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Catalyst for hydrogenating cis-butenedioic anhydride to prepare butanedioic anhydride and its preparation method and application

A technology for succinic anhydride and catalyst, which is applied to the hydrogenation of maleic anhydride to prepare a succinic anhydride catalyst and its preparation field, can solve the problems of low selectivity of succinic anhydride and the like, and achieve the effect of long operation period and good stability

Active Publication Date: 2014-05-07
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation process of the catalyst is simple, and the prepared maleic anhydride hydrogenation succinic anhydride catalyst solves the problem of low catalyst activity and succinic anhydride selectivity when non-noble metals are used as active components

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 1. Preparation of the catalyst: a: Take 100g of activated carbon (the specific surface area is 964.6m 2 / g, the pore volume is 0.46m 3 / g, the average pore size is 19.15nm) was dried in a vacuum oven at 100°C for 6 hours; b: the dried activated carbon carrier was mixed with 134g of Co(NO 3 ) 2 Immerse the equal volume of the aqueous solution for 8 hours, and dry it in a vacuum oven for 10 hours at 100°C; 4 ) 2 MoO 4 119.2g of aqueous solution was impregnated in equal volume for 8 hours; d: dried in a vacuum oven at 100°C for 10 hours, and then roasted for 8 hours at 450°C in a nitrogen atmosphere; e: the mass percentage of the catalyst after roasting was 21.2% FeCl 3 138.4g of the solution was impregnated in an equal volume for 8 hours, dried in a vacuum oven at 100°C for 10 hours, and then roasted in a nitrogen atmosphere at 450°C for 8 hours to obtain the finished catalyst. The composition of the catalyst was Co: 6.1%, Mo: 3.8%, Fe: 7.6%.

[0023] 2. This catal...

Embodiment 2

[0025] 1. Preparation of the catalyst: a: Take 100g of activated carbon (the specific surface area is 705m 2 / g, the pore volume is 0.9cm 3 / g, the average pore diameter is 8nm) first use HNO with a mass concentration of 25% 3 Activated carbon was impregnated with the solution for 7 hours, washed and dried, then impregnated with γ-butyrolactone at a temperature of 85°C for 2 to 6 hours, washed and dried for use; 31.4% Co (NO 3 ) 2 Immerse the equal volume of the aqueous solution for 8 hours, and dry it in a vacuum oven for 10 hours at 100°C; 4 ) 2 MoO 4 129.4g of aqueous solution was impregnated in equal volume for 8 hours; d: dried in a vacuum oven at 100°C for 10 hours, and then roasted for 8 hours at 450°C in a nitrogen atmosphere; e: the mass percentage of the catalyst after roasting was 21.2% FeCl 3 138.4g of the solution was impregnated in an equal volume for 8 hours, dried in a vacuum oven at 100°C for 10 hours, and then roasted in a nitrogen atmosphere at 450°C ...

Embodiment 3

[0028] 1. Preparation of the catalyst: a: Take 100g of activated carbon (the specific surface area is 850m 2 / g, the pore volume is 0.7cm 3 / g, with an average pore size of 15nm) first use HNO with a mass concentration of 40% 3 Activated carbon was impregnated with the solution for 5 hours, washed and dried, then impregnated with γ-butyrolactone at a temperature of 75°C for 6 hours, washed and dried for use; Co (NO 3 ) 2 Immerse the equal volume of the aqueous solution for 8 hours, and dry it in a vacuum oven for 10 hours at 100°C; 4 ) 2 MoO 4 129.4g of aqueous solution was impregnated in equal volume for 8 hours; d: dried in a vacuum oven at 100°C for 10 hours, and then roasted for 8 hours at 450°C in a nitrogen atmosphere; e: the mass percentage of the catalyst after roasting was 28.8% FeCl 3153.1 g of the solution was impregnated in an equal volume for 8 hours, dried in a vacuum oven at 100°C for 10 hours, and then roasted at 450°C in an atmosphere of nitrogen for 8 ...

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Abstract

The invention discloses a catalyst for hydrogenating cis-butenedioic anhydride to prepare butanedioic anhydride, the catalyst uses activated carbon as a carrier, at least one of cobalt and nickel as an active component, at least one of molybdenum and tungsten as a first aid, at least one of iron, copper and zinc as a second aid, and comprises, by the final catalyst weight, 1%-10% of the active component, 3%-15% of the first aid and 5%-20% of the second aid. A preparation method of the catalyst for hydrogenating the cis-butenedioic anhydride to prepare the butanedioic anhydride is as follows: using the activated carbon as the carrier, and using an impregnation method for successive loading of the active component, the first aid and the second aid. The catalyst has the advantages of simple preparation process, and the prepared catalyst for hydrogenating the cis-butenedioic anhydride to prepare the butanedioic anhydride solves the problems that when a non-noble metal is used as the active component, the catalyst activity and the butanedioic anhydride selectivity are low.

Description

technical field [0001] The invention relates to a catalyst for preparing succinic anhydride by hydrogenation of maleic anhydride, a preparation method and application thereof, in particular to a catalyst for preparing succinic anhydride by hydrogenation of maleic anhydride suitable for a fixed bed process, a preparation method and application thereof. Background technique [0002] Succinic anhydride, also known as succinic anhydride, molecular formula C 4 h 4 o 3 , It is colorless needle-like or granular crystal with a slightly pungent smell; soluble in ethanol, chloroform and carbon tetrachloride, slightly soluble in water and ether, and can be hydrolyzed into succinic acid with hot water. Succinic anhydride is mainly used in the synthesis of food processing aids, pharmaceuticals, pesticides, esters and resins, as well as the synthesis and analysis reagents of succinic acid. Synthetic resin industry is used to make alkyd resin and ion exchange resin, plastic industry is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/882B01J23/887B01J23/888B01J23/885B01J23/883C07D307/60
Inventor 刘野霍稳周李花伊魏晓霞田丹
Owner CHINA PETROLEUM & CHEM CORP
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