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Hybrid Catalysts: Internal or External Configuration for Better Catalytic Performance?

Published online by Cambridge University Press:  10 February 2011

R. Le Van Mao ,
M. A. Saberi ,
J. A. Lavigne ,
S. Xiao  and
G. Denes
R. Le Van Mao
Affiliation:
Department of Chemistry and Biochemistry, Concordia University, 1455 De Maisonneuve West, Montreal, Quebec, H3G 1M8 Canada
M. A. Saberi
Affiliation:
Department of Chemistry and Biochemistry, Concordia University, 1455 De Maisonneuve West, Montreal, Quebec, H3G 1M8 Canada
J. A. Lavigne
Affiliation:
Department of Chemistry and Biochemistry, Concordia University, 1455 De Maisonneuve West, Montreal, Quebec, H3G 1M8 Canada
S. Xiao
Affiliation:
Department of Chemistry and Biochemistry, Concordia University, 1455 De Maisonneuve West, Montreal, Quebec, H3G 1M8 Canada
G. Denes
Affiliation:
Department of Chemistry and Biochemistry, Concordia University, 1455 De Maisonneuve West, Montreal, Quebec, H3G 1M8 Canada
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Abstract

Hybrid catalysts with the external configuration for the cocatalyst showed enhanced product diffusion rates in the n-octane hydrocracking, only if the reaction was carried out at relatively high temperatures. In the n-heptane isomerization, direct incorporation of the Al species into the HY zeolite micropores produced sorption sites which positively affected the selectivity to liquid isomers. Such as internal hybrid configuration resulted in a more important increase in the liquid isomer selectivity than that given by the external hybrid configuration, both systems being designed for better product outward-diffusion.

Information

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 497: Symposium Z – Recent Advances in Catalytic Materials , 1997 , 183
Copyright
Copyright © Materials Research Society 1998

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References

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