Investigation of catalytic properties of Cs salt of di-copper substituted phosphotungstate, Cs7[PW10Cu2(H2O)O38] in epoxidation of styrene
作者： Rajesh Sadasivan , Anjali Patel , Amar Ballabh
DOI: 10.1016/J.ICA.2018.12.034
关键词:
摘要: Abstract The present work describes a detailed investigation of the catalytic activity Cesium salt di-copper substituted phosphotungstate for oxidation styrene using tert-butyl hydroperoxide as oxidant. Various parameters like time, catalyst amount, mole ratio substrate to TBHP and temperature were optimized good conversion (77.9%) was obtained along with high selectivity epoxide (51.6%). recycled reused multiple times without significant loss activity. A kinetic study carried out gain deeper understanding role each component in reaction system. plausible mechanism also proposed based on studies, ESR Cyclic Voltammetry studies.
elsevier.com
sci-hub.se 参考文章(31)
Ronny Neumann, Alexander M. Khenkin, Noble Metal (RuIII, PdII, PtII) Substituted "Sandwich" Type Polyoxometalates: Preparation, Characterization, and Catalytic Activity in Oxidations of Alkanes and Alkenes by Peroxides Inorganic Chemistry. ,vol. 34, pp. 5753- 5760 ,(1995) , 10.1021/IC00127A012
R.P. Singh, H.N. Subbarao, Sukh Dev, Organic reactions in a solid matrix—V: Silica-gel supported chromic acid reagents Tetrahedron. ,vol. 35, pp. 1789- 1793 ,(1979) , 10.1016/0040-4020(79)88010-2
G. C. Bond, Heterogeneous Catalysis: Principles and Applications ,(1974)
Ronny Neumann, Chalil Abu-Gnim, A ruthenium heteropolyanion as catalyst for alkane and alkene oxidation Journal of The Chemical Society, Chemical Communications. pp. 1324- 1325 ,(1989) , 10.1039/C39890001324
Gudrun Scholz, Rainer Lück, Reinhard Stößer, Hans-Joachim Lunk, Friedrich Ritschl, Copper–oxygen coordination in CuII-heteropolyanion compounds: electron paramagnetic resonance studies and CNDO/2 calculations J. Chem. Soc., Faraday Trans.. ,vol. 87, pp. 717- 725 ,(1991) , 10.1039/FT9918700717
Ronny Neumann, Chalil Abu-Gnim, Alkene oxidation catalyzed by a ruthenium-substituted heteropolyanion, SiRu(L)W11O39: the mechanism of the periodate-mediated oxidative cleavage Journal of the American Chemical Society. ,vol. 112, pp. 6025- 6031 ,(1990) , 10.1021/JA00172A018
Yanling Liang, Chaoyong Yi, Simon Tricard, Jian Fang, Jihua Zhao, Weiguo Shen, Prussian blue analogues as heterogeneous catalysts for epoxidation of styrene RSC Advances. ,vol. 5, pp. 17993- 17999 ,(2015) , 10.1039/C4RA16570E
N MIZUNO, K YAMAGUCHI, K KAMATA, Epoxidation of olefins with hydrogen peroxide catalyzed by polyoxometalates Coordination Chemistry Reviews. ,vol. 249, pp. 1944- 1956 ,(2005) , 10.1016/J.CCR.2004.11.019
Thomas Fey, Holger Fischer, Stefan Bachmann, Klaus Albert, Carsten Bolm, Silica-Supported TEMPO Catalysts: Synthesis ad Application in the Anelli Oxidation of Alcohols Journal of Organic Chemistry. ,vol. 66, pp. 8154- 8159 ,(2001) , 10.1021/JO010535Q
Pragati A. Shringarpure, Anjali Patel, Supported undecatungstophosphate: An efficient recyclable bi-functional catalyst for esterification of alcohols as well as selective oxidation of styrene Chemical Engineering Journal. ,vol. 173, pp. 612- 619 ,(2011) , 10.1016/J.CEJ.2011.08.012