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Nickel-based catalyst

A nickel-based catalyst, alumina technology, applied in physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, etc., can solve the problems of low active specific surface and low nickel content, etc.

Inactive Publication Date: 2009-01-21
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is the problem of low nickel content and low activity specific surface in the prior art, and a new nickel-based catalyst is provided

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] With nitric acid in [H + ] / [AlOOH] molar ratio of 0.25, the pseudo-boehmite powder was peptized for 24 hours to obtain an alumina sol with a solid content of 5% alumina. Nickel chloride was dissolved 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 into the alumina sol, age at 60° C. for 24 hours, and then dry to obtain the corresponding catalyst precursor. The catalyst precursor was calcined at 400°C for 4 hours to obtain oxidized NiO / Al 2 o 3 catalyst. The catalyst was reduced at 450°C for 12 hours in a pure hydrogen flow of 1.5 L / min to obtain metallic Ni / Al 2 o 3 catalyst.

[0013] Change the amount of nickel salt solution added to the alumina sol to obtain catalysts 1-2 in sequence, see Table 1. The physical property data of corresponding catalysts obtained by nitrogen physical adsorption are shown in Table 2. The catalyst reduction degree, dispersion degree and active ...

Embodiment 2

[0021] The preparation and operating conditions of the catalyst were the same as in Example 1, except that the precursor of the nickel salt solution was changed to nickel acetate, and the concentration of the nickel salt solution was 0.04 g nickel / ml. Catalysts 3-4 were sequentially obtained according to the amount of nickel salt solution added to the alumina sol, see Table 1. The physical property data of corresponding catalysts obtained by nitrogen physical adsorption are shown in Table 2. The catalyst reduction degree, dispersion degree and active surface area data are shown in Table 3.

Embodiment 3

[0023] With nitric acid in [H + ] / [AlOOH] molar ratio of 0.25, the pseudo-boehmite powder was peptized for 24 hours to obtain an alumina sol with a solid content of 5% alumina. In terms of molar ratio, basic nickel carbonate:ammonia water:ammonium carbonate=1:6.0:1.5, add an appropriate amount of water to obtain a nickel-ammonia complex solution of 0.10 g nickel / ml. Add the nickel ammonia complex solution to the alumina sol, heat and decompose the complexed nickel ions at 95° C. for 8 hours, and then dry or filter to obtain the corresponding catalyst precursor. The catalyst precursor was calcined at 400°C for 4 hours to obtain oxidized NiO / Al 2 o 3 catalyst. The catalyst was reduced at 450°C for 12 hours in a pure hydrogen flow of 1.5 L / min to obtain metallic Ni / Al 2 o 3 catalyst.

[0024] Change the amount of nickel-ammonia complex solution added to the alumina sol to obtain catalysts 5-6 in sequence, see Table 1. The physical property data of corresponding catalysts o...

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Abstract

The invention relates to a nickel-based catalyst which is mainly used for solving the problems of low nickel content and low active specific surface area in the prior art. The nickel-based catalyst adopts the nickel-based catalyst and comprises the following components of (a) 5 to 75 percent of nickel or oxide thereof and (b) the rest of aluminium oxide carrier counted by the percent by weight of the catalyst, wherein, a precursor of the aluminium oxide carrier is aluminium sol, and the precursor of the nickel is selected from at least one of nickel acetate, nickel chloride or nickel ammonia complex; therefore, the technical proposal can better solve the problems and can be widely used in the hydrotreating industrial production of light oil fractions, heavy oil fractions, unsaturated oils and fats and pyrolysis gasoline, in particular to pyrolysis C9 and hydrocarbon thereabove.

Description

technical field [0001] The invention relates to a nickel-based catalyst, in particular to a nickel-based catalyst that can be used for the hydrogenation of light oil fractions, heavy oil fractions, unsaturated oils, pyrolysis gasoline, especially cracked carbon nine and above hydrocarbons. Background technique [0002] Ni / Al with high nickel content and high active specific surface 2 o 3 Catalysts are very important in the fields of petrochemical catalytic hydrogenation, hydrodesulfurization and oil hydrogenation. U.S. Patent (USP 3,320,182) earlier provided the Ni / Al with high nickel content prepared by co-precipitation method 2 o 3 catalyst method, but it is well known that this method tends to form nickel-aluminum spinel. US patents (USP6,673,743 and USP 4,490,480) and Chinese patent (ZL 00803678.0) describe a nickel catalyst that can be used for hydrogenation of oil products, and the nickel content can reach 5-75%. The above-mentioned catalyst is obtained by deposit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/755B01J23/835C10G47/12
Inventor 王建强赵多吴征刘仲能
Owner CHINA PETROLEUM & CHEM CORP
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