Synthesis, characterization and catalytic application of Cr–SBA-1 mesoporous molecular sieves

2007 ◽  
Vol 261 (2) ◽  
pp. 225-231 ◽  
Author(s):  
Xinhong Zhao ◽  
Xiaolai Wang
Keyword(s):  
Molecular Sieves ◽  
Mesoporous Molecular Sieves ◽  
Catalytic Application

Synthesis and Catalytic Application of Mesoporous Molecular Sieves MCM-41 Containing Niobium and Tantalum

2007 ◽  
Vol 124-126 ◽  
pp. 1761-1764 ◽  
Author(s):  
Hun Jung ◽  
Kwang Deog Jung ◽  
Oh Shim Joo ◽  
Sun Jin Kim
Keyword(s):  
Vapor Phase ◽  
Molecular Sieves ◽  
Catalytic Performance ◽  
Acid Sites ◽  
Weak Acid ◽  
Beckmann Rearrangement ◽  
Mesoporous Molecular Sieves ◽  
Cyclohexanone Oxime ◽  
Catalytic Application ◽  
Mcm 41

Niobium- and tantalum-containing mesoporous molecular sieves MCM-41 have been synthesized, and applied as a catalyst for vapor phase Beckmann rearrangement of cyclohexanone oxime to ε-caprolactam. NbMCM-41 catalyst exhibited high catalytic performance in the vapor phase Beckmann rearrangement of cyclohexanone oxime. The oxime conversions were almost 100% and the lactam selectivities were around 80%. The lactam selectivities of NbMCM-41 catalyst were higher than those of AlMCM-41 catalyst. However, TaMCM-41 catalyst exhibited lower catalytic performance than AlMCM-41 catalyst, and it was fast deactivated with time. These results may be due to the acidity difference among the catalysts. The results from NH3-TPD showed that NbMCM-41 catalyst possessed weak and medium acid sites, while TaMCM-41 catalyst possessed only very weak acid sites. AlMCM-41 catalyst also exhibited only weak acid sites.

Synthesis, characterization and catalytic application of MCM-41 mesoporous molecular sieves containing Zn and Al

2003 ◽  
Vol 242 (2) ◽  
pp. 347-364 ◽  
Author(s):  
M Selvaraj ◽  
A Pandurangan ◽  
K.S Seshadri ◽  
P.K Sinha ◽  
K.B Lal
Keyword(s):  
Molecular Sieves ◽  
Mesoporous Molecular Sieves ◽  
Catalytic Application ◽  
Mcm 41

Cytochrome c immobilization into mesoporous molecular sieves

2000 ◽  
Vol 10 (5) ◽  
pp. 453-469 ◽  
Author(s):  
Lisa Washmon-Kriel ◽  
Victoria L Jimenez ◽  
Kenneth J Balkus
Keyword(s):  
Cytochrome C ◽  
Molecular Sieves ◽  
Mesoporous Molecular Sieves

Synthesis and Characterization of V-SBA-1 Cubic Mesoporous Molecular Sieves

2001 ◽  
Vol 13 (1) ◽  
pp. 208-212 ◽  
Author(s):  
Lian-Xin Dai ◽  
Kenji Tabata ◽  
Eiji Suzuki ◽  
Takashi Tatsumi
Keyword(s):  
Molecular Sieves ◽  
Mesoporous Molecular Sieves ◽  
Synthesis And Characterization ◽  
Cubic Mesoporous
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