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Method for load type amorphous ruthenium boron-containing catalyst to catalyzing hydrogenating and reducing carbonyl compound to prepare alcohol

A carbonyl compound and catalytic hydrogenation technology, which is applied in the preparation of hydroxyl compounds, the preparation of organic compounds, catalyst carriers, etc., can solve the problems of high price of ruthenium metal, and achieve the effects of simple reaction operation, no pollution cost, and mild reaction conditions.

Inactive Publication Date: 2007-07-11
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, ruthenium metal is expensive, and loading it on a carrier can improve its catalytic activity and reduce the cost of the catalyst

Method used

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  • Method for load type amorphous ruthenium boron-containing catalyst to catalyzing hydrogenating and reducing carbonyl compound to prepare alcohol
  • Method for load type amorphous ruthenium boron-containing catalyst to catalyzing hydrogenating and reducing carbonyl compound to prepare alcohol
  • Method for load type amorphous ruthenium boron-containing catalyst to catalyzing hydrogenating and reducing carbonyl compound to prepare alcohol

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The reduction reaction of cinnamaldehyde is carried out in a glass tube, and the reaction tube is heated by an oil bath. 0.2g of Ru-Sn-B / SiO 2 Put the catalyst into a glass reaction tube, feed 0.1MPa hydrogen, pre-reduce at 180°C for 2 hours, control the reaction temperature at 30°C, add 7mmol cinnamaldehyde and 5mL tetrahydrofuran, and mix thoroughly in the reaction tube, provided by Shimadzu Corporation GC-14C type gas chromatography was used to detect the degree of reaction, and naphthalene was used as an internal standard. The reaction formula is as follows:

[0024]

[0025] After reacting for 5 hours under the above conditions, the conversion rate of cinnamaldehyde and the selectivity of cinnamyl alcohol both reached 100%.

Embodiment 2

[0027] The reduction reaction of benzaldehyde is carried out in a glass tube, and the reaction tube is heated by an oil bath. 0.2g of Ru-Sn-B / SiO 2 The catalyst was added into a glass reaction tube, and 0.1 MPa of hydrogen gas was introduced. After pre-reduction at 180°C for 2 hours, the reaction temperature was controlled at 30°C, 7mmol of benzaldehyde and 5mL of tetrahydrofuran were added, and mixed thoroughly in the reaction tube, provided by Shimadzu Corporation GC-14C type gas chromatography was used to detect the degree of reaction, and naphthalene was used as an internal standard. The reaction formula is as follows:

[0028]

[0029] After reacting for 12 hours under the above conditions, the conversion rate of benzaldehyde and the selectivity of benzyl alcohol both reached 100%.

Embodiment 3

[0031] The reduction reaction of benzaldehyde is carried out in a glass tube, and the reaction tube is heated by an oil bath. 0.1g of Ru-Sn-B / SiO 2 The catalyst was added to the glass reaction tube, 0.1MPa hydrogen gas was passed through, and after pre-reduction at 180°C for 2 hours, the reaction temperature was controlled at 70°C, 7mmol of benzaldehyde and 5mL of ethanol were added, and mixed thoroughly in the reaction tube, provided by Shimadzu Corporation GC-14C type gas chromatography was used to detect the degree of reaction, and naphthalene was used as an internal standard. After 14 hours of reaction, the conversion rate of benzaldehyde and the selectivity of benzyl alcohol both reached 100%.

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Abstract

The invention discloses a making method of alcohol based on catalytic liquid-phase hydrogenation reducing carbonyl compound under high pressure, which comprises the following steps: adopting carbonyl compound as raw material and ruthenium-boron loaded type non-crystal alloy as catalyst; setting the pressure as normal pressure at 20-90 deg. c; controlling the reacting time at 5-60h; saving energy.

Description

technical field [0001] The invention relates to the preparation of alcohols, in particular to a method for preparing alcohols by catalytically hydrogenating and reducing carbonyl compounds with a supported amorphous ruthenium-boron catalyst under normal pressure. Background technique [0002] The hydrogenation reduction of carbonyl compounds is a very important unit reaction in organic synthesis. Based on the requirements of energy saving and environmental protection, people continue to study new catalysts suitable for the hydrogenation reduction reaction of carbonyl compounds, so that the reaction process can reduce energy consumption and be more environmentally friendly. [0003] Since the 1980s, due to their unique geometric structure and surface electronic state characteristics, amorphous alloy catalysts have shown excellent catalytic performance in many catalytic hydrogenation reactions, and have attracted widespread attention, especially RuB non- Crystalline alloy cat...

Claims

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Application Information

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IPC IPC(8): C07C29/145C07D213/30C07B35/02C07B41/02B01J23/46B01J21/02B01J32/00
Inventor 纪红兵黄月英裴丽霞
Owner SOUTH CHINA UNIV OF TECH
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