THE ROLE OF SULFONATED ACTIVATED CARBONS AS CATALYSTS FOR THE HYDROLYSIS OF CELLOBIOSE

ABSTRACT In this work the production of glucose via hydrolysis of cellobiose using sulfonated active carbons as catalysts was studied. Commercial carbons presenting different types of porous system (micropores and mesopores) have been treated with sulfuric acid at different temperatures, being characterized afterwards. Such carbons have been tested as catalysts in the reaction of cellobiose hydrolysis. The results indicated that the type and density of sulfonic sites are not the only parameters responsible for the activity of the catalysts. Indeed, the porosity of the catalysts also plays an important role in the determination of the catalyst activity.

摘要 本研究以磺化活性炭（sulfonated active carbons）为催化剂，针对通过纤维二糖（cellobiose）水解（hydrolysis）制备葡萄糖的工艺展开探究。本研究选取具有不同孔道结构（微孔（micropores）与介孔（mesopores））的商用活性炭，在不同温度下经硫酸（sulfuric acid）处理后对其进行了系统表征。将上述改性活性炭作为催化剂应用于纤维二糖水解反应中开展催化性能测试。实验结果表明，磺酸位点（sulfonic sites）的类型与密度并非决定催化剂活性的唯一参数；事实上，催化剂的孔道结构同样对其催化活性具有显著影响。