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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 Stability 2 o 3 catalyst, but the average pore size of the catalyst prepared in this way is small, which is not suitable for the reaction involving macromolecular substances

Method used

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Experimental program
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Effect test

Embodiment 1

[0016] With nitric acid in [H + ] / [AlOOH] molar ratio is under the condition of 0.25, with pseudo-boehmite powder peptization 24 hours, obtains the alumina sol 1500g that alumina solid content is 5%, then adds a certain amount of silica solid content and is 40% Silica sol, the two were mixed and stirred for 5 hours to obtain silica-alumina sol. Dissolve nickel chloride in an appropriate amount of water to obtain a nickel salt solution of 0.10 g nickel / ml. Add an appropriate amount of nickel salt solution to the silica-alumina sol, adjust the pH of the sol to 8.5 with ammonia water, and then o C aging for 24 hours, and then filtered and dried to obtain the corresponding catalyst precursor. catalyst precursor at 400 o C roasting for 4 hours to obtain oxidized NiO / Al 2 o 3 -SiO 2 catalyst. Catalyst in 1.5 L / min pure hydrogen flow, at 450 o Reduction at C for 12 hours to obtain metallic Ni / Al 2 o 3 -SiO 2 catalyst.

[0017] Change the amount of silica sol and nickel sa...

Embodiment 2

[0019] With nitric acid in [H + ] / [AlOOH] molar ratio is under the condition of 0.25, with pseudo-boehmite powder peptization 24 hours, obtains the alumina sol 1500g that alumina solid content is 5%, then adds a certain amount of silica solid content and is 40% Silica sol, the two were 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 complex solution to the silica-alumina sol, at 95 o The complexed nickel ion is heated and decomposed at C for 8 hours, and then the corresponding catalyst precursor is obtained by filtering and drying. catalyst precursor at 400 o C roasting for 4 hours to obtain oxidized NiO / Al 2 o 3 -SiO 2 catalyst. Catalyst in 1.5 L / min pure hydrogen flow, at 450 o Reduction at C for 12 hours to obtain...

Embodiment 3

[0027] Aromatics account for 65 to 80% of the cracked C9 and above hydrocarbon fractions, and contain a large amount of polymerizable unsaturated components. This test example uses the cracked C9 and above hydrocarbons and saturated hydrogenated oil in a certain ratio. The raw materials (see Table 4 for specific components) were tested for the hydrogenation activity of the catalyst of the present invention. The catalyzer that embodiment 1~2 and comparative example 1 obtains at 450 o C was reduced with hydrogen for 24 hours. The hydrogenation reaction uses an adiabatic fixed-bed reactor, and the process conditions are: the inlet temperature is 50 o C, pressure 3.0 MPa, fresh oil space velocity LHSV=1.5 hours -1 , the volume ratio of hydrogen to oil H 2 / raw 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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