Nickel base catalyst

A nickel-based catalyst, catalyst technology, applied in physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, etc. question

Active Publication Date: 2013-12-04
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Zhang Yuhong et al. used the pseudo-boehmite peptization method to prepare AlOOH sol, by dispersing Ni(NO 3 ) 2 Solution Preparation of NiO/γ-Al with High Thermal Stabi

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0015] [Example 1]

[0016] Use nitric acid in [H + ] / [AlOOH] molar ratio of 0.25, peptize the pseudo-boehmite powder for 24 hours to obtain 1500g of alumina sol with an alumina solid content of 5%, and then add a certain amount of silica with a solid content of 40% Silica sol, the two are mixed and stirred for 5 hours to obtain silica alumina sol. Dissolve nickel chloride in an appropriate amount of water to obtain 0.10 g nickel / ml nickel salt aqueous solution. Add an appropriate amount of nickel salt aqueous solution to the silica-alumina sol, adjust the pH of the sol to 8.5 with ammonia, and then adjust the pH to 60 o Aging for 24 hours at C, then filtering and drying to obtain the corresponding catalyst precursor. Catalyst precursor at 400 o C calcined for 4 hours to obtain oxidized NiO / Al 2 O 3 -SiO 2 catalyst. The catalyst is in a pure hydrogen flow of 1.5 liters / min, at 450 o Reduction under C for 12 hours to obtain metallic Ni / Al 2 O 3 -SiO 2 catalyst.

[0017] The amoun...

Example Embodiment

[0018] [Example 2]

[0019] Use nitric acid in [H + ] / [AlOOH] molar ratio of 0.25, peptize the pseudo-boehmite powder for 24 hours to obtain 1500g of alumina sol with an alumina solid content of 5%, and then add a certain amount of silica with a solid content of 40% Silica sol, the two are mixed and stirred for 5 hours to obtain silica alumina sol. In terms of molar ratio, basic nickel carbonate: ammonia water: ammonium carbonate=1:6.0:1.5, adding an appropriate amount of water to obtain a nickel-ammonia complex solution of 0.10 g nickel / ml. Add an appropriate amount of nickel-ammonia complexing solution to the silica-alumina sol, at 95 o The complexed nickel ions are heated and decomposed at C for 8 hours, and then filtered and dried to obtain the corresponding catalyst precursor. Catalyst precursor at 400 o C calcined for 4 hours to obtain oxidized NiO / Al 2 O 3 -SiO 2 catalyst. The catalyst is in a pure hydrogen flow of 1.5 liters / min, at 450 o Reduction under C for 12 hours ...

Example Embodiment

[0026] [Example 3]

[0027] The aromatics in the cracked C9 and above hydrocarbon fractions account for 65-80%, and also contain a large amount of polymerizable unsaturated components. In this test example, the cracked C9 and above hydrocarbons and saturated hydrogenated oil are prepared according to a certain ratio (See Table 4 for specific components) for the hydrogenation activity test of the catalyst of the present invention. The catalysts obtained in Examples 1 to 2 and Comparative Example 1 were heated at 450 o C is reduced with hydrogen for 24 hours. Adiabatic fixed bed reactor is used for hydrogenation reaction, and the process conditions are: inlet temperature 50 o C, pressure 3.0 MPa, fresh oil space velocity LHSV=1.5 hours -1 , Hydrogen oil volume ratio H 2 / Feedstock oil = 600:1, the experimental results are shown in Table 5.

[0028] Table 2

[0029]

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Abstract

The present invention relates to a nickel base catalyst, wherein problems of low nickel content and low active specific surface in the prior art are mainly solved with the present invention. The technical scheme comprises that the catalyst comprises the following components, by weight: a) 20-75 parts of metal nickel, and b) 25-80 parts of a composite oxide carrier comprising 20-40 parts by weight of aluminum oxide and 5-40% by weight of silicon oxide, wherein a specific surface area of the catalyst is 150-400 m<2>/g, a pore volume is 0.3-0.8 ml/g, and an average pore size is 5-15 nm. With the technical scheme, the problems in the prior art are well solved, and the catalyst can be widely used for industrial production of hydrotreating of light oil fractions, heavy oil fractions, unsaturated greases, cracking gasoline, and especially cracking C9 and hydrocarbons with a carbon atom number of more than 9.

Description

technical field [0001] The invention relates to a high-nickel-content catalyst, in particular to a nickel-based catalyst which can be used for the hydrogenation treatment of light oil fractions, heavy oil fractions, unsaturated oils, pyrolysis gasoline, especially cracked carbon nine and above hydrocarbons. Background technique [0002] Ni-supported catalysts with high nickel content and high activity specific surface are very important in the fields of petrochemical catalytic hydrogenation, hydrodesulfurization and oil hydrogenation. US patents (USP 6,673,743 and USP 4,490,480) and Chinese patents (ZL 00803678.0) describe a nickel catalyst that can be used for hydrogenation of oil products, and the nickel content can reach 5 to 75%. The above-mentioned catalyst is obtained by depositing-precipitating Ni ammonia solution into a transition state alumina suspension. US Patent No. 6,242,662 discloses a method of adding industrial aluminum hydroxide to nickel ammonia solution a...

Claims

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Application Information

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IPC IPC(8): B01J23/755C10G45/06C10G47/12
Inventor 王建强赵多刘仲能江兴华
Owner CHINA PETROLEUM & CHEM CORP
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