磺酸负载型碳材料催化水解秸秆木质纤维素的研究

SULFONATE CARBON SUPPORTED CATALYST STRAW HYDROLYSIS OF LIGNOCELLULOSE MATERIALS

本研究以稻草秸秆木质纤维素为反应原料,开展了磺酸负载型碳材料在水热条件下催化木质纤维素水解产生还原糖的研究,考察了磺酸负载量对催化水解木质纤维素作用的影响,并分析了在改性碳材料催化条件下,反应温度,反应时间,催化剂用量,纤维球磨预处理等因素对木质纤维素水解过程的影响。研究结果表明磺酸负载型碳材料,促进其催化水解木质纤维素的性能。在170℃条件下,催化剂投加量为0.2g,反应时间为9h时为木质纤维素水解和还原糖积累的最优条件。同时在纤维素水解前进行48h的球磨预处理能有效提高木质纤维素的水解和利用效率。

In this study, lignoeellulosic rice straw as raw materials, launched a sulfonic acid load type carbon materials under hydrothermal conditions catalyzed hydrolysis of lignocellu- losic sugar research, examining the acid catalyzed hydrolysis of the loading effect of lignocel- lulose Effect and analyzed under conditions of the modified carbon material for a catalyst, re- action temperature, reaction time, catalyst amount, and other factors fiber milling pretreatment hydrolysis of lignocellulose. The results show that the carbon material supported sulfonic acid, which catalyzes the hydrolysis of lignocellulosic facilitate performance. Under the conditions of 170 ℃, catalyst dosage of 0.2g, the reaction time is when the optimum conditions 9h ligno-cellulosic hydrolyzate and sugar accumulation. While the cellulose hydrolysis for 48 hours be-fore milling can improve the pretreatment and hydrolysis of lignocellulosic efficiency.