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Selective hydrogenation catalyst and application thereof

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., which can solve the problem of easy loss of catalyst active components and difficult regeneration. , high price and other problems, to achieve the effect of excellent hydrogenation activity and selectivity, reducing content and highlighting selectivity

Active Publication Date: 2010-09-29
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Precious metal catalysts have good low-temperature activity and mild reaction conditions, but their disadvantages are that the active components of the catalyst are easy to lose, expensive, and difficult to regenerate
Thus, limitations for many hydrogenation processes

Method used

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  • Selective hydrogenation catalyst and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The alumina carrier formed by pseudo-boehmite produced by Beijing Research Institute of Chemical Industry was used. The specific surface area and pore volume of the carrier are listed in Table 1. The alumina carrier was impregnated with an aqueous solution containing nickel nitrate, ammonium heptamolybdate and zinc nitrate. Then dry, roast at 400° C., and then reduce with hydrogen at 400° C. for 4 hours to obtain different catalysts A. The metal component content of the catalyst is listed in Table 1.

Embodiment 2

[0040] The alumina carrier formed by pseudo-boehmite produced by Beijing Research Institute of Chemical Industry is used. The specific surface area and pore volume of the carrier are listed in Table 1. First, the alumina carrier is impregnated with an aqueous solution of potassium bicarbonate, then dried, and then washed with An aqueous solution of nickel, ammonium heptamolybdate and zinc nitrate impregnated the alumina support treated with potassium bicarbonate, then dried, calcined at 400 °C, and then reduced with hydrogen at 400 °C for 4 hours to obtain different catalysts B, C and D, the metal component content of each catalyst is listed in Table 1.

Embodiment 3

[0042] The alumina carrier formed by pseudoboehmite produced by Beijing Research Institute of Chemical Industry is used. The specific surface area and pore volume of the carrier are listed in Table 1. First, the alumina carrier is impregnated with an aqueous solution of potassium hydroxide, then dried, and then washed with acetic acid containing An aqueous solution of nickel, ammonium heptamolybdate and zinc acetate was spray-coated on an alumina support treated with potassium hydroxide, then dried, calcined at 400°C, and reduced with hydrogen at 400°C for 4 hours to obtain different catalysts E, F and G, the metal component content of each catalyst is listed in Table 1.

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Abstract

The invention discloses a selective hydrogenation catalyst and application thereof, belonging to the technical field of hydrogenation. In order to satisfy the demand of non-precious metal catalysts for selective hydrogenation of alkyne and alkadiene in hydrocarbon flow, the invention discloses a supported catalyst which takes nickel, molybdenum and zinc as catalytic components. Through adding two assistants, i.e. molybdenum and zinc in nickel active component, the activity, the selectivity and the stability of the catalyst are obviously improved. If alkali metal compounds are used for treating carriers or alkali metals are added in the nickel active component, the stability of the catalyst can be further improved and the regeneration period of the catalyst can be prolonged. The invention additionally discloses the application of the catalyst in the hydrogenation of gasoline and the selective hydrogenation of C4 and C5 fractions, pyrolysis gas and C3 fractions. The catalyst of the invention has the advantages of excellent catalytic activity and selectivity and good stability.

Description

technical field [0001] The present invention relates to a selective hydrogenation catalyst, more specifically, the present invention relates to a selective hydrogenation catalyst with nickel as an active component. Background technique [0002] In the selective hydrogenation of alkynes and dienes in hydrocarbon streams, the selected catalysts and reaction conditions are also different due to the different composition of raw materials and different target products. A selective hydrogenation catalyst with excellent catalytic performance should not only have high hydrogenation activity and selectivity, but also have good stability. [0003] CN85100761A, CN85106117A, CN1236333A and CN1084222C have all introduced the selective hydrogenation catalyst that is used to process the hydrocarbon stream that contains diolefins, they are all with palladium, platinum and other precious metals as active components, then add sodium, potassium, lithium, magnesium and other auxiliary agent, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/883B01J23/80C10G45/38C07C5/03C07C5/08
CPCY02P20/584
Inventor 田保亮戴伟唐国旗李宝芹张齐张桂英
Owner CHINA PETROLEUM & CHEM CORP
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