TY - JOUR
T1 - Deposition of gold particles on mesoporous catalyst supports by sonochemical method, and their catalytic performance for CO oxidation
AU - Perkas, Nina
AU - Zhong, Ziyi
AU - Grinblat, Judit
AU - Gedanken, Aharon
PY - 2008/1
Y1 - 2008/1
N2 - Supported gold catalysts on the mesoporous (MSP) metal oxides were prepared by a one-step, ultrasound-assisted reduction method, and characterized by XRD, HRTEM, EDX, BET, and XPS analysis. Their catalytic activities were examined in the oxidation of CO. Compared to the Au/Fe2O3(MSP) catalyst, the Au/TiO2(MSP) and Au/Fe2O3- TiO2(MSP) catalysts exhibited higher catalytic activity in the oxidation of CO at low temperatures. The high catalytic activity of Au/TiO 2(MSP) was attributed to the metallic state of the gold nanoparticles, their small size (2-2.5 nm), and their high dispersion on the catalyst support.
AB - Supported gold catalysts on the mesoporous (MSP) metal oxides were prepared by a one-step, ultrasound-assisted reduction method, and characterized by XRD, HRTEM, EDX, BET, and XPS analysis. Their catalytic activities were examined in the oxidation of CO. Compared to the Au/Fe2O3(MSP) catalyst, the Au/TiO2(MSP) and Au/Fe2O3- TiO2(MSP) catalysts exhibited higher catalytic activity in the oxidation of CO at low temperatures. The high catalytic activity of Au/TiO 2(MSP) was attributed to the metallic state of the gold nanoparticles, their small size (2-2.5 nm), and their high dispersion on the catalyst support.
KW - CO oxidation
KW - Gold
KW - Mesoporous support
KW - Sonochemical reduction
UR - http://www.scopus.com/inward/record.url?scp=37849013776&partnerID=8YFLogxK
U2 - 10.1007/s10562-007-9257-8
DO - 10.1007/s10562-007-9257-8
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AN - SCOPUS:37849013776
SN - 1011-372X
VL - 120
SP - 19
EP - 24
JO - Catalysis Letters
JF - Catalysis Letters
IS - 1-2
ER -