Dry reforming of methane by combined spark discharge with a ferroelectric

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Title:	Dry reforming of methane by combined spark discharge with a ferroelectric
Authors:	張木彬;Chung, Wei-Chieh;Chang, Moo-Been
Contributors:	工學院環境工程研究所
Keywords:	carbon dioxide;catalysts;catalytic activity;CCUS;dissociation;Dry reforming of methane;energy;Ferroelectric;global warming;greenhouse gas emissions;greenhouse gases;methane;Plasma catalysis;scanning electron microscopy;specific energy;Syngas;synthesis gas;temperature;X-ray photoelectron spectroscopy
Date:	2016-09-15
Issue Date:	2026-04-23 15:02:10 (UTC+8)
Publisher:	Elsevier Ltd.;Elsevier Ltd
Abstract:	摘要： [Display omitted] •Syngas generation with plasma catalysis system reaches 16.6mol/kWh.•Surface charge accumulation results in higher energy efficiency.•Synergy exists between plasma and ferroelectric. The increasing anthropogenic emission of greenhouse gases (GHGs) is causing global warming which is a matter of deep public concern. Dry reforming of methane (DRM) is an attractive means of reducing the emission of GHGs, because it can convert CO2 and CH4 into syngas. Non-thermal plasma has been investigated for use in DRM and the results demonstrate that plasma can convert CO2 and CH4 into syngas at a lower temperature than catalysis, but the specific energy is relatively high. Combining a catalyst with non-thermal plasma in hybrid system can produce various synergistic effects that reduce specific energy. In this work, BaZr0.05Ti0.95O3 (BZT) with a perovskite structure and ferroelectric property is packed into the plasma reactor to form a hybrid system. The syngas generation efficiency of BZT with a spark discharge reactor is investigated. The spark discharge reactor yields 49.4% conversion of CO2 and 52.5% conversion of CH4 and the BZT packed bed reactor yields 79.0% conversion of CO2 and 84.2% conversion of CH4. With respect to energy utilization, the BZT packed bed reactor has an specific energy of 0.218MJ/mol, which is 18.7% lower than that of the spark discharge reactor without a ferroelectric (0.268MJ/mol). Characterization of BZT reveals that the presence of BZT increases the charge density in the plasma reactor, favoring CO2 and CH4 dissociation. Also, SEM and XPS results show that BZT is modified with plasma, resulting in a positive synergy between the plasma and the ferroelectric. 出版者： Elsevier Ltd 出版日期： 2016-09-15 出處： Energy conversion and management, 2016-09, Vol.124, p.305-314 版權： 2016 Elsevier Ltd 識別號： ISSN: 0196-8904 識別號： EISSN: 1879-2227 識別號： DOI: 10.1016/j.enconman.2016.07.023
Appears in Collections:	[Graduate Institute of Environmental Engineering ] journal & Dissertation

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