Mesoporous silica MCM-48 molecular sieve modified with SnCl2 in alkaline medium for selective oxidation of alcohol
Tin modified mesoporous silica MCM-48 with various Si/Sn ratios were synthesized under alkaline media by post-synthesis modification using rice husk ash as Si precursor and SnCl2 as tin source. Physicochemical information of the materials was obtained by XRD, N2-physisorption, FESEM, UV-VIS diffuse...
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| Format: | Article |
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Elsevier Ltd.
2007
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| _version_ | 1796854224139583488 |
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| author | Endud, Salasiah Wong, Ka Lun |
| author_facet | Endud, Salasiah Wong, Ka Lun |
| author_sort | Endud, Salasiah |
| collection | ePrints |
| description | Tin modified mesoporous silica MCM-48 with various Si/Sn ratios were synthesized under alkaline media by post-synthesis modification using rice husk ash as Si precursor and SnCl2 as tin source. Physicochemical information of the materials was obtained by XRD, N2-physisorption, FESEM, UV-VIS diffuse reflectance and FTIR spectroscopies. The tin modified MCM-48 samples were selective in the oxidation of benzyl alcohol to benzaldehyde by using tert-butyl hydroperoxide aqueous solution as oxidant. The catalytic activity can be correlated with the strong Lewis acidity generated by the presence of tin species in Si-MCM-48. The re-usability of tin modified MCM-48 catalysts and the effect of substrate to oxidant ratio on the catalytic activity are discussed. |
| first_indexed | 2024-03-05T18:11:13Z |
| format | Article |
| id | utm.eprints-7471 |
| institution | Universiti Teknologi Malaysia - ePrints |
| last_indexed | 2024-03-05T18:11:13Z |
| publishDate | 2007 |
| publisher | Elsevier Ltd. |
| record_format | dspace |
| spelling | utm.eprints-74712009-01-06T01:03:56Z http://eprints.utm.my/7471/ Mesoporous silica MCM-48 molecular sieve modified with SnCl2 in alkaline medium for selective oxidation of alcohol Endud, Salasiah Wong, Ka Lun QD Chemistry Tin modified mesoporous silica MCM-48 with various Si/Sn ratios were synthesized under alkaline media by post-synthesis modification using rice husk ash as Si precursor and SnCl2 as tin source. Physicochemical information of the materials was obtained by XRD, N2-physisorption, FESEM, UV-VIS diffuse reflectance and FTIR spectroscopies. The tin modified MCM-48 samples were selective in the oxidation of benzyl alcohol to benzaldehyde by using tert-butyl hydroperoxide aqueous solution as oxidant. The catalytic activity can be correlated with the strong Lewis acidity generated by the presence of tin species in Si-MCM-48. The re-usability of tin modified MCM-48 catalysts and the effect of substrate to oxidant ratio on the catalytic activity are discussed. Elsevier Ltd. 2007-04-19 Article PeerReviewed Endud, Salasiah and Wong, Ka Lun (2007) Mesoporous silica MCM-48 molecular sieve modified with SnCl2 in alkaline medium for selective oxidation of alcohol. Microporous and Mesoporous Materials, 101 (1-2). pp. 256-263. ISSN 1387-1811 http://dx.doi.org/10.1016/j.micromeso.2006.12.029 10.1016/j.micromeso.2006.12.029 |
| spellingShingle | QD Chemistry Endud, Salasiah Wong, Ka Lun Mesoporous silica MCM-48 molecular sieve modified with SnCl2 in alkaline medium for selective oxidation of alcohol |
| title | Mesoporous silica MCM-48 molecular sieve modified with SnCl2 in alkaline medium for selective oxidation of alcohol
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| title_full | Mesoporous silica MCM-48 molecular sieve modified with SnCl2 in alkaline medium for selective oxidation of alcohol
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| title_fullStr | Mesoporous silica MCM-48 molecular sieve modified with SnCl2 in alkaline medium for selective oxidation of alcohol
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| title_full_unstemmed | Mesoporous silica MCM-48 molecular sieve modified with SnCl2 in alkaline medium for selective oxidation of alcohol
|
| title_short | Mesoporous silica MCM-48 molecular sieve modified with SnCl2 in alkaline medium for selective oxidation of alcohol
|
| title_sort | mesoporous silica mcm 48 molecular sieve modified with sncl2 in alkaline medium for selective oxidation of alcohol |
| topic | QD Chemistry |
| work_keys_str_mv | AT endudsalasiah mesoporoussilicamcm48molecularsievemodifiedwithsncl2inalkalinemediumforselectiveoxidationofalcohol AT wongkalun mesoporoussilicamcm48molecularsievemodifiedwithsncl2inalkalinemediumforselectiveoxidationofalcohol |