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The nature of the active sites in cumene cracking on amorphous silica aluminas
Author(s) -
Marczewski M.,
Wojciechowski B. W.
Publication year - 1982
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450600507
Subject(s) - cumene , cracking , catalysis , fluid catalytic cracking , amorphous solid , amorphous silica , silicate , cationic polymerization , chemistry , materials science , fraction (chemistry) , inorganic chemistry , chemical engineering , organic chemistry , engineering
We present evidence which indicates that the nature of the active sites is the same for amorphous catalysts as it is for crystalline alumina silicate cracking catalysts. The only differences we find in the various cracking catalysts lie in the total concentrations of active sites and in the ratio of Bronsted to Lewis sites. In view of this, and because even zeolites have only a fraction of their cationic sites active in cumene cracking, we suggest that it is possible that a silica alumina catalyst could exist that is more active by as much as an order of magnitude than any catalyst presently available for cumene cracking.