Method for maintaining para-selectivity of modified zeolite...

Details Method for maintaining para-selectivity of modified zeolite... Method for maintaining para-selectivity of modified zeolite...

C - Chemistry, Metallurgy

07

C

252/2

C07C 6/12 (2006.01) B01J 29/40 (2006.01) C07C 2/66 (2006.01)

Patent

CA 1152482

ABSTRACT A method for prolonging the useful life of para-selective modified zeolite catalysts, said zeolites having a silica to alumina mole ratio of at least about 12, a constraint index of about 1-12 and having been modified by the addition thereto of a minor proportion of a difficultly reducible oxide. The selective catalyst is maintained at temperatures of at least about 50°C or, alternatively, in an atmosphere substantially free of moisture. - 34 -

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