Please use this identifier to cite or link to this item:
https://scholarbank.nus.edu.sg/handle/10635/92261
DC Field | Value | |
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dc.title | Post-synthesis alumination of MCM-41 by Al(NO3)3 (I): Improvement in acidity for purely siliceous MCM-41 | |
dc.contributor.author | Kawi, S. | |
dc.contributor.author | Shen, S.C. | |
dc.date.accessioned | 2014-10-09T09:59:07Z | |
dc.date.available | 2014-10-09T09:59:07Z | |
dc.date.issued | 2000 | |
dc.identifier.citation | Kawi, S.,Shen, S.C. (2000). Post-synthesis alumination of MCM-41 by Al(NO3)3 (I): Improvement in acidity for purely siliceous MCM-41. Studies in Surface Science and Catalysis 129 : 219-226. ScholarBank@NUS Repository. | |
dc.identifier.issn | 01672991 | |
dc.identifier.uri | http://scholarbank.nus.edu.sg/handle/10635/92261 | |
dc.description.abstract | The effects of post-synthesis alumination on purely siliceous MCM-41 material with Al(NO3)3 on acidity have been studied by FTIR, NH3-TPD, and IPA decomposition reaction. The FTIR results of pyridine absorption show that both Lewis and Bronsted acid sites are increased by the post-modification. The amount of NH3 adsorbed on the alumina-modified MCM-41 samples increases with the loading of Al onto the surface of MCM-41. Due to the improved acidity, the alumina-modified MCM-41 materials show considerably higher catalytic activity for dehydration of isopropanol than purely siliceous MCM-41. In addition, XRD and N2 adsorption results show that all MCM-41 samples maintained their uniform hexagonal mesoporous structure well after they have been subjected to post-synthesis alumination with the loading of Al species on Si-MCM-41 varied from 0.1 wt. % up to 10 wt. % (calculated based on Al2O3). © 2000 Elsevier Science B.V. All rights reserved. | |
dc.source | Scopus | |
dc.type | Article | |
dc.contributor.department | CHEMICAL & ENVIRONMENTAL ENGINEERING | |
dc.description.sourcetitle | Studies in Surface Science and Catalysis | |
dc.description.volume | 129 | |
dc.description.page | 219-226 | |
dc.description.coden | SSCTD | |
dc.identifier.isiut | NOT_IN_WOS | |
Appears in Collections: | Staff Publications |
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