Abstract: The invention discloses a technology for producing ester of carboxylic acid using cellulosic biomass as starting material. This technology comprises the following key steps: converting all of the organic polymers, including such high molecular-weight polymers as carbohydrate components and lignin, in cellulosic biomass into water soluble, small molecular organics completely in relatively short time under relatively mild conditions; separating the resultant water soluble compounds containing aromatic rings by adjusting the acidity/basicity of the reaction solution or by using adsorption resin; and converting the water soluble compounds containing aromatic rings into ester of carboxylic acid by hydrogenation and esterification in a corresponding alcohol solution.

Abstract: A method of refining cellulosic biomass, including synchronous hydrolyzation of at least 85 wt % organic polymers, based on the total weight of the cellulosic biomass, in the cellulosic biomass into small molecular organic compounds. The synchronous hydrolyzation is catalytic hydrolyzation for which the catalyst used is a substance represented by L-M-S-H or L-M=S, wherein “M” represents metal, carbon or silicon, “S” represents a heteroatom, “L” represents one or more ligands, and “H” represents hydrogen.

Abstract: A continuous reaction system is provided, which specifically relates to a continuous reaction system comprising subcritical and/or supercritical liquid as solvents and a reactant as solid. The invention can effectively prevent cavitations in the reaction system effectively, and realize maximum conversion of the solid reactant material.

Abstract: The invention discloses a technology for producing ester of carboxylic acid using cellulosic biomass as starting material. This technology comprises the following key steps: converting all of the organic polymers, including such high molecular-weight polymers as carbohydrate components and lignin, in cellulosic biomass into water soluble, small molecular organics completely in relatively short time under relatively mild conditions; separating the resultant water soluble compounds containing aromatic rings by adjusting the acidity/basicity of the reaction solution or by using adsorption resin; and converting the water soluble compounds containing aromatic rings into ester of carboxylic acid by hydrogenation and esterification in a corresponding alcohol solution.

Abstract: The invention provides a process for direct liquification of cellulosic biomass, which may be used to liquefy all of the organics in cellulosic biomass, including all high molecular polymeric components such as carbohydrates and lignins, into small molecular organics in a short time under mild conditions. In other words, there is provided a technology capable of converting cellulosic biomass into oil. The resultant renewable high-quality oil may be converted into liquid fuels such as gasoline etc., or used as starting materials in chemical engineering industry. The technology for direct liquification of cellulosic biomass as disclosed in the invention is the first one-step process in the world for direct liquification of cellulosic biomass without black tar formation and gasification.