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Determination of active metal sites in metal oxide catalysts by selective gas chemisorption
Author(s) -
Parkash S.
Publication year - 1982
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.5450600105
Subject(s) - carbon monoxide , chemisorption , catalysis , inorganic chemistry , hydrogen , chemistry , ethylene , metal , monoxide , oxide , organic chemistry
Chemisorption behavior of hydrogen, carbon monoxide, nitric oxide and ethylene on three iron and three cobalt moly catalysts has been investigated in an attempt to determine active metal sites. Mode of adsorption for nitric oxide and of ethylene whether of associative or dissociative nature on the metal surface has been discussed in relation to hydrogen and carbon monoxide chemisorption. There appears to be a definite correlation between the amounts of hydrogen and carbon monoxide (V H /V CO = 1), between carbon monoxide and nitric oxide (V NO /V CO = 1.2) as well as between carbon monoxide and ethylene (C CO /V C 2 H 4= 2) chemisorb. ed. The data suggest that the selective chemisorption behavior of nitric oxide and of ethylene should provide a suitable method to determine active metal sites in metal oxide catalysts.