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纤维素是一种非常有价值的可再生资源,通过其反应可以获得多种有用的物质.对纤维素在超临界水中的反应进行了综述.在没有催化剂的情况下,纤维素在超临界水中水解生成葡萄糖、果糖、低聚物等;对纤维素水解的设备、产物分布以及纤维素水解反应机理进行了阐述.采用Ni,Pt,Ru,KOH等作催化剂,纤维素在超临界水中发生气化反应,生成的气体产物主要为H_2,CO_2和CH_4;介绍了纤维素及其主要水解产物葡萄糖的制氢反应过程.对纤维素超临界水反应技术的发展前景进行了展望.
Cellulose is a very valuable renewable resource, through which a variety of useful substances can be obtained, and the reaction of cellulose in supercritical water is reviewed.In the absence of a catalyst, cellulose in supercritical water Hydrolysis of glucose, fructose, oligomers and so on; cellulose hydrolysis equipment, product distribution and cellulose hydrolysis reaction mechanism are described.Using Ni, Pt, Ru, KOH as catalyst, cellulose in supercritical water gas The main gas products are H_2, CO_2 and CH_4. The process of hydrogen production of cellulose and its major hydrolyzate, glucose, is introduced. The development prospects of cellulose supercritical water reaction are also discussed.