Reaction path of methoxy species to isobutene and its dependence on oxide catalysts in CO hydrogenation

Selective Formation of Isobutene from CO Hydrogenation over Zirconium Dioxide Based Catalysts

“…This would imply that either the same surface active sites of catalysts were required for the formation of DME, CH 3 OH, and i -C 4 or DME and CH 3 OH might be the intermediates in forming i -C 4 hydrocarbons. Maruya et al , studied the effects of some organic additives on the CO hydrogenation over zirconia and mixed oxide catalysts. They found that the isobutene selectivity in C 4 hydrocarbons was higher in the presence of DME than in the absence.…”

“…They found that the isobutene selectivity in C 4 hydrocarbons was higher in the presence of DME than in the absence. Since the surface adsorbed methoxy species could be produced when CH 3 OH or DME adsorbed on the surface of zirconia-based catalysts, − the methoxy species were suggested as the key intermediates in forming isobutene from CO hydrogenation . However, no evidence has clarified whether the methoxy species were converted to a C 2 intermediate, which is the key step in the formation of isobutene from CO and H 2 .…”