TY - JOUR
T1 - N-Pentane isomerization over platinum-promoted W/Zr mixed oxides supported on mesoporous silica
AU - Li, Tao
AU - Wong, She Tin
AU - Chao, Man Chien
AU - Lin, Hong Ping
AU - Mou, Chung Yuan
AU - Cheng, Soofin
N1 - Funding Information:
We are grateful for the financial supports from China Petroleum Corporation and the National Science Council of Taiwan.
PY - 2004/4/30
Y1 - 2004/4/30
N2 - W/Zr mixed oxides supported on various porous silica materials, namely SBA-15, MCM-41 and silica gel, were prepared. Their acidities and catalytic activities in n-pentane isomerization were examined. For the mesoporous silica, SBA-15 was found to retain the ordered meso-structure better than MCM-41 after loading with W/Zr mixed oxide. TEM photographs showed that tungstated zirconia was dispersed inside the mesoporous channels of SBA-15, and that the surface area and pore volume decreased with the loading. The SBA-15 supported WO 3/ZrO2 materials promoted with Pt were highly catalytic efficient in n-pentane isomerization with a very high iso-pentane selectivity. In contrast, MCM-41 and silica gel supported WO3/ZrO2 showed lower catalytic activities. The optimal activity was observed on SBA-15 with 1%Pt/20%WO3/40%ZrO2. The mesoporous silica supports played an important role in stabilizing the mixed oxide catalyst since the catalytic activity decayed less markedly with time-on-stream on the supported catalysts.
AB - W/Zr mixed oxides supported on various porous silica materials, namely SBA-15, MCM-41 and silica gel, were prepared. Their acidities and catalytic activities in n-pentane isomerization were examined. For the mesoporous silica, SBA-15 was found to retain the ordered meso-structure better than MCM-41 after loading with W/Zr mixed oxide. TEM photographs showed that tungstated zirconia was dispersed inside the mesoporous channels of SBA-15, and that the surface area and pore volume decreased with the loading. The SBA-15 supported WO 3/ZrO2 materials promoted with Pt were highly catalytic efficient in n-pentane isomerization with a very high iso-pentane selectivity. In contrast, MCM-41 and silica gel supported WO3/ZrO2 showed lower catalytic activities. The optimal activity was observed on SBA-15 with 1%Pt/20%WO3/40%ZrO2. The mesoporous silica supports played an important role in stabilizing the mixed oxide catalyst since the catalytic activity decayed less markedly with time-on-stream on the supported catalysts.
UR - https://www.scopus.com/pages/publications/1842457647
UR - https://www.scopus.com/pages/publications/1842457647#tab=citedBy
U2 - 10.1016/j.apcata.2003.11.006
DO - 10.1016/j.apcata.2003.11.006
M3 - Article
AN - SCOPUS:1842457647
SN - 0926-860X
VL - 261
SP - 211
EP - 219
JO - Applied Catalysis A: General
JF - Applied Catalysis A: General
IS - 2
ER -