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Selective hydrogenation catalyst

A technology of selective hydrogenation and catalyst, applied in the direction of selective hydrogenation, physical/chemical process catalyst, metal/metal oxide/metal hydroxide catalyst, etc. Short preparation period, good application prospect and high activity effect

Active Publication Date: 2014-02-12
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the NiB catalyst prepared using the above-mentioned single sol is prone to the problem of monoolefins being over-hydrogenated into saturated alkanes in the application of selective hydrogenation of diolefins, and the selectivity of monoolefins is not high.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment l

[0030] Prepare a nickel acetate solution with a concentration of 0.1mol / L, add a certain amount of LaNO with a concentration of 0.1mol / L 3 , so that the molar ratio of La to Ni is 1:30, the mixed solution is stirred and mixed evenly with a certain amount of aluminum sulfate / titanium sulfate mixed sol with a solid content of 20%, and the atomic ratio of Ti:Al in the sol is 0.12. Then prepare KBH with a concentration of 1.5mol / L 4 solution (B:Ni=3.0:1.0, atomic ratio), at 15°C, under the protection of Ar gas, the KBH 4 Drop it into the mixed solution of mixed sol and nickel salt at a speed of 1-6ml / min until no gas is generated in the reaction. Nickel constituted 15% by weight of the catalyst. The resulting catalyst is denoted as Al.

Embodiment 2

[0032] Prepare a nickel chloride solution with a concentration of 0.1mol / L, and add a certain amount of CeCl with a concentration of 0.1mol / L 2 , the molar ratio of Ce to Ni is 1:9, the mixed solution is stirred and mixed evenly with a certain amount of aluminum sulfate / titanium sulfate mixed sol with a solid content of 20%, and the atomic ratio of Ti:Al in the sol is 0.23, Then prepare KBH with a concentration of 1.5mol / L 4 solution (B:Ni=3.0:1.0, atomic ratio), at 20°C, under the protection of Ar gas, the KBH 4 Drop it into the mixed solution of mixed sol and nickel salt at a speed of 1-6ml / min until no gas is generated in the reaction. Nickel constituted 15% by weight of the catalyst. The resulting catalyst is designated A2.

Embodiment 3

[0034] Prepare a nickel nitrate solution with a concentration of 0.1mol / L, and add a certain amount of CrCl with a concentration of 0.1mol / L 3 , the molar ratio of Cr and Ni is 3:97, the mixed solution is stirred and mixed evenly with a certain amount of aluminum nitrate / titanium nitrate mixed sol with a solid content of 20%, and the atomic ratio of Ti:Al in the sol is 0.34, .Reconstitute KBH with a concentration of 1.5mol / L 4 solution (B:Ni=3.0:1.0, atomic ratio), at 25°C, under the protection of Ar gas, the KBH 4 Drop it into the mixed solution of mixed sol and nickel salt at a speed of 1-6ml / min until no gas is generated in the reaction. Nickel constituted 15% by weight of the catalyst. The resulting catalyst is designated A3.

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PUM

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Abstract

The invention provides a selective hydrogenation catalyst. The selective hydrogenation catalyst is prepared by a method comprising the following steps: firstly, evenly mixing a soluble nickel salt solution with the mixed sol of an aluminum compound and a titanium compound to obtain a mixed solution; secondly, dropwise adding a metal boron hydride to the mixed solution in an inert atmosphere at a temperature ranging from 0 to 30 DEG C, stirring, and finally, obtaining an amorphous alloy catalyst with the composite sol as the carrier. The catalyst provided by the invention is characterized in that the preparation method of the catalyst is simple, the step of preparing a solid carrier is omitted, the preparation period is short and the cost is low, and the catalyst can be reused; and moreover, the catalyst is high in catalyst activity and good in selectivity, and has a good application prospect.

Description

technical field [0001] The invention relates to a selective hydrogenation catalyst, in particular to a supported amorphous alloy catalyst with a composite colloid as a carrier. The invention also relates to the use of said catalysts. Background technique [0002] Amorphous alloys are a class of materials with short-range ordered and long-range disordered atomic arrangements, and have excellent catalytic properties. Since 1960, Duwez et al. have prepared amorphous alloys for the first time by melt quenching. Since then, a more economical and simple chemical reduction method has been developed, and ultrafine amorphous alloys can be prepared by this method. Amorphous alloys have the following characteristics: (1) Amorphous alloys can be made into various composition samples in a wide range, so that their electronic properties can be adjusted in a wide range to prepare suitable active centers ; (2) The catalytic active center is uniformly distributed in a single form in a che...

Claims

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Application Information

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IPC IPC(8): B01J23/83B01J23/86B01J23/883B01J23/80B01J23/755C10G45/36C10G45/38
Inventor 杜周柴忠义纪玉国任玉梅张富春季静
Owner CHINA PETROLEUM & CHEM CORP