallic manganese and the manganese oxide are as(4.9÷11):1. The molar ratio of the metal and the oxide in the loading is as (1.8÷2.,2):1. The metal and the oxide are loaded the last. It is preferable in the capacity of the dissolvent to use the butyl alcohol, ethyl acetate, ethylene glycol, 1.4-dioxane, dimethyl formamide. The production process is started and conducted at the indoor temperature up to practically complete(consumption of the whole loaded manganese oxide. Then the stirring is stopped, the suspension of the salt is separated from the beads and the nonreacted manganese and after that conduct filtration. The filtrate and the nonreacted manganese are returned into the repeated production process, and the filtered out settling of the manganese salt is exposed to purification by recrystallization. The technical result of the invention is - simplification of the method at usage of accessible reactants.
EFFECT: the invention ensures simplification of the method at usage of accessible reactants.
16 ex, 2 tbl
FIELD: process engineering.
SUBSTANCE: invention relates to petrochemical and chemical industries, particularly, to production of methane conversion catalyst, method of its production and method of converting methane into aromatic hydrocarbons in nonoxidising conditions. Zeolite catalyst comprises molybdenum in amount of not over 4.0 % by wt as modifying element, carbamide as structure-forming additive, and nano-sized silver powder as second modifying element, said silver powder produced by conductor electrical blasting, at concentration varying from 0.1 to 2.0 wt %. Proposed method allows producing catalyst by dry mixing of zeolite modified by molybdenum with molybdenum content not exceeding 4.0 wt % with second promoting agent, i.e. nano-sized silver powder with its content in produced catalyst varying from 0.1 to 2.0 wt %. Method of methane nonoxidising conversion is performed in the presence of above described catalyst.
EFFECT: higher degree of methane conversion and yield of aromatic hydrocarbons along with catalyst longer life.
3 cl, 1 tbl, 8 ex