TY - JOUR
T1 - Chromium addition to alumina-supported platinum catalysts and effect on catalytic activity in methane combustion
AU - Mardwita,
AU - Matsune, Hideki
AU - Takenaka, Sakae
AU - Kishida, Masahiro
N1 - Copyright:
Copyright 2012 Elsevier B.V., All rights reserved.
PY - 2012
Y1 - 2012
N2 - We investigated the addition of chromium to alumina-supported Pt catalysts and its effect on catalytic activity in methane combustion. The Pt and Cr binary alumina-supported catalysts exhibited much higher activity than those without Cr. Alumina-supported Cr catalysts contain two chromium species, Cr 3+ and Cr 6+. From XPS analysis, it was found that more Cr 6+ species existed in the binary catalysts than in the single alumina-supported Cr catalysts. Pt species in the binary catalysts may promote Cr oxidation. Since Cr 6+ species are known to be more active than Cr3ff species in oxidation reactions, the increase in Cr 6+ in the binary catalysts may contribute to their higher activity compared with the Pt/Al 2O 3 catalyst.
AB - We investigated the addition of chromium to alumina-supported Pt catalysts and its effect on catalytic activity in methane combustion. The Pt and Cr binary alumina-supported catalysts exhibited much higher activity than those without Cr. Alumina-supported Cr catalysts contain two chromium species, Cr 3+ and Cr 6+. From XPS analysis, it was found that more Cr 6+ species existed in the binary catalysts than in the single alumina-supported Cr catalysts. Pt species in the binary catalysts may promote Cr oxidation. Since Cr 6+ species are known to be more active than Cr3ff species in oxidation reactions, the increase in Cr 6+ in the binary catalysts may contribute to their higher activity compared with the Pt/Al 2O 3 catalyst.
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U2 - 10.1252/jcej.12we025
DO - 10.1252/jcej.12we025
M3 - Article
AN - SCOPUS:84864319986
VL - 45
SP - 493
EP - 497
JO - Journal of Chemical Engineering of Japan
JF - Journal of Chemical Engineering of Japan
SN - 0021-9592
IS - 7
ER -