TY - CHAP
T1 - ZrO2-supported Pt catalysts for water gas shift reaction and their non-pyrophoric property
AU - Chul Lee, Hyun
AU - Lee, Doohwan
AU - Young Lim, Ok
AU - Kim, Soonho
AU - Tae Kim, Yong
AU - Ko, Eun Yong
AU - Duck Park, Eun
PY - 2007
Y1 - 2007
N2 - Zirconia-supported platinum catalysts doped with cerium, nickel or cobalt (Pt-Ce/ZrO2, Pt-Ni/ZrO2, Pt-Co/ZrO2) were prepared by a single step co-impregnation method and their catalytic performance on the water gas shift reaction (WGS) were investigated. A Pt/Ce/ZrO2 catalyst was also prepared impregnating ZrO2 sequentially with Pt and Ce in order to compare the effects of impregnation methods on the catalytic activities of the final form of the catalysts. The results showed that the co-impregnated Pt-Ce/ZrO2 catalyst was highly active for the WGS reaction at low temperatures (250 °C, CO conversion of 95.1, feed composition of 10 vol CO, 10 vol CO2, and 80 vol H2 in dry base gas, H2O/CO=6, GHSV= 6000 h-1) and kept its activity even after air exposure in every cyclic test. The temperature programmed reduction (TPR) pattern of Pt-Ce/ZrO2 indicated that the low reduction temperature of Pt induced by Ce gave rise to high activity on the WGS reaction. This Pt-Ce/ZrO2 catalyst can be considered as an efficient catalyst for the WGS reaction, where high catalytic activity and non-pyrophoric property were required.
AB - Zirconia-supported platinum catalysts doped with cerium, nickel or cobalt (Pt-Ce/ZrO2, Pt-Ni/ZrO2, Pt-Co/ZrO2) were prepared by a single step co-impregnation method and their catalytic performance on the water gas shift reaction (WGS) were investigated. A Pt/Ce/ZrO2 catalyst was also prepared impregnating ZrO2 sequentially with Pt and Ce in order to compare the effects of impregnation methods on the catalytic activities of the final form of the catalysts. The results showed that the co-impregnated Pt-Ce/ZrO2 catalyst was highly active for the WGS reaction at low temperatures (250 °C, CO conversion of 95.1, feed composition of 10 vol CO, 10 vol CO2, and 80 vol H2 in dry base gas, H2O/CO=6, GHSV= 6000 h-1) and kept its activity even after air exposure in every cyclic test. The temperature programmed reduction (TPR) pattern of Pt-Ce/ZrO2 indicated that the low reduction temperature of Pt induced by Ce gave rise to high activity on the WGS reaction. This Pt-Ce/ZrO2 catalyst can be considered as an efficient catalyst for the WGS reaction, where high catalytic activity and non-pyrophoric property were required.
UR - http://www.scopus.com/inward/record.url?scp=35148814548&partnerID=8YFLogxK
U2 - 10.1016/S0167-2991(07)80132-7
DO - 10.1016/S0167-2991(07)80132-7
M3 - Chapter
AN - SCOPUS:35148814548
SN - 0444530789
SN - 9780444530783
T3 - Studies in Surface Science and Catalysis
SP - 201
EP - 206
BT - Natural Gas Conversion VIII
A2 - Noronha, Fabio
A2 - Schmal, Martin
A2 - Sousa-Aguiar, Eduardo
ER -