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Catalyst for combined production of sec-butyl alcohol and ethanol by sec-butyl acetate hydrogenation and its preparation method and use

A sec-butyl acetate and catalyst technology, which is applied in the hydrogenation of sec-butyl acetate to co-produce sec-butanol and ethanol as a catalyst and its preparation and application field, can solve the problems of low product selectivity and high hydrogen ester, and achieve a simple preparation method , high selectivity and good stability

Active Publication Date: 2015-12-09
SHANGHAI HUAYI GRP CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] One of the technical problems to be solved by the present invention is the problem of high hydrogen ester ratio and low product selectivity in the prior art, and a new catalyst for the hydrogenation of sec-butyl acetate to co-produce sec-butanol and ethanol is provided

Method used

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  • Catalyst for combined production of sec-butyl alcohol and ethanol by sec-butyl acetate hydrogenation and its preparation method and use
  • Catalyst for combined production of sec-butyl alcohol and ethanol by sec-butyl acetate hydrogenation and its preparation method and use
  • Catalyst for combined production of sec-butyl alcohol and ethanol by sec-butyl acetate hydrogenation and its preparation method and use

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 100g of Cu(NO 3 ) 2 and 5.0g of Zn(NO 3 ) 2 Put it in a beaker, add 500g of distilled water to dissolve it completely, and record it as solution 1; weigh 180g of silica sol and dissolve it in it, then slowly drop concentrated nitric acid into it with a dropper, and record it as solution 2; put 90g of urea in another Add 500g of distilled water into the beaker to dissolve it completely, and record it as solution 3; prepare the catalyst by co-precipitation method, keep the temperature at 95°C, control the reaction end point pH=7.0, and age for 12 hours. The obtained catalyst precursor slurry is washed and filtered. Dry at 120°C for 24 hours and calcinate at 500°C for 6 hours to obtain the target product catalyst.

[0031] The catalyst prepared above was made into 20-30 mesh particles, loaded into a tubular reactor with a diameter of 12 mm, and activated at 300° C. for 6 hours under a hydrogen atmosphere. Using sec-butyl acetate as raw material, the reaction temperatur...

Embodiment 2

[0033] 100g of Cu(NO 3 ) 2 and 3.0g of Ca(NO 3 ) 2 Put it in a beaker, add 500g of distilled water to dissolve it completely, and record it as solution 1; weigh 160g of silica sol and dissolve it in it, then slowly drop concentrated nitric acid into it with a dropper, and record it as solution 2; put 100g of sodium carbonate in another Add 500g of distilled water into a beaker to make it completely dissolved, which is counted as solution 3. Prepare the catalyst by co-precipitation method, the precipitation temperature is 80°C, control the reaction end point pH=7.5, and age for 12 hours. The obtained catalyst precursor slurry is washed and filtered, dried at 100°C for 24 hours, and roasted at 450°C for 6 hours. That is, the target product catalyst is obtained.

[0034] The evaluation process conditions are the same as in Example 1.

Embodiment 3

[0036] 100g of Cu(NO 3 ) 2 and 5.0g of Zr(NO 3 ) 4 Put it in a beaker, add 500g of distilled water to dissolve it completely, and record it as solution 1; weigh 90g of white carbon black and dissolve it in water, then slowly drop concentrated nitric acid into it with a dropper, and record it as solution 2; put 100g of sodium carbonate in Add 500g of distilled water to another beaker to dissolve it completely, and record it as solution 3; prepare the catalyst by co-precipitation method, keep the temperature at 60°C, control the reaction end point pH=7.5, and age for 12 hours. The obtained catalyst precursor slurry is washed and filtered Afterwards, it was dried at 100°C for 24 hours and calcined at 550°C for 6 hours to obtain the target product catalyst.

[0037] The evaluation process conditions are the same as in Example 1.

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Abstract

The invention relates to a catalyst for combined production of sec-butyl alcohol and ethanol by sec-butyl acetate hydrogenation and its preparation method and use. The catalyst mainly solves the problem that the prior art has a high hydrogen-ester ratio and low product selectivity. The catalyst for combined production of sec-butyl alcohol and ethanol by sec-butyl acetate hydrogenation comprises copper or copper oxide, and a silica carrier and an assistant. The assistant comprises at least one of CaO, La2O3, ZnO, ZrO2, K2O, BaO, B2O3, MgO, MnO and Li2O. The catalyst comprises, by mass, 20-75% of the copper or copper oxide, 20-80% of the silica carrier and 1-40% of the assistant. The catalyst and its preparation method and use solve the above problem and can be used for combined production of sec-butyl alcohol and ethanol by sec-butyl acetate hydrogenation.

Description

technical field [0001] The invention relates to a catalyst for the hydrogenation of sec-butyl acetate to co-produce sec-butanol and ethanol as well as its preparation method and application. Background technique [0002] In recent years, the domestic coal chemical industry has developed vigorously, and a large number of devices for synthesizing acetic acid by methanol low-pressure carbonylation have been built, resulting in a large excess production capacity of acetic acid, and the price of acetic acid continues to slump. Petrochemical and coal chemical industry produce abundant mixed C4 resources. The technology of preparing sec-butyl acetate through the addition and esterification of acetic acid and butene has been industrialized. With the rapid expansion of the production scale of sec-butyl acetate, it has gradually become a bulk chemical product, and the development of its downstream products has attracted widespread attention from academia and industry. [0003] Secon...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J21/08B01J23/80B01J23/78B01J23/72B01J21/10B01J23/83B01J37/03C07C29/149C07C31/08C07C31/12
Inventor 李永刚付朋向浩王敏芝孙思杰宁春利张春雷
Owner SHANGHAI HUAYI GRP CO
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