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Production method of methyl cyclohexanone

A technology of methylcyclohexanone and production method, applied in the production field of methylcyclohexanone, can solve problems such as unreported utilization of oligomers, and achieve the effects of remarkable economic benefit, good selectivity and simple production process

Inactive Publication Date: 2018-11-23
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the utilization of oligomers in X oil has not been reported

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] In the fixed bed reactor, the catalyst is Cu-Si catalyst, the Cu content is 28.6%, the reaction temperature is 230°C, the methyl cyclohexanol content in X oil is 1.8%, and the liquid space velocity is 1.0h -1 , The reaction pressure is 0.1 MPa. The conversion rate of methylcyclohexanol in X-oil is 67.8%, and the selectivity of methylcyclohexanone is 94.4%.

Embodiment 2

[0017] In the fixed bed reactor, the catalyst is Cu-Si catalyst, the Cu content is 28.6%, the reaction temperature is 210°C, the methylcyclohexanol content in X-oil is 1.8%, and the liquid space velocity is 0.8h -1 , The reaction pressure is 0.2 MPa. The conversion rate of methylcyclohexanol in X-oil is 56.3%, and the selectivity of methylcyclohexanone is 95.2%.

Embodiment 3

[0019] In the fixed bed reactor, the catalyst is Cu-Si catalyst, the Cu content is 28.6%, the reaction temperature is 240°C, the methylcyclohexanol content in X-oil is 1.8%, and the liquid space velocity is 1.0h -1 , The reaction pressure is 0.1MPa. The conversion rate of methylcyclohexanol in X-oil is 69.5%, and the selectivity of methylcyclohexanone is 91.7%.

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PUM

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Abstract

The invention belongs to the technical field of chemical production, and provides a production method of methyl cyclohexanone. X-oil in caprolactam production waste liquid is used as raw materials; ina fixed bed reactor, a Cu series catalyst is used; catalytic dehydrogenation reaction is performed under the conditions of certain temperature, liquid hourly space velocity and reaction pressure; methyl cyclohexanone products can be obtained through separation. The methylcyclohexanol conversion rate in the raw material X-oil is high; the methyl cyclohexanone selectivity is high. The production process is simple; the catalyst dehydrogenation temperature is low.

Description

technical field [0001] The invention belongs to the technical field of chemical production, and in particular relates to a production method of methylcyclohexanone. Background technique [0002] Methylcyclohexanone is an important organic solvent and intermediate of organic chemical industry, and it is widely used in the synthesis of medicine, perfume and organic fine chemical industry. At present, the industrial production of methylcyclohexanone uses toluene as raw material, and the whole production process is relatively complicated. There are also bibliographical reports using alkoxy-substituted metal manganese porphyrins as catalysts and air as an oxygen source to selectively oxidize methylcyclohexane to obtain a mixture of methylcyclohexanol and methylcyclohexanone. The conversion rate of is only 20%, the total selectivity of methylcyclohexanol and methylcyclohexanone is 70%. [0003] In the process of cyclohexane oxidation to cyclohexanone and cyclohexanol, there is a...

Claims

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Application Information

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IPC IPC(8): C07C47/32C07C45/00
CPCC07C45/002C07C47/32
Inventor 张皓孙中华孙远龙李婷婷
Owner CHINA PETROLEUM & CHEM CORP
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