SOLID CATALYSTS AND METHOD FOR PREPARING SUGARS USING THE SAME

A solid catalyst is provided. The solid catalyst includes a core particle composed of activated carbon, lignin or iron oxide, and a plurality of hydroxyl groups and sulfonic acid groups formed on the surface of the core particle. A method for preparing a sugar is also provided. The method includes mixing organic acid and the disclosed solid catalyst to form a mixing solution, adding a cellulosic biomass to the mixing solution to proceed to a dissolution reaction, and adding water to the mixing solution to proceed to a hydrolysis reaction to obtain a hydrolysis product. The solid catalyst has double functional groups of hydroxyl groups and sulfonic acid groups, which can improve the hydrolyssi efficiency of cellulose. 本揭露提供种固体催化剂，包括：核心颗粒，是由活性碳、木质素或氧化铁所构成；以及多个羟基与磺酸基，形成于该核心颗粒的表面。本揭露另提供种醣类的制备方法，包括：混合有机酸与上述固体催化剂，以形成混合液；加入纤维质生质物至该混合液中，以进行溶解反应；以及加入水至该混合液中，以进行水解反应，获得水解产物。本发明的固体催化剂兼具羟基与磺酸基的双官能基，其可使得纤维素的水解效率得以改善。