Efficient hydrolysis of cellulose to glucose catalyzed by lignin-derived mesoporous carbon solid aci

• 作 者: Shuai Wang Guobao Sima Ying Cui Longjun Chang Linhuo Gan
• 机 构: College of Chemical Engineering, Huaqiao University, Xiamen 361021, China“,”Key Laboratory of Pulp a
• 出 处: 中国化学工程学报（英文版）
• 发表日期: 2020年7期
• 关键词: Biomass Evaporation-induced self-assembly Salt-induced self-assembly Mesoporous

Two kinds of mesoporous carbon solid acids (LDMCE-SO3H and LDMCS-SO3H) were successfully prepared using masson pine alkali lignin as carbon source by evaporation-induced self-assembly (EISA) and salt-induced self-assembly (SISA) followed by sulfonation, respectively. In terms of preparation process, SISA (self-assembly in water and preparation time of 2 days) is greener and simpler than EISA (self-assembly in ethanol and preparation time of 7 days). The prepared LDMCE-SO3H and LDMCS-SO3H exhibit obvious differences in structural character-istics such as pore channel structure, specific surface area, mesopore volume and the density of-SO3H groups. Furthermore, the catalytic performances of LDMCE-SO3H and LDMCS-SO3H were investigated in the hydrolysis of microcrystalline cellulose in water, and the glucose yields of 48.99％and 54.42％were obtained under the cor-responding optimal reaction conditions. More importantly, the glucose yields still reached 28.85％and 30.35％after five runs, and restored to 39.02％and 45.98％through catalysts regeneration, respectively, demonstrating that LDMCE-SO3H and LDMCS-SO3H have excellent recyclability and regenerability.