Patent ID: 6124512
Filing Date: 2000-09-26
Classification: B01J,C07B,C07C

Abstract:
A method of adding at least one halogen atom to the aromatic ring of an aromatic compound comprising reacting said aromatic compound with a halogenating agent in the presence of an acidic solid catalyst that resists attack by said halogenating agent and by its hydrogen halide, and is the calcination reaction product of(A) 51 to 99 wt % of a support which comprises at least one inorganic oxide or hydroxide of at least one metal that is at least divalent and forms a metal-to-oxygen matrix during calcination; and(B) 1 to 49 wt % of at least one dopant which comprises a compound that places an element that is at least divalent, bonded to oxygen atoms, into said matrix during said calcination, resulting in the formation of said acidic solid catalyst.