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Kinetic Investigation of Energy Synergy in the Pulsed Bipolar Plasma-Catalytic Reaction of Organic Waste Gases Over Mullite-Supported Perovskite Catalysts
Plasma Chemistry and Plasma Processing ( IF 2.6 ) Pub Date : 2020-04-20 , DOI: 10.1007/s11090-020-10081-3
Chen-Jui Liang , Zong-Yi Lee

Abstract A pulsed bipolar plasma-catalytic system was used to treat organic waste gases over perovskite catalysts. The characteristics of the catalyst impedances, plasma discharge, and in situ optical emission spectra were represented for describing the plasma and catalyst actions. Compared with the reaction without plasma, the temperature at 99% conversion of butanone oxidation over La 0.7 Sr 0.3 MnO 3 /mullite catalyst at SED of 3.340 kJ L −1 reduced from 320 to 198 °C for the reaction with plasma. The maximum residual amounts of toluene and butanone in ozone after plasma catalysis were 0.30 and 0.52 ppmv, respectively. No organic by-products were observed in the plasma-catalysis. A synergy factor in the terms of the temperature was defined for the synergistic catalysis. Plasma-dissociation and synergistic catalysis were integrated into the plasma-catalytic reaction to establish the theoretical formula of the reaction by introducing the synergy factor. The results demonstrate that this formula can successfully interpret the behaviors of plasma-catalysis. Graphic Abstract

中文翻译:

莫来石负载钙钛矿催化剂上有机废气脉冲双极等离子体催化反应中能量协同的动力学研究

摘要 采用脉冲双极等离子体催化系统处理钙钛矿催化剂上的有机废气。表征了催化剂阻抗、等离子体放电和原位光发射光谱的特性以描述等离子体和催化剂作用。与没有等离子体的反应相比,在La 0.7 Sr 0.3 MnO 3 /莫来石催化剂上,在3.340 kJ L -1 的SED下,丁酮氧化99%转化率时的温度从320°C降低到198°C,用于与等离子体反应。等离子体催化后臭氧中甲苯和丁酮的最大残留量分别为0.30和0.52 ppmv。在等离子体催化中没有观察到有机副产物。对于协同催化,定义了温度方面的协同因子。将等离子体解离和协同催化结合到等离子体催化反应中,通过引入协同因子建立反应的理论公式。结果表明,该公式可以成功地解释等离子体催化的行为。图形摘要
更新日期:2020-04-20
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