一种用于生物质水解制备乙酰丙酸的固体酸催化剂

本发明固体酸催化剂技术领域，具体涉及一种用于生物质水解制备乙酰丙酸的固体酸催化剂。该催化剂由活性组分、助剂和载体组成，所述活性组分为硫酸化的氧化锆，助剂为氧化镧和/或氧化钼，载体为多孔氧化物分子筛；以重量含量计，该催化剂组成为：5~20%的硫酸根，3~30%的氧化锆，不超过10%的氧化镧，不超过10%的氧化钼，其它为载体。本申请所提供的用于生物质水解制备乙酰丙酸的固体酸催化剂，由于形态属于固体，与传统的液体酸催化剂相比，在保持较好催化效率同时，具有易于分离和重复利用的优点，因而可大幅减少对环境的污染以及对设备的腐蚀，表现出较好地实用价值和推广应用意义。 The invention belongs to the technical field of solid acid catalysts, and particularly relates to a solid acid catalyst for hydrolyzing biomass to prepare levulinic acid. The catalyst is prepared froman active component, an additive and a carrier, wherein the active component is sulfated zirconium oxide; the additive is lanthanum oxide and/or molybdenum oxide; the carrier is a porous oxide molecular sieve; the catalyst is prepared from the following raw materials by weight: 5 to 20 percent of sulfate radical, 3 to 30 percent of the zirconium oxide, no more than 10 percent of the lanthanum oxide, no more than 10 percent of the molybdenum oxide and the balance of the carrier. The solid acid catalyst for hydrolyzing the biomass to prepar