EFFECT OF PREPARATION METHOD AND THE NATURE OFSULFATED MIXED OXIDE CATALYSTS ON THE ACID STRENGTH DISTRIBUTION
IR@IIP: CSIR-Indian Institute of Petroleum, Dehradun
View Archive Info| Field | Value | |
| Creator |
Vijayanand,P
Viswanadham,N Ray,N Gupta,J.K Rao,T.S.R Prasada |
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| Date |
2009-07-15T11:24:33Z
2009-07-15T11:24:33Z 2009-07-15T11:24:33Z |
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| Identifier |
Recent Advances in Basic and Applied Aspects of Industrial Catalysis Studies in Surface Science and Catalysis, Vol. 113
http://hdl.handle.net/123456789/349 |
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| Description |
The supports used for sulfated ZrO2, ZrO2-AhO3, ZrO2-SiO2 were prepared by
ammonia hydrolysis and precipitation from homogeneous solutions (PFHS) methods.
Microcalorimetric measurements of ammonia adsorption indicates the sulfation of metal
oxides caused the enhancement of acid sites with ~H > 130 kllmo!. High acid strength
distribution and surface area of ZrO2-AhO3/Sol- was obtained by sulfation of a support,
prepared by PFHS method than the co-precipitation method but it was reverse in the case of
ZrO2/S0l-. Higher initial heat of adsorption, 178 kllmol was observed on ZrO2-
AhO3/Sol- with low density of acid sites in which support was prepared by co-ppt. method.
High surface area SOl-IZrO2-SiO2 have the similar strength and distribution of acid sites
present in sulfated zirconia with ~H 158 kllmo!. All the sulfated mixed oxides were
amorphous at 620°C.
Keywords Sulfated zirconia, Mixed oxides, Microcalorimetric measurements, Ammonia
adsorption and Acid strength.
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| Language |
en_US
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| Subject |
Heterogeneous Catalysis
Microcalorimetric measurements Sulfated zirconia |
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| Title |
EFFECT OF PREPARATION METHOD AND THE NATURE OFSULFATED MIXED OXIDE CATALYSTS ON THE ACID STRENGTH DISTRIBUTION
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| Type |
Article
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