期刊
CARBON CAPTURE SCIENCE & TECHNOLOGY
卷 1, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.ccst.2021.100006
关键词
Hydrogen; Hydrocarbon; Chemical looping; Water splitting; Oxygen carrier
资金
- Shanghai outstanding academic leaders plan of the Shanghai Science and Technology Committee [21XD1402400]
- National Natural Science Foundation of China [51876130, 91434129, 51476022]
Chemical looping water splitting (CLWS) process using metal oxides or perovskites as oxygen carriers is capable of producing pure H 2 efficiently, simply, and flexibly. Efforts have been made to improve the redox activity and stability of OCs for hydrogen production from CLWS. Fe-based OCs with various additives are attractive for the CLWS process, but challenges for the development of OCs still exist.
Chemical looping water splitting (CLWS) process using metal oxides or perovskites as oxygen carriers (OCs), is capable of producing pure H 2 in an efficient, simple, and flexible way. The OCs are first reduced by hydrocarbon fuels and then oxidized by steam in a cyclic way. After the condensation of the gaseous mixture of steam and H 2 from the oxidation step, pure H 2 is obtained. In recent years, great efforts for CLWS have been made to improve the redox activity and stability of OCs. In this paper, the development of the OCs for hydrogen production from CLWS were discussed. Effects of supports and additives on the performances of OCs were compared based on redox reactions in CLWS. Fe-based OCs with CeO2, Al2O3, ZrO2, CuO, MoO3, Rh etc. are very attractive for the CLWS process. Issues and challenges for the development of OCs were analyzed.
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