REGENERATING METHOD OF RUTHENIUM CATALYST

摘要

PURPOSE:To regenerate and reuse a silica carrying ruthenium catalyst degradated in activity by hydrogenation treatment by treating the silica carrying ruthenium catalyst successively with gaseous oxygen and next, gaseous hydrogen. CONSTITUTION:The silica carrying ruthenium catalyst is used for the hydrogenation reaction of a carbonyl compound, the hydrogenation reaction of carbon monoxide or the like. And the silica carrying ruthenium catalyst degradated in activity is heat-treated, at first, at >=60 deg.C, preferably 90-300 deg.C and further preferably 150-200 deg.C, in an oxygen containing gas and next, at usually 20-200 deg.C, preferably 50-200 deg.C, in a hydrogen containing gas. Thus, the silica carrying ruthenium catalyst is efficiently regenerated.