公开(公告)号：CA1197229A

公开(公告)日：1985-11-26

申请号：CA431131

申请日：1983-06-24

Applicant: STANDARD OIL CO OHIO

Inventor： BREMER NOEL J ,  DRIA DENNIS E ,  BLUM PATRICIA R ,  MILBERGER ERNERST C ,  NICHOLAS MARK L

IPC: C07D307/60 ,  B01J27/198 ,  C07B61/00 ,  C07C51/215 ,  C07C51/25

Abstract: ATTRITION RESISTANT MICROSPHEROIDAL FLUID BED CATALYSTS CONTAINING THE MIXED OXIDES OF VANADIUM AND PHOSPHORUS A process is provided for the preparation of attrition resistant, microspheroidal fluid bed catalysts comprising the mixed oxides of vanadium and phosphorus in which a vanadium phosphorus mixed oxided catalyst precursor is densified, comminuted, formed into fluidizable particles and calcined under fluidization-type conditions. The present invention further provides the attrition resistant fluidizable catalysts prepared by the inventive process, and further provides a process for utilizing such attrition resistant catalysts in the production of maleic anhydride in the vapor phase by the oxidation of 4 carbon atom hydrocarbons.

公开(公告)号：CA1202950A

公开(公告)日：1986-04-08

申请号：CA414316

申请日：1982-10-27

Applicant: STANDARD OIL CO OHIO

Inventor： BLUM PATRICIA R ,  MILBERGER ERNEST C ,  NICHOLAS MARK L ,  ZOCK PATRICIA A

IPC: C07D307/60 ,  B01J27/14 ,  B01J27/198 ,  B01J27/28 ,  B01J37/16 ,  B01J38/30 ,  C07B61/00 ,  C07C51/215

Abstract: A process for activating fluid bed catalysts useful for producing maleic anhydride from 4 carbon atom hydrocarbons is provided including contacting the fluidized catalyst containing the mixed oxides of vanadium and phosphorus with oxygen and a reducing gas at least partially combustible with oxygen at elevated temperatures sufficient to cause such combustion, wherein the molar ratio of reducing gas to oxygen is below the stoichiometric ratio required for complete combustion of the reducing gas. Also provided are catalysts activated by the process of the invention, as well as a process for producing maleic anhydride utilizing the catalysts thus activated.