METHOD OF EXTENDING BIOMASS CONVERSION CATALYST LIFE

A method of extending the catalyst life of a hydrogenolysis catalyst activity in the presence of biomass and aqueous solution is described. Lignocellulosic biomass solids and aqueous solution is provided to in a hydrothermal digestion unit in the presence of a digestive solvent, and a supported hydrogenolysis catalyst containing (a) sulfur, (b) Mo or W, and (c) Co, Ni or mixture thereof, incorporated into a solid metal oxide support. The lignocellulosic biomass solids in the hydrothermal digestion unit is heated to a temperature in the range of 180 DEG C to less than 300 DEG C in the presenceof digestive solvent, hydrogen, and in the range of 0.15wt.% to 12.5wt.%, based on catalyst, of H2S or H2S source at least partially soluble in aqueous solution, and the supported hydrogenolysis catalyst forming a product solution containing plurality of oxygenated hydrocarbons, the hydrothermal digestion unit maintaining protective sulfur concentration. 描述了种在生物质和水溶液存在下延长氢解催化剂活性的催化剂寿命的方法。在消化溶剂存在下将木质纤维素生物质固体和水溶液和负载氢解催化剂提供到