纤维素在近临界水中的分解动力学和产物分布  

KINETICS AND PRODUCT DISTRIBUTIONS OF CELLULOSE DECOMPOSITION IN NEAR CRITICAL WATER

作　　者：吕秀阳[1] 迫田章义[2] 铃木基之[2] 

机构地区：[1]浙江大学材料与化工学院,浙江杭州310027 [2]东京大学生产技术研究所

出　　处：《化工学报》2001年第6期556-559,共4页CIESC Journal

基　　金：浙江省自然科学基金 !(J990 0 2 );教育部留学回国人员科研启动基金资助项目&&

摘　　要：Knetics and product distributions of cellulose decomposition in near-critical water were studied with a continuous flow-type apparatus for supercritical and near-critical water reactions.The experimental temperature range was from 513?K to 583?K and residence time from 0.5?min to 1.6?min.The effects of temperature and residence time on cellulose residue were demonstrated.The apparent actiation energy evaluated was 147?kJ·mol -1 .In addition,the effects of temperature and residence time on the yield distributions of wter soluble oligomers,glucose and levulose,pyruvic aldehyde,5-hydroxymethyl furfural,furfural were described in detail.The experimental results showed that selective decomposition of cellulose in near critical water was possible.Knetics and product distributions of cellulose decomposition in near-critical water were studied with a continuous flow-type apparatus for supercritical and near-critical water reactions.The experimental temperature range was from 513?K to 583?K and residence time from 0.5?min to 1.6?min.The effects of temperature and residence time on cellulose residue were demonstrated.The apparent actiation energy evaluated was 147?kJ·mol -1 .In addition,the effects of temperature and residence time on the yield distributions of wter soluble oligomers,glucose and levulose,pyruvic aldehyde,5-hydroxymethyl furfural,furfural were described in detail.The experimental results showed that selective decomposition of cellulose in near critical water was possible.

关 键 词：近临界水 纤维素 分解动力学 产物分布 

分 类 号：TQ353.1[化学工程] TQ013.2