Durability Test for 1 kw Ethanol Reforming System with Catalyst

1kW乙醇重組產氫系統及觸媒耐久性測試

趙裕(Yu Chao) ； 李灝銘(How-Ming Lee) ； 張木彬(Moo-Been Chang)

《中國機械工程學刊》 32卷2期 (2011/04) Pp. 173-180

https://doi.org/10.29979/JCSME.201104.0010

摘要

核研所針對1kW固態氧化物燃料電池(SOFC)開發大型乙醇重組系統，將乙醇經自熱重組反應轉化為富氫氣體，提供SOFC發電所需。本文以此大型重組系統進行四種貴金屬觸媒測試，並以其中二種觸媒Pt-Pd-Rh/γ-Al2O3及Rh/γ-Al2O3-CeO2-ZrO2進行26天耐久性測試。前者初期活性很好，乙醇轉化率可達97%，但是隨即逐漸衰退，到第26天時轉化率僅剩50%。後者的高活性可以維持約16天，之後緩慢衰退，轉化率最後約為85%。結果顯示添加二氧化鈰(CeO2)及二氧化鋯(ZrO2)等促進劑，可以穩定觸媒活性及延長壽命。

並列摘要

Institute of Nuclear Energy Research (INER) has successfully developed a commercial-scale ethanol reforming system, which converts ethanol into hydrogen-rich gases, via autothermal reaction mechanism. In this study, four kinds of noble metal catalyst were extensively investigated with the ethanol reforming system. Two of the four catalysts, Pt-Pd-Rh/γ-Al2O3 and Rh/γ-Al2O3-CeO2-ZrO2, had been conducted in a 26-day long-time test. The Pt-Pd-Rh/γ-Al2O3 catalyst showed high catalytic activity and achieved an ethanol conversion of 97% in the early stage; but deactivated with reaction time and finally achieved a conversion of only 50% at 26(superscript th) day. The Rh/γ-Al2O3-CeO2-ZrO2 catalyst achieved and maintained high ethanol conversion for the first 16 days, then gradually decreased and achieved a conversion efficiency of 85% at 26(superscript th) day.

並列關鍵字

ethanol reforming ； hydrogen ； durability test