01843nas a2200229   4500008004100000022001400041245008100055210006900136260007500205300001200280490000700292520101700299653001901316653001601335653002901351653003901380100001601419700002401435700002201459700001801481856011401499       2008                        eng d  a1571-101300aPeriodic mesoporous silicas and organosilicas: an overview towards catalysis0 aPeriodic mesoporous silicas and organosilicas an overview toward  a233 SPRING ST, NEW YORK, NY 10013 USAbSPRINGER/PLENUM PUBLISHERScDEC  a266-2820 v123 a<p>Micelle-templated mesoporous and organic-inorganic hybrid mesoporous materials are important in many fields of material research, especially for hosting catalysts in confined space. Among this class, the recent discovery of periodic mesoporous organosilicas (PMOs) represent an exciting new group of organic-inorganic nanocomposites targeted for a broad range of applications ranging from catalysis to microelectronics. Compared to the earlier generation of organic-inorganic hybrid mesoporous samples, obtained by the cocondensation reaction or by the grafting reaction, PMOs represent the right combination of organic and inorganic groups in the frame wall positions. This article reviews the current state of art in organic-inorganic hybrid mesoporous material research with special emphasis over periodic mesoporous organosilica materials having various redox centers (Ti, V, Cr) suitable for oxidation reactions as well as acidic sites (Al, -SO(3)H) for the organic transformation of bulky molecules.</p>10aAcid catalysis10aepoxidation10aMesoporous organosilicas10aOrganic-inorganic hybrid materials1 aShylesh, S.1 aSamuel, Prinson, P.1 aSisodiya, Sheetal1 aSingh, A., P.  uhttps://library.ncl.res.in/content/periodic-mesoporous-silicas-and-organosilicas-overview-towards-catalysis-001728nas a2200241   4500008004100000022001400041245015700055210006900212260007300281300001200354490000700366520082600373653001601199653002701215653001501242653001701257653001401274653001101288100002201299700001601321700001801337856013101355       2011                        eng d  a1566-736700aTin incorporated periodic mesoporous organosilicas (Sn-PMOs): synthesis, characterization, and catalytic activity in the epoxidation reaction of olefins0 aTin incorporated periodic mesoporous organosilicas SnPMOs synthe  aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcMAR  a629-6330 v123 a<p>Tin incorporated mesoporous organosilicas (Sn-PMO) having uniform hexagonal arrangements were prepared using alkyl trimethylammonium bromide surfactants under basic reaction conditions. Characterization techniques revealed that the structural ordering, morphology, and the percentage of tin incorporation depend critically on the hydrophobic chain length of surfactants. The Sn-PMO samples are thermally stable up to 500 degrees C under air atmosphere and were hydrothermally stable up to 100 h in boiling water. The organotinsilicates showed excellent catalytic activity and reusability in the epoxidation of norbornene and ciscyclooctene than an Sn-MCM-41 due to organic groups in the frame wall positions and the better accessibility of reactants to the active sites. (C) 2010 Elsevier B.V. All rights reserved.</p>10aepoxidation10aHydrothermal stability10aMesoporous10aOrganosilica10aSn-MCM-4110aSn-PMO1 aSisodiya, Sheetal1 aShylesh, S.1 aSingh, A., P.  uhttps://library.ncl.res.in/content/tin-incorporated-periodic-mesoporous-organosilicas-sn-pmos-synthesis-characterization-and-001808nas a2200265   4500008004100000022001400041245013000055210006900185260007300254300001000327490000700337520084900344653002101193653001801214653001701232653001401249653002401263100002201287700001701309700003501326700001401361700002201375700002201397856012301419       2012                        eng d  a1566-736700aCovalently anchored ruthenium-phosphine complex on mesoporous organosilica: catalytic applications in hydrogenation reactions0 aCovalently anchored rutheniumphosphine complex on mesoporous org  aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcAUG  a22-270 v253 a<p>New heterogeneous catalysts for alkene hydrogenation reactions were prepared by the immobilization of trimethoxysilane functionalized triphenylphosphine eta(6)-p-cymene ruthenium complex on mesoporous organosilica (PMO-Ru). Characterization techniques confirmed the structural integrity of the organosilica material and proved the successful anchoring of ruthenium complex. Catalytic activity and stability of PMO-Ru sample investigated in the hydrogenation of various olefins showed higher activity than a neat and MCM-41 supported ruthenium catalyst. High catalytic activity and stability of organosilica supported ruthenium catalyst are attributed to the hydrophobic environments and to the unique structural features imparted from the presence of organic groups in the framewall positions. (C) 2012 Elsevier B.V. All rights reserved.</p>10aHeterogenization10aHydrogenation10aOrganosilica10aruthenium10aTriphenyl phosphine1 aSisodiya, Sheetal1 aLazar, Anish1 aShylesh, Sankaranarayanapillai1 aWang, Lei1 aThiel, Werner, R.1 aSingh, Anand, Pal  uhttps://library.ncl.res.in/content/covalently-anchored-ruthenium-phosphine-complex-mesoporous-organosilica-catalytic-0