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Ceria as a Thermochemical Reaction Medium for Selectively Generating Syngas or Methane from H 2 O and CO 2
Author(s) -
Chueh William C.,
Haile Sossina M.
Publication year - 2009
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.200900138
Subject(s) - syngas , catalysis , methane , chemistry , metal , combinatorial chemistry , chemical engineering , inorganic chemistry , organic chemistry , engineering
Doped CeO 2 with a low specific surface area is thermochemically cycled between MO 2 and MO 2− δ using H 2 O and CO 2 as oxidants. The system rapidly and selectively produces syngas in the absence of a metal catalyst, and CH 4 in the presence of Ni. The Ni catalyst, which permits intermediate C to form on its surface, is proposed to shift the product from syngas to CH 4 .
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