公开(公告)号：US20230192500A1

公开(公告)日：2023-06-22

申请号：US17925331

申请日：2021-05-10

Applicant: BASF SE

Inventor： Gerhard OLBERT ,  Benjamin KRON ,  Jochen GAUER ,  Jens FERBITZ ,  Torsten MATTKE ,  Kai THIELE ,  Peter VAN DEN ABEEL ,  Koenraad VANDEWALLE ,  Kirill BRAMNIK ,  Jim BRANDTS

IPC: C01B32/80 ,  B01J21/18 ,  B01J35/10 ,  B01J35/04

CPC classification number: C01B32/80 ,  B01J21/18 ,  B01J35/04 ,  B01J35/1023 ,  B01J35/1028 ,  B01J35/1042 ,  B01J35/1047 ,  B01J35/1061

Abstract: The invention relates to a process for the production of phosgene comprising a gas phase reaction of carbon monoxide and chlorine in the presence of a carbon catalyst in a multi-tubular reactor, wherein the carbon catalyst comprises an amount of mesopores having a pore diameter in the range of from 2 to 50 nm of at least 0.45 ml/g of the total pore volume and the use of a carbon catalyst comprising an amount of mesopores having a pore diameter in the range of from 2 to 50 nm of at least 0.45 ml/g of the total pore volume, for the production of phosgene and a reaction mixture for preparing phosgene, the mixture comprising a catalyst for preparing phosgene comprising a porous material comprising carbon, micropores and mesopores, wherein said micropores have a pore diameter of less than 2 nm and wherein said mesopores have a pore diameter in the range of from 2 to 50 nm, wherein the volume of the mesopores of the porous material is of at least 0.45 ml/g, and a gas stream G comprising carbon monoxide (CO) and chlorine (Cl2).