Device for promoting dehydrogenation of methylcyclohexane at low temperature under assistance of electric field, catalyst and preparation method of catalyst

By using an electric field-assisted low-temperature methylcyclohexane dehydrogenation device and catalyst, combined with thermal and electric fields, the reaction temperature is reduced, solving the problems of high energy consumption and catalyst deactivation caused by high-temperature dehydrogenation, and achieving low-temperature high-efficiency conversion and catalyst stability.

CN121775779APending Publication Date: 2026-04-03JILIN UNIVERSITY
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Patent Information

Application Number
CN202610065876.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-01-19
Publication Date
2026-04-03

AI Technical Summary

Technical Problem

In the existing technology, the dehydrogenation reaction of methylcyclohexane requires high temperature (usually >400℃), which leads to high energy consumption, easy sintering of catalyst and carbon deposition and deactivation. Furthermore, there are no systematic reports on the combination of external electric field and low temperature dehydrogenation reaction.

Method used

An apparatus and catalyst for promoting the dehydrogenation of methylcyclohexane using an electric field-assisted low temperature method are described. By applying an external electric field to the catalyst bed and combining it with a thermal field, the reaction temperature is reduced to 200-300°C. The catalyst prepared using a composite support is used to improve metal dispersion and electrical properties, thereby promoting catalyst stability.

Benefits of technology

Achieving efficient conversion of methylcyclohexane under low-temperature conditions significantly reduces energy consumption, inhibits carbon deposition, extends catalyst life, and is easily integrated with existing reactors, providing an energy-saving retrofit pathway.

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Abstract

The invention discloses a device for promoting methylcyclohexane dehydrogenation at low temperature under the assistance of an electric field, a catalyst and a preparation method thereof, and belongs to the crossing field of catalytic chemistry, hydrogen energy technology and reaction engineering. The device is composed of a gas supply system, an electric field assisted methyl cyclohexane dehydrogenation system and a product gas analysis system which are connected through a gas pipeline. The catalyst is obtained by mechanically mixing silicon carbide powder and a platinum-loaded metal oxide modified alumina carrier, tabletting and molding, crushing and screening. The catalyst is arranged in the quartz reaction tube and is connected with the high-voltage power supply through the positive electrode and the negative electrode, and the quartz reaction tube is arranged in the high-temperature reaction furnace; by introducing an external electric field, apparent activation energy of methyl cyclohexane dehydrogenation can be remarkably reduced through a Joule heating effect and a surface electron effect, and energy consumption is greatly reduced; according to the method, hydrogen production through decomposition of methyl cyclohexane can be achieved at low temperature, operation is remarkably reduced, the operation cost is remarkably reduced, and an innovative solution is provided for achieving green hydrogen energy economy.
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