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Catalyst for preparing 1,4-butanediol as well as preparation method and application thereof

A catalyst, butanediol technology, applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc. Effect of reduced separation process, excellent hydrogenation selectivity

Active Publication Date: 2017-01-11
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is difficult to achieve the purpose according to the catalysts and methods disclosed in the prior art

Method used

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  • Catalyst for preparing 1,4-butanediol as well as preparation method and application thereof
  • Catalyst for preparing 1,4-butanediol as well as preparation method and application thereof
  • Catalyst for preparing 1,4-butanediol as well as preparation method and application thereof

Examples

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preparation example Construction

[0030]In the present invention, the catalyst for preparing butanediol can be prepared by various methods for preparing catalysts conventionally used in the art. The catalyst preparation method of the present invention can be obtained by existing catalyst preparation techniques, such as impregnation method, ion exchange method, blending method, kneading method, co-precipitation, deposition-precipitation, steamed ammonium precipitation, melting-suction filtration, ball milling and sol-gel methods. More preferred methods include coprecipitation, deposition-precipitation, distilled ammonium precipitation, melting-suction filtration, ball milling and a combination of sol-gel, these preparation catalyst methods are well known to those skilled in the art, in There are detailed introductions in books in this field, such as "Design and Development of Industrial Catalysts" written by Huang Zhongtao, and "Preparation of Solid Catalysts" written by Professor Gerhard Ertl. Wherein, the br...

preparation example 1

[0060] This preparation example is used to illustrate the catalyst for preparing butanediol and the preparation method thereof of the present invention.

[0061] Take 1L of 1.0mol / L copper nitrate aqueous solution in a beaker, add 1L of 1.0mol / L zinc nitrate, add 0.5L of 1mol / L tin tetrachloride aqueous solution to it dropwise under the condition of full stirring, and then add Guangzhou Precipitated silica 15g (silicon dioxide (SiO 2 ) content ≥ 95.0% by weight, fineness (325 mesh sieve residue) ≤ 1.8%, specific surface area of ​​400-600m 2 / g), and then slowly drip 1mol / L aqueous sodium carbonate solution to pH 7.0 to obtain a precipitate, which is washed and filtered, and dried overnight to obtain a dry filter cake. Granulating, roasting and decomposing, and tableting to obtain catalyst B-1.

[0062] Tested by a wavelength dispersive X-ray fluorescence spectrometer, the catalyst B-1 contains 30% by weight of tin as oxide, 31% by weight of copper as oxide, 33% by weight of ...

preparation example 2

[0064] This preparation example is used to illustrate the catalyst for preparing butanediol and the preparation method thereof of the present invention.

[0065] Take 1.2 L of 1.0 mol / L copper nitrate aqueous solution and place it in a beaker, add 0.8 L of 1.0 mol / L zinc nitrate, and add dropwise 0.4 L of 1 mol / L tin tetrachloride aqueous solution to it under the condition of sufficient stirring, Then add the precipitated silica 20g (silicon dioxide (SiO2) produced by Guangzhou People's Chemical Factory 2 ) content ≥ 95.0% by weight, fineness (325 mesh sieve residue) ≤ 1.8%, specific surface area of ​​400-600m 2 / g), and then slowly drip 1mol / L aqueous sodium carbonate solution to pH 7.2 to obtain a precipitate, which is washed and filtered, and dried overnight to obtain a dry filter cake. Granulating, roasting and decomposing, and tableting to obtain catalyst B-2.

[0066] Tested by a wavelength dispersive X-ray fluorescence spectrometer, the catalyst B-2 contains 25% by wei...

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Abstract

The invention relates to the field of catalysts, and discloses a catalyst for preparing 1,4-butanediol as well as a preparation method and an application thereof. The catalyst comprises a dispersant, a copper component, a zinc component and a modification component, wherein the dispersant is silicon dioxide, the modification component is selected from at least one metal component of bismuth, tin, vanadium, tungsten and molybdenum, preferably the modification component is selected from at least one metal component of bismuth and tin. The catalyst for preparing 1,4-butanediol is suitable for a hydrogenation reaction of bio-based succinic acid, can resist various impurities in the bio-based succinic acid, has excellent stability, and can hydrogenate succinic acid and succinic acid ester at the same time; the modification component improves adsorption performance and electronic overflow performance of the catalyst, and shows excellent hydrogenation selectivity.

Description

technical field [0001] The invention relates to the field of catalysts, in particular to a catalyst for preparing butanediol from bio-based succinic acid and its preparation method and application. Background technique [0002] 1,4-butanedioic acid is also known as succinic acid, and its hydrogenation product is 1,4-butanediol. Since polybutylene succinate is a biodegradable plastic, the industrial production of succinic acid has become a focus of attention in recent years. The industrial production of succinic acid includes chemical method, biotransformation method and electrolysis method. The chemical method and the electrolytic method use maleic anhydride as raw material, while the biological method uses starch, glucose and other biomass as raw materials to produce succinic acid through biomass conversion technology. [0003] The full name of 1,4-butanediol in English is 1,4-butanediol, and the English abbreviation is BDO, which belongs to saturated carbon four straight...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/835B01J23/843B01J23/847C07C29/149C07C31/20
Inventor 田保亮唐国旗杨溢李宝芹及振秋
Owner CHINA PETROLEUM & CHEM CORP
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