Catalytic properties of zeolites MCM-22 and NU-87 in disproportionation of toluene |
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| Authors: | Se-Ho Park and Hyun-Ku Rhee |
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| Institution: | (1) School of Chemical Engineering and Institute of Chemical Processes, Seoul National University, Kwanak-ku, Seoul, 151-742, Korea |
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| Abstract: | The catalytic properties of MCM-22 and NU-87 were investigated for the disproportionation of toluene to produce benzene and
xylene, and the results were compared with those obtained over mordenite, beta and ZSM-5. It turns out that dealumination
of MCM-22 removes selectively the acid sites from the external surface and thus suppresses the secondary isomerization of
p-xylene, enhancing the para-selectivity. This indicates that the dealuminated MCM-22 is a promising catalyst for the selective formation of p-xylene from toluene disproportionation.
This revised version was published online in June 2006 with corrections to the Cover Date. |
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| Keywords: | NU-87 dealumination toluene disproportionation para-selectivity MCM-22 |
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