Vapor-Phase Carbonylation of Methanol over Tin-on-Active Carbon Catalysts

Article abstract of DOI:10.1246/bcsj.63.2352

It was found that a number of metals or metal oxides showed catalytic activities for the vapor-phase carbonylation of methanol in the presence of methyl iodide (CH3I) promoter under the conditions of 250 deg C and 10 atm (1 atm = 1.01325x10⁵ Pa), when they were supported on active carbon.Particularly, tin and lead showed high activities.The catalytic activity of the metallic tin increased with the process time over 5 h while that of the unreduced tin catalyst increased for more than 10 h to reach the same level.The catalytic performances of the tin on active carbon were similar to those of the nickel on active carbon which have been already reported.It was suggested that the active species of the tin catalyst was some kind of metal compounds which was highly dispersed on active carbon and was able to be incorporated in the redox cycle.