TY - JOUR
T1 - Novel method for insertion of Pt/CeZrO2 nanoparticles into mesoporous SBA-16 using hydrothermal treatment
AU - Yotou, Hiroaki
AU - Okamoto, Takumi
AU - Ito, Miho
AU - Sekino, Tohru
AU - Tanaka, Shun Ichiro
PY - 2013/5/10
Y1 - 2013/5/10
N2 - An investigation was performed to evaluate the possibility of using hydrothermal treatment for inserting Pt/CeZrO2 nanoparticles into the mesopores of the previously reported SBA-16 mesoporous silica. The results showed that the Pt/CeZrO2 nanoparticles were successfully inserted into the mesopores of SBA-16 by the hydrothermal treatment, and the highly ordered mesostructure of SBA-16 was retained after the insertion of the nanoparticles. The obtained material was used as a catalyst for the CO oxidation reaction. The catalytic activity and thermal stability of Pt/CeZrO2, inserted via hydrothermal treatment, were higher than those of the mixture of Pt/CeZrO2 and SBA-16. Specifically, the temperature at which 50% CO oxidation was achieved after the catalyst was annealed at 800 C was 290 C for the sample prepared via hydrothermal treatment at 140 C. This temperature at which 50% CO oxidation was achieved is significantly lower than 480 C required for the catalyst prepared via simple mixing.
AB - An investigation was performed to evaluate the possibility of using hydrothermal treatment for inserting Pt/CeZrO2 nanoparticles into the mesopores of the previously reported SBA-16 mesoporous silica. The results showed that the Pt/CeZrO2 nanoparticles were successfully inserted into the mesopores of SBA-16 by the hydrothermal treatment, and the highly ordered mesostructure of SBA-16 was retained after the insertion of the nanoparticles. The obtained material was used as a catalyst for the CO oxidation reaction. The catalytic activity and thermal stability of Pt/CeZrO2, inserted via hydrothermal treatment, were higher than those of the mixture of Pt/CeZrO2 and SBA-16. Specifically, the temperature at which 50% CO oxidation was achieved after the catalyst was annealed at 800 C was 290 C for the sample prepared via hydrothermal treatment at 140 C. This temperature at which 50% CO oxidation was achieved is significantly lower than 480 C required for the catalyst prepared via simple mixing.
KW - CO oxidation catalyst
KW - Hydrothermal
KW - Insertion
KW - Mesoporous silica
KW - Pt-loaded CeZrO
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U2 - 10.1016/j.apcata.2013.03.025
DO - 10.1016/j.apcata.2013.03.025
M3 - Article
AN - SCOPUS:84877077596
VL - 458
SP - 137
EP - 144
JO - Applied Catalysis A: General
JF - Applied Catalysis A: General
SN - 0926-860X
ER -