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Heteropoly Acids Supported on Sol-Gel Matrices and Their Catalytic Activity and Selectivity

Published online by Cambridge University Press:  15 February 2011

D.E. Grandstaff ,
M. D. Paciolla ,
L.T. Sein Jr. ,
R. Jacob ,
K. Narielwala ,
S. John ,
N. Patel ,
M. Kashani ,
K. Doll  and
Y. Wei
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D.E. Grandstaff
Affiliation:
Department of Geology, Temple University, Phila., PA 19122
M. D. Paciolla
Affiliation:
Department of Chemistry, Temple University, Phila, PA 19122
L.T. Sein Jr.
Affiliation:
Department of Chemistry, Temple University, Phila, PA 19122
R. Jacob
Affiliation:
Department of Chemistry, Temple University, Phila, PA 19122
K. Narielwala
Affiliation:
Department of Chemistry, Temple University, Phila, PA 19122
S. John
Affiliation:
Department of Chemistry, Temple University, Phila, PA 19122
N. Patel
Affiliation:
Department of Chemistry, Temple University, Phila, PA 19122
M. Kashani
Affiliation:
Merck and Co., West Pointe, PA, 19486
K. Doll
Affiliation:
Department of Geology, Temple University, Phila., PA 19122
Y. Wei
Affiliation:
Department of Chemistry, Drexel University, Phila, PA, 19107
S. A. Jansen
Affiliation:
Department of Chemistry, Temple University, Phila, PA 19122
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Abstract

Heteropoly acids (HPA) are well known solid acids as well as oxidation catalysts. They find application in both homogeneous and heterogeneous reactions. As catalysts, problems associated with surface area and instability are diminished by supporting the HPA. It has been reported that supporting these materials on oxide substrates or porous carbon materials has resulted in some degree of instability. It has also been shown that encapsulating HPA in sol-gel silica matrices has produced an increase in catalytic performance without compromising the catalytic activity of the HPA. In this work, we analyzed the activity of a silica sol-gel supported HPA catalyst. The reaction which was chosen to illustrate such issues was the oxidation/dehydration of 1-butanol. In addition, the specific role of the support in the catalytic process is described. In this work, we characterized the silica-sol gel supported HPA catalyst to try to understand the effect of preparation in the overall catalytic selectivity and activity.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 549: Symposium FF – Advanced Catalytic Materials - 1998 , 1998 , 249
Copyright
Copyright © Materials Research Society 1999

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