Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.micromeso.2007.06.036
Title: Epoxidation of styrene over mesoporous Zr-Mn-MCM-41
Authors: Selvaraj, M.
Song, S.W.
Kawi, S. 
Keywords: Effect of oxidant
Effect of solvent
Epoxidation
Recyclability
Zr-Mn-MCM-41
Issue Date: 15-Apr-2008
Source: Selvaraj, M., Song, S.W., Kawi, S. (2008-04-15). Epoxidation of styrene over mesoporous Zr-Mn-MCM-41. Microporous and Mesoporous Materials 110 (2-3) : 472-479. ScholarBank@NUS Repository. https://doi.org/10.1016/j.micromeso.2007.06.036
Abstract: Epoxidation of styrene with t-butyl hydroperoxide (TBHP) as an oxidizing agent has been conducted under liquid phase reaction conditions over Zr-Mn-MCM-41 with different nSi/(nZr + nMn) ratios and Mn-MCM-41(31) catalysts for selective synthesis of styrene oxide. The influences of various reaction parameters such as temperature, time, oxidants, and solvents, styrene to TBHP mmol ratios and acetonitrile (MeCN) to N,N-dimethylformamide (DMF) volume ratios on the conversion of styrene and the selectivity of styrene oxide have also been studied. With the decrease of the nSi/(nZr + nMn) ratios of Zr-Mn-MCM-41 catalysts from 327 to 49, the conversion of styrene as well as the yield and selectivity of styrene oxide increase due to the increase of the number of Lewis acid sites on the surface of catalysts. Moreover, the conversion and selectivity in Zr-Mn-MCM-41(49) is higher as compared to that of Mn-MCM-41(31). The Zr-Mn-MCM-41(49) is found to be reusable for the epoxidation of styrene with TBHP for selective synthesis of styrene oxide. © 2007 Elsevier Inc. All rights reserved.
Source Title: Microporous and Mesoporous Materials
URI: http://scholarbank.nus.edu.sg/handle/10635/88867
ISSN: 13871811
DOI: 10.1016/j.micromeso.2007.06.036
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