Synthesis and characterization of acidic properties of Al-HMS materials of varying Si/Al ratios
IR@IIP: CSIR-Indian Institute of Petroleum, Dehradun
View Archive Info| Field | Value | |
| Creator |
Chiranjeevi,T
Muthu Kumaran,G Gupta,J.K Murali Dhar,G |
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| Date |
2009-07-03T04:08:09Z
2009-07-03T04:08:09Z 2009-07-03T04:08:09Z |
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| Identifier |
Thermochimica Acta 443 (2006) 87–92
http://hdl.handle.net/123456789/290 |
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| Description |
HMS and Al-HMS materials with Si/Al ratio in the range 5–45 were synthesized by neutral templating pathway. The as synthesized as well
as calcined samples were examined for pore size distribution, surface area and XRD. These investigations confirmed the hexagonal mesoporous
structure formation at all Si/Al ratios. The TGA measurements indicated that two types of template species interacting with Si or Al could be
distinguished. The acidity and acid strength distribution studies using microcalorimetric NH3 adsorption indicated that the acidity increases with Al
content in the mesoporous structure. The presence of Al in the structure creates a wide variety of acid sites of varying strengths. The heterogeneity
of the sites also increases with Al content of the catalysts. The activities for cumene cracking reaction to test acidity of the materials supported the
trend obtained from microcalorimetric NH3 adsorption results.
Keywords: HMS; Al-HMS; Mesoporous materials; Microcalorimetry; Acidity; Acid strength distribution
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| Language |
en_US
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| Subject |
Microcalorimetry
Mesoporous materials Al-HMS |
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| Title |
Synthesis and characterization of acidic properties of Al-HMS materials of varying Si/Al ratios
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| Type |
Article
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