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首页> 外文期刊>International journal of hydrogen energy >Selective heating of Pd/AC catalyst in heterogeneous systems for the microwave-assisted continuous hydrogen evolution from organic hydrides: Temperature distribution in the fixed-bed reactor
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Selective heating of Pd/AC catalyst in heterogeneous systems for the microwave-assisted continuous hydrogen evolution from organic hydrides: Temperature distribution in the fixed-bed reactor

机译：微波辅助从有机氢化物中连续放出氢气的非均相系统中Pd / AC催化剂的选择性加热：固定床反应器中的温度分布

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摘要

Continuous hydrogen evolution occurred in near-quantitative yields from the dehydrogenation of an organic hydride (methylcyclohexane; MCH) through a microwave-assisted catalyzed process taking place in a fixed-bed reactor in the presence of Pd catalyst particles supported on activated carbon particulates (Pd/AC). Unlike conventional heating, the microwave heating method displayed a large temperature distribution experimentally observed along the vertical catalyst fixed-bed reactor attributed to the distribution of the microwave electric field, among other factors. A principal feature of the microwave-assisted method was the rapid heating response of the catalyst at low microwave power with considerable energy saving relative to conventional heating with a ceramics heater (2 min versus ca. 35-40 min; 33 W versus 139 W). A more uniform distribution of the microwave-generated heat and introduction of warmer liquid organic hydride (greater than ambient) should lead to significant improvement in process efficiency. (C) 2016 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
机译：在固定床反应器中，在载于活性炭颗粒（Pd）上的Pd催化剂颗粒的存在下，通过微波辅助催化过程对有机氢化物（甲基环己烷; MCH）进行脱氢，以接近定量的产率连续产生氢。 / AC）。与常规加热不同，除其他因素外，微波加热方法在垂直催化剂固定床反应器上实验观察到较大的温度分布，这归因于微波电场的分布。微波辅助方法的一个主要特点是，在低微波功率下，催化剂的快速加热响应相对于使用陶瓷加热器的传统加热（2分钟对约35-40分钟； 33 W对139 W）具有明显的节能效果。 。微波产生的热量的更均匀分布以及较热的液态有机氢化物（大于环境温度）的引入应导致工艺效率的显着提高。 （C）2016氢能出版物有限公司。由Elsevier Ltd.出版。保留所有权利。

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