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The gas phase methane oxidative carbonylation was studied in the presence of molecular oxygen over silica materials including their mechanical mixtures with rhodium chalcogen chlorides obtained in non-aqueous inorganic media. The formation of Rh4 SCl7,Rh4S9Cl2,Rh4Se5Cl3 and Rh3Se3 Cl solids was confirmed by elemental analysis,IR absorption spectroscopy,XPS and X-ray diffraction. Silica,vanadium-,and molybdenum-containing mesoporous molecular sieves have been used as supports. It was found that productivity of oxygenates(methanol,methyl acetate and acetic acid) depends mainly on the method of the catalyst preparation and the type of the support.
The gas phase methane oxidative carbonylation was studied in the presence of molecular oxygen over silica materials including their mechanical mixtures with rhodium chalcogen chlorides obtained in non-aqueous inorganic media. The formation of Rh4 SCl7, Rh4S9Cl2, Rh4Se5Cl3 and Rh3Se3 Clods was confirmed by elemental analysis, IR absorption spectroscopy, XPS and X-ray diffraction. Silica, vanadium-, and molybdenum-containing mesoporous molecular sieves have been used as supports. It was found that productivity of oxygenates (methanol, methyl acetate and acetic acid) depends mainly on the method of the catalyst preparation and the type of the support.