naa a22 4500 510733433 CHVBK 20180411083001.0 cr unu---uuuuu 180411e20130101xx s 000 0 eng 10.1007/s12039-013-0365-2 doi (NATIONALLICENCE)springer-10.1007/s12039-013-0365-2 Structural and catalytic properties of a novel vanadium containing solid core mesoporous silica shell catalysts for gas phase oxidation reaction [Elektronische Daten] [N VENKATATHRI, VIJAYAMOHANAN PILLAI, A RAJINI, M NOOKA RAJU, I REDDY] A novel vanadium containing solid core mesoporous silica shell catalyst was synthesized with different Si/V ratios by sol-gel method under neutral conditions. The synthesized materials were characterized by various techniques and gas phase diphenyl methane oxidation reaction. The mesoporosity combined with microporosity are formed by incorporation of octadecyltrichloro silane and triethylamine in the catalyst and it was found out from E-DAX and BET—surface area analysis. The material was found to be nanocrystalline. Vanadium is present as V4 +  species in as-synthesized samples and convert to V5 +  on calcination. Most of the vanadium is present in tetrahedral or square pyramidal environment. Incorporation of vanadium in silica framework was confirmed by 29Si MAS NMR analysis. Among the various vanadium containing solid core mesoporous silica shell catalysts, the Si/V = 100 ratio exhibited maximum efficiency towards diphenyl methane to benzophenone gas phase reaction. The optimum condition required for maximum conversion and selectivity was found out from the catalytic studies. Graphical Abstract A novel vanadium containing solid core mesoporous silica shell catalyst was synthesized with different Si/V ratios by sol-gel method under neutral conditions. The synthesized materials were characterized by various techniques and are found to be excellent catalyst for the gas phase oxidation of diphenyl methane. Indian Academy of Sciences, 2013 Gas phase oxidation nationallicence vanadium containing solid core mesoporous silica shell nationallicence diphenylmethane nationallicence VENKATATHRI N. Department of Chemistry, National Institute of Technology, 506 004, Warangal, India aut PILLAI VIJAYAMOHANAN Physical and Materials Chemistry Division, National Chemical Laboratory, 411 008, Pune, India aut RAJINI A. Department of Chemistry, National Institute of Technology, 506 004, Warangal, India aut NOOKA RAJU M. Department of Chemistry, National Institute of Technology, 506 004, Warangal, India aut REDDY I. Department of Chemistry, National Institute of Technology, 506 004, Warangal, India aut Journal of Chemical Sciences Springer-Verlag 125/1(2013-01-01), 63-69 0974-3626 125:1<63 2013 125 12039 https://doi.org/10.1007/s12039-013-0365-2 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s12039-013-0365-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- VENKATATHRI N. Department of Chemistry, National Institute of Technology, 506 004, Warangal, India aut NATIONALLICENCE 700 1- PILLAI VIJAYAMOHANAN Physical and Materials Chemistry Division, National Chemical Laboratory, 411 008, Pune, India aut NATIONALLICENCE 700 1- RAJINI A. Department of Chemistry, National Institute of Technology, 506 004, Warangal, India aut NATIONALLICENCE 700 1- NOOKA RAJU M. Department of Chemistry, National Institute of Technology, 506 004, Warangal, India aut NATIONALLICENCE 700 1- REDDY I. Department of Chemistry, National Institute of Technology, 506 004, Warangal, India aut NATIONALLICENCE 773 0- Journal of Chemical Sciences Springer-Verlag 125/1(2013-01-01), 63-69 0974-3626 125:1<63 2013 125 12039 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer