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Characterization studies of calcined, promoted and non‐promoted methanol‐steam reforming catalysts
Author(s) -
Idem Raphael O.,
Bakhshi Narendra N.
Publication year - 1996
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450740214
Subject(s) - calcination , catalysis , steam reforming , methanol , chemistry , nuclear chemistry , inorganic chemistry , organic chemistry , hydrogen production
Various promoted methanol‐steam reforming catalysts were prepared by incorporating Mn, Cr and Zn promoters into two dried corprecipitated Cu‐Al catalyst precursors containing 24.1 and 27.8 mass% Cu, calcined at 700°C, and then subjected to various activation treatments. Both the calcined and activated catalysts were thoroughly characterized using reaction studies, ICP—AES, XRD and TPR techniques. Results showed that in addition to Cu 2 O, CuO, Al 2 O 3 and CuAl 2 O 4 species present in all calcined catalysts, calcined Zn‐promoted catalysts contained ZnO and ZnAl 2 O 4 species, whereas calcined Mn‐ and Cr‐promoted catalysts contained CuMnO 2 and Mn 2 O 3 , and Cu 2 Cr 2 O 4 and Cr 2 O 3 species, respectively. The nature and amounts of active sites generated on activated catalysts for the methanol‐steam reforming reaction strongly depended not only on the promoter type and concentration but also on the activation method.