申请人:UBE INDUSTRIES, LTD.
公开号:US20170327453A1
公开(公告)日:2017-11-16
Provided is a method for efficiently producing a levulinic acid ester from a cellulose-containing raw material or a carbohydrate-containing raw material in an alcohol solvent using an inexpensive, easily available catalytic system. In a method for producing a levulinic acid ester by reacting at least one of a cellulose-containing raw material and a carbohydrate-containing raw material in the presence of an alcohol and a catalyst, use is made of, as a catalyst, a combination of: at least one metal compound (exclusive of gallium acetylacetonate and indium acetylacetonate) selected from the group consisting of hydroxide salts, sulfates, nitrates, carboxylates, alkoxides, acetylacetonates, and oxides of at least one metal selected from the group consisting of metals belonging to Group XIII and Group XIV of the Periodic Table; and an organic sulfonic acid.
提供了一种从含纤维素原料或含碳水化合物原料中在醇溶剂中高效制备丙酮酸酯的方法,使用一种廉价易得的催化系统。在一种通过在醇和催化剂存在下反应至少一种含纤维素原料和含碳水化合物原料以制备丙酮酸酯的方法中,使用以下组合作为催化剂:至少选择一种金属化合物(不包括乙酰丙酮酸镓和乙酰丙酮酸铟)从属于周期表的第XIII和XIV组金属中选择的羟基盐、硫酸盐、硝酸盐、羧酸盐、烷氧基、乙酰丙酮酸盐和氧化物,以及有机磺酸。