Microwave Effects on Oxidative Coupling of Methane over Solid Oxygen Ion Conductors

Abstract

Abstract: The oxidative coupling of methane over 6-Bi₂O₃ phase solid oxygen ion conductors irradiated by microwave has been studied.Compared with the conventional heating mode, the use of microwave irradiation appears to have some beneficial effects: (1) at the same methane conversion level, the temperature of catalyst bed is much lower with the microwave irradiation than with the conventional heating mode, this is due to "microwave hot spot"effect; (2) the C₂ selectivity obtained with microwave irradiation is much higher than with conventional heating especially in the lower temperature range.This difference might arise from the reduction of oxidation products (ethane, ethylene) in the gas phase under mi-crowave irradiation.

Key words: Microwave, Oxidative coupling of methane, Solid oxygen ion conductor

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CHEN Chang-Lin, HONG Pin-Jie, DAI Shu-Shan, ZHANG Cheng-Cong, YANG Xiao-Yun. Microwave Effects on Oxidative Coupling of Methane over Solid Oxygen Ion Conductors[J]. Chem. J. Chinese Universities, 1997, 18(1): 99.

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Microwave Effects on Oxidative Coupling of Methane over Solid Oxygen Ion Conductors

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