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Title: A new approach for synthesis of CSA-SBA-15: Its characterization and superior catalytic activity
Authors: Selvaraj, M.
Narayanan, V.
Kawi, S. 
Keywords: CSA-SBA-15
Epoxidation of olefins
Selectivity of epoxides
Superior catalytic activity
Issue Date: Aug-2010
Citation: Selvaraj, M., Narayanan, V., Kawi, S. (2010-08). A new approach for synthesis of CSA-SBA-15: Its characterization and superior catalytic activity. Microporous and Mesoporous Materials 132 (3) : 494-500. ScholarBank@NUS Repository.
Abstract: A novel CSA-SBA-15 has been synthesized under mild reaction condition using mesoporous SBA-15 synthesized by pH-adjusting method with organic modifying reagents and copper nitrate trihydrate, and it has been characterized by XRD, FTIR, N2 adsorption, ESR, UV-vis DRS, FE-SEM and TEM for the investigation of nature of copper species and its interaction with SA-SBA-15. The results of elemental analysis obtained by CHN and ICP-AES show that the molar ratio of N:Cu is ≈3.5, and the molar ratio of C:Cu is ≈23.8. ICP-AES result shows the number of copper-ions (ca. 0.198 wt.%) coordinated with SA-SBA-15. The FTIR results confirm the amine and azomethine groups grafted on SBA-15 while the results of ESR and UV-vis DRS confirm the Cu(II) species anchored on SA-SBA-15. The CSA-SBA-15 is found to be a highly active and recycle heterogeneous catalyst for the selective syntheses of olefin epoxides, and it has superior catalytic activity in the epoxidation of olefins than metal ions incorporated/impregnated mesoporous catalysts. © 2010 Elsevier Inc. All rights reserved.
Source Title: Microporous and Mesoporous Materials
ISSN: 13871811
DOI: 10.1016/j.micromeso.2010.03.032
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