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4883569 
Journal Article 
Hybrid catalysts: Internal or external configuration for better catalytic performance? 
Le Van Mao, R; Saberi, MA; Lavigne, JA; Xiao, S; Denes, G 
1998 
1 
Materials Research Society Symposium Proceedings
ISSN: 0272-9172
EISSN: 1946-4274 
MATERIALS RESEARCH SOCIETY SYMPOSIUM PROCEEDINGS 
497 
183-188 
WOS:000077031400026 
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.