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Preparation of hydrogenation catalyst

A hydrogenation catalyst and catalyst technology, applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc. Problems such as the accumulation degree of active components and the difficulty of vulcanization of active components can achieve the effects of reducing the amount of metal active components, avoiding agglomeration, and reducing the size

Inactive Publication Date: 2008-11-05
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it has been reported that increasing the degree of dispersion by strengthening the interaction between the active component and the carrier will reduce the accumulation degree of the active component. The reaction makes the active component loaded on the carrier, which can make the active component form very small grains and have good contact with the carrier surface, and distribute evenly, thereby bringing high dispersion (N.Spanos et al., Journal of Catalysis, 1990, 124: 301; L. Karakonstantis et al., Journal of Catalysis, 1996, 162: 306; J. Vakros et al., J. Phys. Chem. B, 2003, 107: 804; C. Korduliset al., Applied Catalysis A: General, 2001, 209: 85.), but the enhancement of the interaction between the active component and the carrier will make it difficult for the active component to vulcanize completely, and it is easy to form type I sulfide activity with low activity and low accumulation degree phase, unfavorable for the removal of sterically hindered sulfides and aromatics

Method used

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  • Preparation of hydrogenation catalyst
  • Preparation of hydrogenation catalyst
  • Preparation of hydrogenation catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Weigh 20-40 mesh γ-Al 2 o 3 Put 5g of carrier into a 100ml autoclave, add 0.1mol / l sodium tungstate solution 47.77ml, then add 2.4mol / l hydrochloric acid 3.98ml, stir evenly, add surfactant CTAB 0.8706g (molar ratio WO 4 2- : CTAB=1:0.5), heated up to 150°C, stirred for 24 hours, cooled to room temperature, filtered the suspension, washed with water, dried at 110°C for 2 hours, and calcined at 550°C for 4 hours to obtain W / Al 2 o 3 ;W / Al 2 o 3 Put it into the autoclave again, add 33.50ml of 0.06mol / l nickel nitrate solution, stir, add 0.2415g of urea, stir and react at 90°C for 8 hours, then raise the temperature to 137°C and stir for 4 hours, cool to room temperature, and suspend Liquid filtration, washing with water, drying at 110°C for 2 hours, and calcining at 550°C for 4 hours to obtain NiW / Al 2 o 3 Hydrofining catalyst S1, the contents of nickel and tungsten oxides in the catalyst are listed in Table 1, and the contents of nickel and tungsten were measured ...

Embodiment 2

[0032] Weigh 20-40 mesh γ-Al 2 o 3 Put 5g of carrier into a 100ml autoclave, add 52.13ml of 0.1mol / l sodium tungstate solution, then add 4.34ml of 2.4mol / l hydrochloric acid, stir evenly, add surfactant CTAB 0.95g (molar ratio WO 4 2- : CTAB=1:0.5), heated up to 150°C, stirred for 24 hours, cooled to room temperature, filtered the suspension, washed with water, dried at 110°C for 2 hours, and calcined at 550°C for 4 hours to obtain W / Al 2 o 3 ;W / Al 2 o 3 Put it into the autoclave again, add 34.06ml of 0.06mol / l nickel nitrate solution, stir, add 0.2455g of urea, stir and react at 90°C for 8 hours, then raise the temperature to 137°C and stir for 4 hours, cool to room temperature, and suspend Liquid filtration, washing with water, drying at 110°C for 2 hours, and calcining at 550°C for 4 hours to obtain NiW / Al 2 o 3 Hydrofining catalyst S2, the contents of nickel and tungsten oxides in the catalyst are listed in Table 1.

Embodiment 3

[0034] Weigh 20-40 mesh γ-Al 2 o 3 Put 5g of carrier into a 100ml autoclave, add 30.5ml of 0.1mol / l sodium tungstate solution, then add 2.54ml of 2.4mol / l hydrochloric acid, stir evenly, add surfactant CTAB 0.5552g (molar ratio WO 4 2- : CTAB=1:0.5), heated up to 150°C, stirred and reacted for 24 hours, took out the autoclave and cooled to room temperature, filtered the suspension, washed with water, dried the obtained solid product at 110°C for 2 hours, and roasted at 550°C for 4 hours to obtain W / Al 2 o 3 ;W / Al 2 o 3 Put it into the autoclave again, add 19.31ml of 0.06mol / l nickel nitrate solution, stir, add 0.1391g of urea, seal and stir at 90°C for 8 hours, then raise the temperature to 137°C and stir for 4 hours, cool to room temperature, The suspension was filtered, washed with water, dried at 110°C for 2 hours, and calcined at 550°C for 4 hours to obtain NiW / Al 2 o 3 Hydrofining catalyst S3, the contents of nickel and tungsten oxides in the catalyst are listed i...

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Abstract

The invention provides a method for preparing a hydrogenation catalyst with high activation. A disposition method is adopted to carry out step-by-step loading to the active components of the metals of VIB and VIII families; the VIB metal comprises tungsten or molybdenum, while the VIII metal comprises nickel or cobalt; a carrier is alumina. The loading of VIB metal takes a corresponding soluble salt as raw material, an acid solution as a precipitator and a cationic surface active agent as a dispersant. In a hydrothermal condition, the corresponding soluble salt, the acid solution and the cationic surface active agent produce metallic oxide particles by a liquid deposition reaction; the loading of VIII metal also takes a corresponding soluble salt as raw material and carbamide as a precipitator; the adding of the precipitator and the generation of precipitation are separated by controlling reaction temperature in sections and even precipitation is realized to disperse the particles of the active components on the carrier evenly. The hydrogenation catalyst prepared shows good effects in the respects of desulfurization and denitrification activation and can greatly reduce the usage of the active components.

Description

technical field [0001] The invention belongs to the technical field of preparation of hydrorefining catalysts, and in particular relates to a method for preparing a hydrogenation catalyst capable of realizing higher desulfurization and denitrogenation activities. Background technique [0002] The increasingly stringent quality standards for oil products place higher demands on the desulfurization activity of the hydrofining catalysts used. The supported catalyst with Group VIB metal W or Mo as the main agent, Group VIII metal Ni or Co as the auxiliary agent, and alumina as the carrier is currently the most widely used hydrofining catalyst. In addition to continuous research and exploration on the selection of active components and supports, trying to improve the dispersion of active components in the catalyst is also one of the effective ways to improve the activity of the catalyst, because the preparation method and preparation conditions have great influence on the dispers...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/888C10G45/08
Inventor 鲍晓军范煜王豪石冈刘海燕白跃华兰玲
Owner BC P INC CHINA NAT PETROLEUM CORP
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