Synthesis and characterization of acidic properties of Al-SBA-15 materials with varying Si/Al ratios
IR@IIP: CSIR-Indian Institute of Petroleum, Dehradun
View Archive Info| Field | Value | |
| Creator |
Muthu Kumaran,G
Garg,Shelu Soni,Kapil Manoj, Kumar Gupta,J.K Sharma,L.D Rama Rao,K.S Murali Dhar,G |
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| Date |
2009-07-01T11:22:11Z
2009-07-01T11:22:11Z 2009-07-01T11:22:11Z |
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| Identifier |
Microporous and Mesoporous Materials 114 (2008) 103–109
http://hdl.handle.net/123456789/286 |
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| Description |
Al-SBA-15 of varying Si/Al ratios in the range 11.4–78.4 was synthesized using tri-block copolymer P123. The calcined materials were
examined by XRD, pore size distribution, surface area, 27Al NMR spectroscopy. The acidity and acid strength distribution were studied
using microcalorimetric adsorption of NH3. The acidic properties were also examined by cumene cracking reaction as a function of Si/Al
ratios. Systematic variation of acidity and activity was observed as a function of Si/Al ratio. The initial heats of NH3 adsorption correlated
well with activity indicate that acid sites with DH > 100 kJ/mole is responsible for cumene cracking activity. Linear correlations
were obtained with total acidity and cumene cracking activities. The tetrahedral aluminum was found to be responsible for the observed
acidities and catalytic activities.
Keywords: Al-SBA-15; Mesoporous materials; Acidity and acid strength distributions; Microcalorimetry; Cumene cracking
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| Language |
en_US
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| Subject |
Mesoporous materials
Cumene cracking Microcalorimetry |
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| Title |
Synthesis and characterization of acidic properties of Al-SBA-15 materials with varying Si/Al ratios
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| Type |
Article
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