01736nas a2200241   4500008004100000022001400041245014000055210006900195260007300264300001200337490000800349520081300357653001201170653003201182653001301214653002701227653001801254100002601272700001801298700002501316700002801341856012501369       2005                        eng d  a1381-116900aEpoxidation of styrene by anhydrous hydrogen peroxide over boehmite and alumina catalysts with continuous removal of the reaction water0 aEpoxidation of styrene by anhydrous hydrogen peroxide over boehm  aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcMAR  a217-2220 v2273 a<p>Boehmite and alumina (obtained from the boehmite by its calcination at different temperatures 300-900degreesC) are active and stable catalysts for the selective epoxidation of styrene by anhydrous H2O2 to styrene oxide with continuous removal of the reaction water. Influence of the catalyst (boehemite) calcination temperature, H2O2/styrene ratio and catalyst loading on the styrene conversion and selectivity for styrene oxide. phenyl acetaldehyde. benzaldehyde and benzoic acid in the epoxidation has been investigated. In the presence of water. the catalyst shows very poor activity and selectivity in the epoxidation. The catalyst also catalyses H2O2 decomposition and hence has optimum loading for obtaining high-styrene conversion in the epoxidation. (C) 2004 Elsevier B.V. All rights reserved.</p>10aAlumina10aanhydrous hydrogen peroxide10aboehmite10aEpoxidation of styrene10aStyrene oxide1 aChoudhary, Vasant, R.1 aPatil, N., S.1 aChaudhari, Nitin, K.1 aBhargava, Suresh, Kumar  uhttps://library.ncl.res.in/content/epoxidation-styrene-anhydrous-hydrogen-peroxide-over-boehmite-and-alumina-catalysts-001816nas a2200289   4500008004100000022001400041245012100055210006900176260007300245300001400318490000600332520082400338653001401162653001401176653001401190653001801204653001301222653001601235653001201251653001801263653003301281100002601314700001401340700002501354700001801379856012901397       2007                        eng d  a1566-736700aSupported copper oxide as a highly active/selective catalyst for the epoxidation of styrene by TBHP to styrene oxide0 aSupported copper oxide as a highly activeselective catalyst for   aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcOCT  a1556-15600 v83 a<p>Liquid phase epoxidation of styrene by anhydrous and aqueous TBHP to styrene oxide has been studied under reflux, using different supported CuO (viz. Cuo/Si-MCM-41, CuO/Al2O3, CuO/Ga2O3 and CuO/In2O3) as easily separable and reusable heterogeneous catalysts. The CuO/Ga2O3 catalyst showed the best performance in the epoxidation by aqueous TBHP. The CuO supported on In2O3 or Si-MCM-41 also showed very good performance in the epoxidation but only by anhydrous TBHP. However, the CUO/SiO2 catalyst, however, showed very good performance in the epoxidation by both the anhydrous and aqueous TBHP. Influence of the reaction conditions (temperature, time and TBHP/styrene ratio) on the epoxidation by aqueous TBHP over the best catalyst (CuO/Ga2O3) has been investigated. (C) 2007 Elsevier B.V. All rights reserved.</p>10aCuO/Al2O310aCuO/Ga2O310aCuO/In2O310aCuo/Si-MCM-4110aCuO/SiO210aepoxidation10astyrene10aStyrene oxide10atertiary butyl hydroperoxide1 aChoudhary, Vasant, R.1 aJha, Rani1 aChaudhari, Nitin, K.1 aJana, Prabhas  uhttps://library.ncl.res.in/content/supported-copper-oxide-highly-activeselective-catalyst-epoxidation-styrene-tbhp-styrene-0