Reaction characteristics of two-step methane reforming over a Cu-ferrite/Ce-ZrO2 medium

被引：51
作者：
Cha, Kwang-Seo [1 ]
Kim, Hong-Soon [1 ]
Yoo, Byoung-Kwan [1 ]
Lee, Young-Seak [1 ]
Kang, Kyoung-Soo [2 ]
Park, Chu-Sik [2 ]
Kim, Young-Ho [1 ]
机构：
[1] Chungnam Natl Univ, Dept Fine Chem Engn & Appl Chem, BK21 E2M, Taejon 305764, South Korea
[2] Korea Inst Energy Res, Hydrogen Energy Res Ctr, Taejon 305343, South Korea
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2009年 / 34卷 / 04期
关键词：
Thermochemical methane reforming; Ferrite; Copper; Carbon deposition; Ceria; CO-RICH SYNGAS; IRON-OXIDE; NI-CE-ZRO2; CATALYSTS; STEPWISE PRODUCTION; SOLID-SOLUTIONS; SYNTHESIS GAS; REDOX SYSTEM; HYDROGEN; REDUCTION; STORAGE;
D O I：
10.1016/j.ijhydene.2008.12.063
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Methane was reformed over a Cu-ferrite/ZrO2 medium in a two-step process, consisting of a syn-gas production step and a water-splitting step. In the syn-gas production step, increase in Cu content in the CuxFe3-xO4/ZrO2 medium suppressed carbon deposition and enhanced the reaction rate for stoichiometries of x <= 0.7. In the water-splitting step, the addition of Cu promoted the gasification of the deposited carbon. Furthermore, the addition of Ce as a binder in the Cu0.7Fe2.3O4/Ce-ZrO2 medium also improved reactivity in the syn-gas production step and yielded the highest reactivity when the molar ratio of Ce/Zr was 3/1. As a result of the co-addition of Cu and Ce, the Cu0.7Fe2.3O4/Ce-ZyO(2) medium showed high durability, with a constant evolution of the synthesis gas and hydrogen in ten repeated cycles. It is thus expected that the Cu-ferrite/Ce-ZrO2 medium is favourable for two-step methane reforming. (C) 2008 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.
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页码：1801 / 1808
页数：8
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