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Rapid Phase Fluxionality as the Determining Factor in Activity and Selectivity of Highly Dispersed, Rh/Al 2 O 3 in deNO x Catalysis
Author(s) -
Newton Mark A.,
Dent Andrew J.,
DiazMoreno Sofia,
Fiddy Steven G.,
Evans John
Publication year - 2002
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/1521-3773(20020715)41:14<2587::aid-anie2587>3.0.co;2-0
Subject(s) - catalysis , selectivity , oxidizing agent , metal , phase (matter) , chemistry , oxide , inorganic chemistry , chemical engineering , organic chemistry , engineering
The nature of oxide‐supported metal catalysts may change in oxidizing conditions : Studies on the correlation between the Rh phase in the structure of the Rh/Al 2 O 3 catalyst and the catalytic performance for the reduction of NO by H 2 to N 2 (on reduced, metallic sites) and N 2 O (on oxidized sites) reveal that the phases of the supported metal species can be interconverted on time scales that can be deterministic in terms of the activity and selectivity of the catalysts.