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High-specific surface area mesoporous nickel oxide hydrogenation catalyst and preparation method thereof

A high specific surface area, hydrogenation catalyst technology, applied in the direction of metal/metal oxide/metal hydroxide catalyst, physical/chemical process catalyst, catalyst carrier, etc., can solve the problems of pore volume reduction, catalyst specific surface area reduction, etc., Achieve the effect of improving activity and stability and increasing diffusion

Active Publication Date: 2012-12-19
BC P INC CHINA NAT PETROLEUM CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In order to solve the deficiencies in the background technology, the present invention provides a high specific surface area mesoporous nickel oxide hydrogenation catalyst and its preparation method. Hydrogen catalyst, when the nickel content in the catalyst is high, the problem of the reduction of the specific surface area of ​​the catalyst and the reduction of the pore volume; the hydrogenation activity of the catalyst of the present invention is high, the raw material adaptability is strong, and the operation stability is good

Method used

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  • High-specific surface area mesoporous nickel oxide hydrogenation catalyst and preparation method thereof
  • High-specific surface area mesoporous nickel oxide hydrogenation catalyst and preparation method thereof

Examples

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Embodiment 1

[0041] High specific surface area, mesoporous nickel oxide is based on the molar ratio of absolute ethanol, benzene, Ni, P123, tetrakis [3-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentapentyl alcohol ester is 1 / 0.13 / 1.1 / 0.001 / 0.01 ratio, prepared by sol-gel method.

[0042] (1) Dissolve P123 (molecular weight: 5800) in a mixed solution of absolute ethanol and benzene at room temperature, and stir until completely dissolved;

[0043] (2) Add tetrakis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate]pentaerythyl alcohol ester into the solution of (1) under stirring condition, and stir until dissolved;

[0044] (3) the anhydrous NiCl 2 Add to (2) solution, stir for 0.5h, put the obtained sol in an open crucible, and age in a constant temperature water bath at 40°C for 24h;

[0045] (4) Put the aged gel into a muffle furnace and bake at 350°C for 4 hours to prepare mesoporous nickel oxide with high specific surface area. The nickel oxide used in the following examples all...

Embodiment 2

[0048] Take 4.0g of concentrated nitric acid, 2.7g of citric acid, 62g of nickel nitrate, and 70g of deionized water to prepare a solution, then add small-pore alumina dry powder (pore volume: 0.3-0.5ml / g, specific surface area: 230-360m 2 / g of aluminum hydroxide dry powder) 100g to make a sol. Take 14.5g of nickel oxide and 1.8g of powder and mix them thoroughly, then knead them with the prepared sol to form a plastic paste, extrude into a rod, dry at 110°C for 3 hours, and roast at 450°C for 3 hours to make catalyst R1. Its main physicochemical properties are listed in Table 1.

Embodiment 3

[0050] Take 4.0g of concentrated nitric acid, 2.7g of citric acid, 54.0g of nickel nitrate, and 70g of deionized water to form a solution, then add small-pore alumina dry powder (pore volume: 0.3-0.5ml / g, specific surface area: 230-360m 2 / g of aluminum hydroxide dry powder) 100g to make a sol. Take 24.0g of nickel oxide and 1.8g of powder and mix them thoroughly, then knead them with the prepared sol to form a plastic paste, extrude, dry at 110°C for 3 hours, and roast at 450°C for 3 hours to make catalyst R2. Its main physicochemical properties are listed in Table 1.

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Abstract

The invention discloses a high-specific surface area mesoporous nickel oxide hydrogenation catalyst and a preparation method of the high-specific surface area mesoporous nickel oxide hydrogenation catalyst. The preparation method of the catalyst comprises the following steps of: taking high-specific surface area mesoporous nickel oxide as a carrier and active metal, taking sol prepared by peptizing agent and metallic nickel inorganic salt as binder, kneading in a mixing way, forming by means of strip squeezing, drying and roasting, so that the catalyst can be prepared. The high-specific surface area mesoporous nickel oxide carrier used in the catalyst disclosed by the invention takes nickel salt as a nickel source, non-ionic surface active agent as structure-directing agent, and organic matter having the function of solubilization as auxiliary pore-forming agent, and is prepared by a sol-gel method. According to the catalyst disclosed by the invention, the problems that the nickel hydrogenation catalyst is prepared by taking nickel oxide and aluminum oxide as carriers, the specific surface area of the catalyst is reduced, and the pore volume is lowered when the nickel content is higher in the catalyst in the prior art can be solved; and the catalyst is high in hydrogenation activity, high in raw material adaptability, and good in running stability.

Description

technical field [0001] The invention relates to a catalyst for hydrogenation reaction process, such as hydrogenation reaction of aromatic hydrocarbons and solvent oil hydrogenation, which is used for producing environment-friendly solvent oil, and belongs to the technical field of catalysts, in particular to a high specific surface area mesoporous Nickel oxide hydrogenation catalyst and its preparation method. Background technique [0002] Solvent oil is one of the five major categories of petroleum products, widely used in textile printing and dyeing, vegetable oil extraction, paint, cosmetics, aluminum foil rolling, printing, pesticides and other industries. With the development of my country's national economy and the improvement of people's living standards, the quality standards of solvent oil are gradually developing in the direction of low sulfur and low aromatics. [0003] Solvent oil mainly uses catalytic reforming raffinate, oil field stable light hydrocarbons and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/755B01J32/00B01J35/10C10G45/06
Inventor 于振兴郑伟付红英张宇航吴虹王成刚李宏宇徐文龙张平范雪蕾付群张晓丽
Owner BC P INC CHINA NAT PETROLEUM CORP
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