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Syngas Production from Chemical‐Looping Reforming of Methane Using Iron‐Doped Cerium Oxides
Author(s) -
Yan Yuyuan,
Xu Long,
Wang Li,
Fu Ke,
Tang Mingchen,
Fan Maohong,
Ma Xiaoxun
Publication year - 2018
Publication title -
energy technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.91
H-Index - 44
eISSN - 2194-4296
pISSN - 2194-4288
DOI - 10.1002/ente.201700884
Subject(s) - syngas , cerium oxide , chemical looping combustion , methane , oxygen , cerium , inorganic chemistry , adsorption , chemistry , iron oxide , materials science , oxide , isothermal process , catalysis , chemical engineering , metallurgy , organic chemistry , physics , engineering , thermodynamics
Abstract A series of iron‐doped cerium oxide oxygen carriers Ce x Fe 10−x O δ (x=9, 7, 5) were prepared by citric acid sol‐gel method and characterized by X‐ray powder diffraction (XRD), Brunauer Emmett Teller (BET), Temperature‐Programmed Reduction, and Oxidation (H 2 ‐TPR/O 2 ‐TPO). The reaction activity and cycle stability of oxygen carriers with methane at 850 °C were investigated in a fixed bed reactor and the capacity of oxygen storage was studied by a chemical adsorption instrument. Results showed that methane conversion and oxygen storage capacity of oxygen carriers were improved significantly because of the doping iron oxide. For thermostatic cycle, Ce 7 Fe 3 O δ showed considerable durability. A three stages isothermal reaction mechanism was proposed.