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Novel Oxides for Cycled Hydrogen Production from Methane and Water Using a Temperature Swing
Author(s) -
Kang Z.,
Wang Z.L.
Publication year - 2003
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200390121
Subject(s) - materials science , catalysis , hydrogen , hydrogen production , methane , inorganic chemistry , cerium oxide , chemical engineering , cerium , oxide , praseodymium , coke , doping , metallurgy , chemistry , organic chemistry , engineering , optoelectronics
A group of iron‐doped novel oxides of cerium, terbium, and praseodymium are reported to produce hydrogen at relatively low temperatures through a cycling two‐step reaction process without catalyst. Iron doping in the oxides not only stimulates surface activity, but also lowers the reduction temperature of water vapor (to ∼ 375 °C) while preserving efficient hydrogen production. The two‐step reactions eliminate the problem of catalyst deactivation due to coke. Thus the cycle can be carried out continuously without replacing oxide.