Method for preparing cyclopentanone and/or cyclopentanol by furfural or furfuryl alcohol

A technology for cyclopentanone and cyclopentanol, which is applied in the field of preparing cyclopentanone and/or cyclopentanol, can solve problems such as harsh reaction conditions, and achieve the effects of no reduction in activity, simple process, and convenient operation

Inactive Publication Date: 2012-12-05
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the main synthesis methods of cyclopentanone are pyrolysis of adipic acid and oxidation of cyclopentene, but

Method used

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  • Method for preparing cyclopentanone and/or cyclopentanol by furfural or furfuryl alcohol
  • Method for preparing cyclopentanone and/or cyclopentanol by furfural or furfuryl alcohol
  • Method for preparing cyclopentanone and/or cyclopentanol by furfural or furfuryl alcohol

Examples

Experimental program
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Effect test

Embodiment 1

[0027] Weigh 1g of furfural and 20mL of water and put them into a 50mL reactor, and then put in 0.5g of catalyst (CuRu / C). Replace the air in the kettle with hydrogen for three to four times, and then fill it with 14MPa hydrogen to minimize the air content in the kettle, especially the oxygen content, so as to maintain the reducing atmosphere in the kettle. Turn on the stirring device to about 1000 rpm, then heat to 150° C. and maintain it for 4 hours. After the reaction was completed, it was cooled to room temperature, and the liquid product was collected. The liquid product was analyzed for its chemical composition by GC-MS and GC. As a result, the conversion rate of furfural was 98.5%, the yield rate of cyclopentanone was 47.9%, the yield rate of cyclopentanol was 1.4%, and the yield rate of tetrahydrofurfuryl alcohol was 0.8%.

Embodiment 2

[0029] Weigh 1g of furfural and 20mL of water and put them into a 50mL reactor, and then put in 0.5g of catalyst (CuPd / C). Replace the air in the kettle with hydrogen for three to four times, and then fill it with 10MPa hydrogen to minimize the air content in the kettle, especially the oxygen content, so as to maintain the reducing atmosphere in the kettle. Turn on the stirring device to about 1000 rpm, then heat to 200°C and maintain for 4 hours. After the reaction was completed, it was cooled to room temperature, and the liquid product was collected. The liquid product was analyzed for its chemical composition by GC-MS and GC. As a result, the conversion rate of furfural was 100%, the yield rate of cyclopentanone was 24.6%, the yield rate of cyclopentanol was 5.1%, and the yield rate of tetrahydrofurfuryl alcohol was 25.2%.

Embodiment 3

[0031] Weigh 1g of furfural and 20mL of water and put them into a 50mL reactor, and then put in 0.2g of catalyst (CuZnCeAl). Replace the air in the kettle with hydrogen for three to four times, and then fill it with 8MPa hydrogen to minimize the air content in the kettle, especially the oxygen content, so as to maintain the reducing atmosphere in the kettle. Turn on the stirring device to about 1000 rpm, then heat to 150° C. and maintain it for 6 hours. After the reaction was completed, it was cooled to room temperature, and the liquid product was collected. The liquid product was analyzed for its chemical composition by GC-MS and GC. As a result, the conversion rate of furfural was 97.5%, the yield rate of cyclopentanone was 26.5%, the yield rate of cyclopentanol was 1.5%, and the yield rate of tetrahydrofurfuryl alcohol was 47.4%.

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Abstract

The invention provides a method for preparing cyclopentanone and/or cyclopentanol by furfural or furfuryl alcohol. The method includes the following steps of firstly, mixing furfural or furfuryl alcohol with solvent according to proportion; secondly, adding catalyst with hydrogenating function into the mixture in the first step; and thirdly, reacting in the reducing atmosphere to obtain cyclopentanone and/or cyclopentanol. The method for preparing cyclopentanone and/or cyclopentanol by furfural or furfural alcohol is high in yield of the cyclopentanone and/or cyclopentanol, and further, is simple in process, convenient to operate, mild in reaction conditions, no carbon deposition is caused during the whole reaction, the catalyst is low in cost and easy to obtain and can be reused without lowering activity.

Description

technical field [0001] The invention relates to the field of fine chemicals, in particular to a method for preparing cyclopentanone and / or cyclopentanol from furfural or furfuryl alcohol. Background technique [0002] With the depletion of fossil energy, the use of fossil resources to prepare chemicals can no longer meet the current needs. The catalytic conversion and utilization of renewable resources has attracted more and more attention. Furfural is a bulk chemical derived from agricultural waste. Its effective use can not only reduce the dependence on petroleum resources, but also increase the added value of agricultural products. A series of products with industrial application prospects can be prepared by using furfural as raw material. Among them, hydrotreating furfural is a commonly used method. Chemicals such as furfuryl alcohol, tetrahydrofurfuryl alcohol, 2-methylfuran, 2-methyltetrahydrofuran, pentadiene, pentanediol, and acetylpropanol can be prepared from fu...

Claims

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Application Information

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IPC IPC(8): C07C49/395C07C45/59C07C35/06C07C29/145
Inventor 张颖郭建华
Owner UNIV OF SCI & TECH OF CHINA
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