Carbon compounds (B01J27/20)

ethod for production of lanthanum organometallic frame compound of three-dimensional structures based on terephthalic acid // 2613976
FIELD: chemistry.SUBSTANCE: invention relates to the preparation of organometallic lanthanum frame compound of the formula La2(VDS)3(H2O)4 of a three-dimensional structure based on terephthalic acid, which can be used as a catalyst for various processes, including photocatalyst. The method for lanthanum organometallic frame compound preparation comprises terephthalic acid reaction with lanthanum nitrate for 8-9 hours at a temperature of 150-155°C in a solvent represented by dimethylformamide, reaction mixture coolong down to the room temperature, filtration of the resulting solid, successive washing of the solid phase by dimethylformamide and ethanol and drying at a temperature of 140-160°C.EFFECT: simplified synthesis conditions, increased process efficiency and increased yield.1 dwg, 1 tbl, 2 ex

Composite material c/al2o3 and method of its obtaining // 2552634
FIELD: chemistry.SUBSTANCE: uniform, continuous and dense layer of pyrolytic carbon has width of carbon coating, close to monolayer coating, equal 0.4-0.5 nm, density of precipitated carbon coating, equal ρC = 2.0-2.1 g/cm3, specific surface SBET = 90-200 m2/g, cumulative volume of pores ΣVpore≤0.4 cm3/g, average size of pores DBET≤10 nm, most probable size of pores DBJH = 5-7 nm with absence of micro pores. Invention also relates to method of production of such mesoporous composite material.EFFECT: claimed mesoporous composite material has high-quality thin carbon coating, which totally and uniformly covers external surface and walls of pores of said material.4 cl, 3 dwg, 3 tbl, 10 ex
Catalyst for hydrofining hydrocarbon material, hydrofining catalyst support, method of making support, method of making catalyst and method of hydrofining hydrocarbon material // 2478428
FIELD: chemistry.SUBSTANCE: invention relates to hydrofining catalysts, methods of making said catalysts, catalyst supports, methods of making supports and methods of obtaining petroleum products with low content of sulphur. Described is a catalyst which contains the following, wt %: Mo - 8.0-15.0; Co or Ni - 2.0-5.0; S - 5.0-15.0; C - 0.2-8.0; Ti - 0.3-4.1; B - 0.2-2.2; Al2O3 -the balance and a support which contains the following, wt %: TiO2 - 1.0-10.0; B2O3 - 1.0-10.0; Al2O3 - the balance, and having specific surface area of 150-300 m2/g, pore volume of 0.5-0.95 cm3/g and average pore diameter of 7-22 nm, and which is in form of particles with a cross-section in form of a three-leafed figure with diameter of the circumscribed circle of 1.0-1.6 mm and length of up to 20 mm. The support is obtained by moulding a paste, which is obtained by mixing aluminium hydroxide powder AlOOH, at least one powder of titanium dioxide, at least one boron compound, water and a peptising additive at pressure of up to 10 MPa, followed by drying and calcination at temperature of up to 600°C. The catalyst is prepared by saturating a support with an aqueous solution containing molybdenum and cobalt or nickel in form of complexes, for example, [M(H2O)x(L)y]2[Mo4O11(C6H5O7)2], where: M=Co2+ and/or Ni2+; L is a partially deprotonated form of citric acid C6H6O7 or ammonia NH3, x=0 or 2; y=0, 1 or 2; and at least one oxygen-containing organic compound, dried and sulphided. Hydrofining of hydrocarbon material is carried out in the presence of the catalyst described above at temperature of 320-400°C, pressure of 0.5-10 MPa, mass flow rate of material of 0.5-5 h-1, volume ratio hydrogen/material equal to 100-1000 m3/m3.EFFECT: obtaining a catalyst having maximum activity in target reactions occurring when hydrofining hydrocarbon material.20 cl, 9 ex, 1 tbl
Catalyst, method of producing support, method of producing catalyst and method of hydrofining hydrocarbon material // 2472585
FIELD: chemistry.SUBSTANCE: invention relates to catalysts for producing petroleum cuts with low sulphur content, methods of producing such catalysts and methods of producing supports for these catalysts. Described is a catalyst, having pore volume of 0.3-0.7 cm3/g, specific surface area of 170-300 m2/g, mean pore diameter of 7-22 nm and containing the following, wt %: Mo - 8.0-15.0; Co and/or Ni - 2.0-5.0; S - 5.0-15.0; B - 0.5-2.0; C - 0.5-7.0; Al2O3 - the balance. A support containing the following, wt %, is prepared first: B - 0.7-3.0; Al2O3 - the balance; having specific surface area of 170-300 m2/g, pore volume of 0.5-0.95 cm3/g and mean pore diameter of 7-22 nm, which are particles with a tri-lobe shaped section with diameter of 1.0-1.6 mm and length of up to 20 mm, having strength of 2.0-2.5 kg/mm. The support is obtained by moulding a paste which is obtained by mixing AlOOH powder with a boehmite with water, nitric acid or acetic acid, a boron compound and at least one oxygen-containing organic compound, through a tri-lobe shaped draw plate at pressure of up to 10 MPa, followed by drying and calcination at temperature of up to 600°C. The catalyst is prepared by soaking a boron-containing support with aqueous solution of a bimetallic complex [M(H2O)x(L)y]2[Mo4O11(C6H5O7)2], where: M=Co and/or Ni2+; L is a partially deprotonated form of citric acid C6H6O7; x=0 or 2; y=0 or 1; and at least one oxygen-containing organic compound, dried and sulphided.EFFECT: obtaining a catalyst having maximum activity in target reactions occurring when hydrofining hydrocarbon material.14 cl, 7 ex, 1 tbl

Titanium dioxide based carbonaceous photocatalyst, method of preparing said photocatalyst and use (versions) // 2380318
FIELD: chemistry.SUBSTANCE: invention can be used in chemical, construction and other industries. A titanium dioxide based carbonaceous photocatalyst is proposed, having more efficient light absorption in the λ≥400 nm range compared to pure titanium dioxide, and characterised at temperature 5 K by electron paramagnetic resonance (EPR) spectrum with only one intense signal in the interval of values of g from 1.97 to 2.05, as well as by an X-ray photoelectron spectrum in which the intense absorption band for bond energy of 285.6 eV relates to the Ols band at 530 eV. To prepare such a photocatalyst, a titanium compound with BET specific surface area of at least 50 m2/g is thoroughly mixed with carbonaceous substance and the mixture is thermally treated at temperature not above 400°C. Carbon content in the photocatalyst ranges from 0.05 to 4 wt %.EFFECT: more efficient production of photocalyst which is active in daylight, and improved optical properties of the photocalyst.31 cl, 11 dwg, 9 ex
 
2551080.
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