Process and catalyst for production of diaryl carbonates

Details Process and catalyst for production of diaryl carbonates Process and catalyst for production of diaryl carbonates

C - Chemistry, Metallurgy

07

C

C07C 69/96 (2006.01) C07C 69/02 (2006.01)

Patent

CA 2067375

2067375 9106526 PCTABS00005 A process and a heterogeneous catalyst for the production of diaryl carbonates from the reaction of an aromatic hydroxy compound and a carbonyl halide and elimination of anhydrous hydrogen halide. The catalyst comprises a salt containing one or more metal cations and a neutralizing number of anions, said salt being impregnated on an inert porous support which renders the salt insoluble. The process can be carried out under reaction conditions such that the reactants remain in the gas phase when not adsorbed on the catalyst, and, in another embodiment, the products too remain in the gas phase. The process can be carried out in a fixed bed reactor, a fluidized bed reactor, or a circulating fluidized bed reactor.

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