【摘 要】
：
Extremely low phosphotungstic acid combined with precious-metal catalyst(Ru/C or Pt/C or Pd/C)was used for one-pot conversion of cellobiose and cellulose in
【机 构】
：
State Key Laboratory of Pulp and Paper Engineering,South China University of Technology,Guangzhou,51
【出 处】
：
The 4th International Conference on Biomass Energy Technolog
论文部分内容阅读
Extremely low phosphotungstic acid combined with precious-metal catalyst(Ru/C or Pt/C or Pd/C)was used for one-pot conversion of cellobiose and cellulose into polyols in presence of hydrogen.High yields of ethylene glycol(EG)and 1,2-propylene glycol(1,2-PG)were obtained over extremely low phosphotungstic acid combined with Ru/C catalyst,and Ru/C could be used many times without remarkable decrease of EG and 1,2-PG yields.Besides,the effect of reaction conditions such as reaction time,H2 pressure,etc on the conversion of cellobiose and the yield of polyols were studied in detail.The highest EG yield of 36.1%was attained at 503K and 5 Mpa H2 for 1h with Ru/C usage of 0.1 g in 0.02wt%phosphotungstic acid from cellobiose conversion.However,cellulose cannot be completely catalyzed conversion duo to its robust crystalline structure and insolubility in extremely low phosphotungstic acid.
其他文献
This work mainly describes the process of sorbitol and mannitol conversion to liquid heavier hydrocarbons via reduction with hydriodic acid under mild react
纳滤以其独特的分离特性已被广泛应用于饮用水净化、食品与医药废水、纺织印染废水处理等方面,研究与开发新型纳滤膜已成为当今膜分离技术领域新的研究热点;但是国内纳滤膜的
本文主要是围绕虎纹蛙展开的试验,以“稻—蛙”生态种养和“瓜—蛙—鱼”生态种养两大生态农业模式为研究对象进行探讨,是在“林—蛙—鱼”模式试验的基础上进行的新模式尝试
Grassclipping,corn straw,catalpa sawdust and pine sawdust were pretreated with high-pressure homogenization(HPH)to enhance the enzymatic digestibility.With
本文首次对中国摇蚊亚科(Chironominae)中的摇蚊属（Chironomus）进行了系统学研究。
论文分为四部分，即引言、总论、系统学和生物地理学分析。
引言部分介绍了摇蚊属的
Lignin is the abundant,unique and renewable aromatic polymer on the globe.It has long been considered as the potential feedstock for bulk of biochemical and
Liquid lipase-mediated alcoholysis for biodiesel production has drawn an increasing interest worldwide due to the faster reaction rate and lower cost compar
A deactivation study of ZSM-5 in heterogeneous catalysis used in the pyrolysis of biomass-derived compound has been carried out.The experiments were perform
随着工业化进程的飞速增长,人们对能源需求越来越大,与此同时,对环境的破坏也日益严重。光催化技术具有利用清洁无污染的太阳能等优势,可广泛应用于新能源、环境修复等领域,被公认为是解决困扰当代社会发展的“能源枯竭”和“环境污染”两大问题最为理想的方法之一。二氧化钛半导体具有廉价,化学性质稳定,无毒,氧化能力强等优点,是目前研究和应用最为广泛的光催化剂之一。本文研究助催化剂改性二氧化钛,以期提高光催化剂的
以结球甘蓝(Brassica oleracea L.)‘519’品系为试材,通过结球期茎尖和叶片以及莲座期茎尖和叶片的转录组对比分析,筛选出4个显著差异表达HB类基因,分别为BoHAT2、BoHB12、B