Improving hydrogen yields, and hydrogen: Steam ratio in the chemical looping production of hydrogen using Ca2Fe2O5

Martin S.C. Chan, Wen Liu, Mohammad Ismail, Yanhui Yang, Stuart A. Scott, John S. Dennis

科研成果: 期刊稿件文章同行评审

83 引用 (Scopus)

摘要

A thermodynamic property of Ca2Fe2O5 was exploited to improve the efficiency of the steam-iron process to produce hydrogen. The ability of reduced Ca2Fe2O5 to convert a higher fraction of steam to hydrogen than chemically unmodified Fe was demonstrated in a packed bed. At 1123 K, the use of Ca2Fe2O5 achieved an equilibrium conversion of steam to hydrogen of 75%, in agreement with predicted thermodynamics and substantially higher than that theoretically achievable by iron oxide, viz. 62%. Furthermore, in Ca2Fe2O5, the full oxidation from Fe(0) to Fe(III) can be utilised for hydrogen production - an improvement from the Fe to Fe3O4 transition for unmodified iron. Thermodynamic considerations demonstrated in this study allow for the rational design of oxygen carriers in the future. Modifications of reactors to capitalise on this new material are discussed.

源语言英语
页(从-至)406-411
页数6
期刊Chemical Engineering Journal
296
DOI
出版状态已出版 - 15 7月 2016
已对外发布

指纹

探究 'Improving hydrogen yields, and hydrogen: Steam ratio in the chemical looping production of hydrogen using Ca2Fe2O5' 的科研主题。它们共同构成独一无二的指纹。

引用此