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Catalyst and its preparing process and usage method and use

A technology of hydrogenation reaction and catalyst, which is applied in the direction of metal/metal oxide/metal hydroxide catalyst, chemical instruments and methods, and selective hydrogenation refining, which can solve the problems of short operation period, poor stability, and high cost , to achieve the effects of lower production costs, excellent hydrogenation performance, and huge market potential

Active Publication Date: 2008-05-28
兰州金润宏成新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to solve the problem of traditional noble metal catalysts in cracking C 8 Due to the disadvantages of easy poisoning, short operation period, high cost and poor stability in distillate hydrogenation, the inventor developed this catalyst after painstaking research

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The preparation of embodiment 1 catalyst of the present invention

[0029] Take by weighing 100 parts by weight of nickel nitrate, 30 parts by weight of aluminum nitrate, and 10 parts by weight of zirconium oxychloride and dissolve them completely with nitric acid solution, add 15 parts by weight of silicon micropowder, titrate the above mixed solution with ammonia water under sufficient stirring conditions until the pH is equal to 7, After suction filtration, the precipitate was dried and pulverized, nitric acid, phosphoric acid, safflower gum, water were added, kneaded, shaped, dried at 110°C for 5 hours, and roasted at 600°C for 5 hours to obtain a finished catalyst. The composition content of the catalyst was 40% Ni, Si element is 12.5%, and zirconium element is 8%.

Embodiment 2

[0030] The preparation of embodiment 2 catalysts of the present invention

[0031] Weigh 100 parts by weight of nickel nitrate, 50 parts by weight of aluminum nitrate, and 1 part by weight of zirconium oxychloride and dissolve them completely with nitric acid solution, add 2 parts by weight of silicon micropowder, and titrate the above mixed solution with ammonia water under sufficient stirring conditions until the pH is equal to 8. After suction filtration, the precipitate was dried and pulverized, nitric acid, phosphoric acid, squash gum, water were added, kneaded, formed, dried at 100°C for 6 hours, and roasted at 500°C for 6 hours to obtain a finished catalyst. The element is 10%, and the zirconium element is 1%.

Embodiment 3

[0032] The preparation of embodiment 3 catalysts of the present invention

[0033] Take by weighing 100 parts by weight of nickel nitrate, 20 parts by weight of aluminum nitrate, and 20 parts by weight of zirconium oxychloride and dissolve them completely with nitric acid solution, add 20 parts by weight of silicon micropowder, titrate the above mixed solution with ammonia water under sufficient stirring conditions until the pH is equal to 7, After suction filtration, the precipitate was dried and pulverized, nitric acid, squash gum, and water were added, kneaded, formed, dried at 120°C for 4 hours, and roasted at 700°C for 4 hours to obtain a finished catalyst. 15%, zirconium element is 15%.

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Abstract

The disclosed preparation method for a catalyst with formula as NiaSibX1cAldOx comprises: selecting material as 20-60wt% Ni, 10-15wt% Si, and 1-15wt% X1 from IVB family; preparing aqueous solution, adding Si-contained material, adjusting pH value to 7-8, filtering, precipitating, drying, and baking. This invention overcomes defects of current noble metal catalyst, and has hydrogenation rate for diene more than 85% on some condition.

Description

technical field [0001] The invention relates to a catalyst for selective hydrogenation of diolefins and partial hydrogenation of monoolefins and its preparation, use method and application, especially suitable for cracking C 8 Catalyst for selective hydrogenation of distillate diolefins and partial hydrogenation saturation of monoolefins and its preparation, use and application. Background technique [0002] In recent years, my country's ethylene production capacity has been greatly increased. The output of pyrolysis gasoline, which is a by-product of ethylene cracking, is 50-100% (wt) of the ethylene production capacity. At present, there are generally two processes for the processing and application of pyrolysis gasoline, one is to directly hydrogenate the whole fraction of pyrolysis gasoline without separation; the other is to separate C 5 - and C 9 + , only for C in pyrolysis gasoline 6 -C 8 The distillate is used as raw material for aromatics extraction after two-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/835B01J21/06C10G45/06C10G45/36
Inventor 张小工
Owner 兰州金润宏成新材料科技有限公司
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