B - Operations – Transporting – 01 – J
Patent
B - Operations, Transporting
01
J
252/52, 260/611
B01J 27/24 (2006.01) B01J 23/10 (2006.01) C07B 43/02 (2006.01) C07C 201/08 (2006.01) C07C 205/06 (2006.01) C07C 205/12 (2006.01) C07C 205/37 (2006.01)
Patent
CA 1258667
VAPOR PHASE NITRATION CATALYSTS AND PROCESSES FOR THE PREPARATION AND USE THEREOF ABSTRACT OF THE DISCLOSURE Aromatic compounds are nitrated in the vapor phase via a process comprising contacting the aromatic compounds with a nitrating agent in the presence of a nitration promoting catalyst composition represented by the empirical formula: (M1aM2bOc)x(NO2)y wherein M1 is at least one element selected from Group 4b of the Periodic Table of the Elements, M2 is at least one element selected from Group 3b of the Periodic Table of the Elements, a is 1, b is 0 to 20, c is a number taken to satisfy the average valences of M1 and M2 in the oxidation states in which they exist in the com- position, x is 1, and y is 0 to c. Such catalyst compositions are prepared by forming a mixture of at least one Group 4b oxide or compound convertible by heat into such Group 4b oxide and at least one Group 3b oxide or compound convertible by heat into such Group 3b oxide and calcining the mixture at a temper- ature of at least 125° C. They are particularly effective to catalyze the vapor phase nitration of chlorobenzene and are characterized in such reaction by providing a para/ortho isomer distribution ratio of at least about 1.9/1.
495258
Mcfadden Fincham
Solutia Inc.
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