Catalyst system of hydrogen peroxide for redox cycloethane

A technology for oxidizing cyclohexane and hydrogen peroxide, applied in physical/chemical process catalysts, oxidation reaction preparation, organic chemistry, etc., can solve problems such as low conversion rate, repeatable loss of active components, catalyst recovery and reuse, etc. Achieve the effect of increased conversion rate, high activity and good activity

Inactive Publication Date: 2005-10-12
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

The conversion of cyclohexane in most of the reaction systems that have been reported is all low (≤20%), and most of the catalysts supported by molecular sieves have the phenomenon of active component loss, which makes the repeatability poor. The highest conversion rate of c

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] Accurately weigh 0.2mmol copper pyrophosphate, 10ml acetonitrile, 8mmol cyclohexane, cyclohexane / hydrogen peroxide (30%) (molar ratio) = 1 / 3, stir and react at 65℃ for 20h, the conversion rate of cyclohexane The selectivity of cyclohexanol and cyclohexanone are 24.76% and 75.24%, respectively.

Embodiment 2

[0011] Accurately weigh 0.2mmol copper tripolyphosphate, 10ml acetonitrile, 8mmol cyclohexane, cyclohexane / hydrogen peroxide (30%) (molar ratio) = 1 / 3, stir and react at 65°C for 20h to convert cyclohexane The rate is 73.06%, the selectivity of cyclohexanol and cyclohexanone are 12.08% and 45.68%, respectively, and the selectivity of cyclohexene is 42.24%.

Embodiment 3

[0013] Accurately weigh 0.2mmol copper hexapolyphosphate, 10ml acetonitrile, 64mmol cyclohexane, cyclohexane / hydrogen peroxide (30% hydrogen peroxide) (molar ratio) = 1 / 1, stir and react at 65°C for 10 hours, cyclohexane The conversion rate is 55.44%, the selectivities of cyclohexanol and cyclohexanone are 10.18% and 35.47%, respectively, the selectivity of cyclohexene is 40.65%, and the others are 13.8%.

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PUM

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Abstract

A copper polyphosphate catalyst used for oxidizing cyclohexane by hydrogen peroxide is disclosed, which features high catalytic activity and no loss of active components in its application.

Description

Technical field [0001] The invention belongs to a new catalyst system for oxidizing cyclohexane by hydrogen peroxide. Background technique [0002] The selective oxidation of cyclohexane to cyclohexanol and cyclohexanone has always been a hotspot in production and research, because its reaction not only has important research significance for the activation of hydrocarbon saturated bonds, but its products are also very important industrial raw materials. The main intermediate for the synthesis of guitolactam, adipic acid and fine chemicals such as pharmaceuticals and coatings. In the traditional process of producing cyclohexanol and cyclohexanone, due to the stability of cyclohexane and the much more active alcohol and ketone than the raw material cyclohexane, the conversion rate of cyclohexane and the selectivity of alcohol and ketone are both low and the process is complicated. The pollution is serious, so it is necessary to continuously improve it. Its commonly used oxidants a...

Claims

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Application Information

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IPC IPC(8): B01J27/18C07C29/48C07C35/08
Inventor 杨向光熊永莲李静吴越
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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