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A kind of catalyst and preparation method for preparing 1,4-butanediol

A technology of catalyst and butanediol, which is applied in the chemical industry, can solve the cumbersome and complicated problems of catalyst production and synthesis process, and achieve the effects of improving hydrogenation performance, prolonging service life and improving activity

Active Publication Date: 2016-01-20
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with the one-stage reaction, it has the disadvantages of cumbersome and complicated catalyst production and synthesis process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 11gCu(NO 3 ) 2 ·3H 2 O, 9.8gZn(NO 3 ) 2 ·6H 2 O, 2gNi(NO 3 ) 2 ·6H 2 O and 1.5gMn(NO 3 ) 2 4H 2 O was dissolved in 100mL water to form a metal ion solution; 13.3gNa 2 CO 3 Dissolve in 120mL water to obtain a precipitant solution. In a water bath at 60°C, add the two solutions dropwise while stirring, and control the pH value at 7-9. After the dropwise addition was completed, the stirring was continued for 2 hours, and the temperature was raised to 80° C. for 2 hours of aging. Then it was suction filtered, washed, dried at 110°C for 10 hours, and calcined at 900°C for 8 hours to obtain the product A-1. The mass percent content of each component element in the catalyst is: Cu40wt%, Ni5.5wt%, Mn4.5wt%, Zn30wt%.

Embodiment 2

[0026] 10gCu(NO 3 ) 2 ·3H 2 O, 9.8gZn(NO 3 ) 2 ·6H 2 O, 2.5gNi(NO 3 ) 2 ·6H 2 O and 2gMn(NO 3 ) 2 4H 2 O was dissolved in 100mL water to form a metal ion solution; 13.3gNa 2 CO 3 Dissolve in 120mL water to obtain a precipitant solution. In a water bath at 60°C, add the two solutions dropwise while stirring, and control the pH value at 7-9. After the dropwise addition was completed, the stirring was continued for 2 hours, and the temperature was raised to 80° C. for 2 hours of aging. Then it was suction filtered, washed, dried at 110°C for 10 hours, and calcined at 900°C for 8 hours to obtain product A-2. The mass percent content of each component element in the catalyst is: Cu37wt%, Ni6.9wt%, Mn6.1wt%, Zn30wt%.

Embodiment 3

[0028] 12.5gCu(NO 3 ) 2 ·3H 2 O, 10.2gZn(NO 3 ) 2 ·6H 2 O, 1.5gNi(NO 3 ) 2 ·6H 2 O and 1gMn(NO 3 ) 2 4H 2 O was dissolved in 100mL water to form a metal ion solution; 13.3gNa 2 CO 3 Dissolve in 120mL water to obtain a precipitant solution. In a water bath at 60°C, add the two solutions dropwise while stirring, and control the pH value at 7-9. After the dropwise addition was completed, the stirring was continued for 2 hours, and the temperature was raised to 80° C. for 2 hours of aging. Then it was suction filtered, washed, dried at 110°C for 10 hours, and calcined at 900°C for 8 hours to obtain product A-3. The mass percent content of each component element in the catalyst is: Cu43wt%, Ni3.9wt%, Mn2.9wt%, Zn30wt%.

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Abstract

The invention discloses a catalyst for preparing 1,4-butanediol and a preparation method thereof. The catalyst uses zinc oxide as a carrier, copper and nickel as active components, M as a promoter, Cu-Ni-Zn-M-O type catalyst, wherein M is manganese or magnesium. The weight content of the metal elements in the catalyst is: copper element 30wt%-60wt%, nickel element 2wt%-10wt%, zinc element 20wt%-40wt%, M element 2wt%-10wt%. The preparation method includes the following contents: making a mixed solution of soluble salts of Cu, Ni, Zn and M, mixing it with a precipitant solution under stirring at 50-70°C, controlling the pH value to 7-9, stirring for 1-3 hours, and raising the temperature to 80-90°C, aging for 2-10 hours, filtering to obtain a precipitate, washing the precipitate, drying, roasting, and molding to obtain the product. The catalyst of the invention has the advantages of high conversion rate, good product selectivity, long service life, low cost, etc., and the preparation method is simple and easy to operate.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and in particular relates to a catalyst and a preparation method for preparing 1,4-butanediol. Background technique [0002] 1,4-Butanediol (BDO) is an important organic chemical raw material, mainly used in the production of polybutylene terephthalate (PBT), polyurethane (PU), γ-butyrolactone (GBL) and Tetrahydrofuran (THF). In recent years, due to the rapid growth of demand for thermoplastic elastic fibers and elastomers, the demand for polytetramethylene ether glycol (PTMEG) and polytetrahydrofuran ether (PTMG) as monomers is strong, making the upstream raw material 1,4-butanedi Alcohol demand is also growing rapidly. Therefore, it is of great significance to develop a technology for producing 1,4-butanediol. [0003] The production routes of 1,4-butanediol are as follows: (1) Reppe method using acetylene and formaldehyde as raw material; (2) hydrogenation process using maleic anh...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/889B01J23/80C07C31/20C07C29/149
Inventor 王春梅苏杰范丹丹侯学伟李风华
Owner CHINA PETROLEUM & CHEM CORP