【摘 要】
：
以纤维素模化物(定量滤纸)为原料,考察金属离子对超低酸水解纤维素的助催化作用,并对助催化机理进行探讨。实验中对K2SO4、MgSO4、Na2SO4、Al2(SO4)3、CuSO4、FeSO4、Fe2(SO4
【机 构】
：
北京化工大学生命科学与技术学院,北京市生物加工过程重点实验室,中国科学院广州能源研究所,中国科学院可再生能源与天然气水合物重点实验室,
论文部分内容阅读
以纤维素模化物(定量滤纸)为原料,考察金属离子对超低酸水解纤维素的助催化作用,并对助催化机理进行探讨。实验中对K2SO4、MgSO4、Na2SO4、Al2(SO4)3、CuSO4、FeSO4、Fe2(SO4)3在3种浓度(0.01%、0.05%、0.10%)下的助催化效果进行对比。结果表明:浓度为0.05%的K2SO4、MgSO4、Na2SO4的催化效果较好,重复实验得出K2SO4的效果更稳定。在实验基础上结合仪器分析,选择K2SO4初步探讨金属盐助催化纤维素的水解机理,为后续的研究工作做理论铺垫。
Cellulose (quantitative filter paper) was used as a raw material to investigate the cocatalytic activity of metal ions on the hydrolysis of ultra-low acid cellulose. The mechanism of cocatalytic activity was discussed. In the experiment, the promoting effects of K2SO4, MgSO4, Na2SO4, Al2 (SO4) 3, CuSO4, FeSO4 and Fe2 (SO4) 3 at three concentrations (0.01%, 0.05% and 0.10%) were compared. The results show that the catalytic effect of K2SO4, MgSO4 and Na2SO4 at the concentration of 0.05% is better, and the effect of K2SO4 is more stable by repeated experiments. Based on the experiment and instrument analysis, K2SO4 was selected to explore the mechanism of metal salt-catalyzed hydrolysis of cellulose in order to pave the way for the follow-up research.
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