桉树木粉的有机磺酸催化热化学液化研究  

Study on Liquefaction of Eucalyptus Wood Powder in Polyhydric Alcohol Catalyzed by Organic Sulfonic Acid

作　　者：张海荣[1,2] 计红果[1] 石锦志[1] 付铁柱[1] 庞浩[1] 廖兵[1] 

机构地区：[1]中国科学院广州化学研究所纤维素化学重点实验室,广东广州510650 [2]中国科学院研究生院,北京100039

出　　处：《林产化学与工业》2010年第6期35-39,共5页Chemistry and Industry of Forest Products

基　　金：国家自然科学基金委员会NSFC-广东联合基金(U0834005);广东省国际合作项目(2008B050100016);广东省自然科学基金研究团队项目(E06200692)

摘　　要：研究了对甲苯磺酸催化桉树木粉在多元醇体系的液化反应,利用在线红外光谱技术,研究了桉树木粉的醇解液化反应过程,探索了不同反应条件对液化反应的影响。通过对液化产物的分析,揭示了液化产物的性质随反应时间变化的规律。实验结果表明：桉树木粉在聚乙二醇-丙三醇（质量比4∶1）的液化溶剂中,当对甲苯磺酸用量为3%、反应温度160℃、液固质量比4∶1、液化反应时间180 min时,其液化产率高达89.97%。液化产物的羟值随反应时间的增加在460~340 mg/g区间逐渐降低、酸值在13~20 mg/g区间逐渐增加。Liquefaction of wood was conducted in polyhydric alcohol catalyzed by p-toluene sulfonic acid under different reaction conditions.The liquefied products were analyzed to understand the change of its properties and components during liquefaction process.When liquid to solid mass ratio was 4∶1 and p-toluene sulfonic acid was 3 %,liquefaction yield was 89.97 % at 160 ℃ after 180 min.When the time was prolonged,hydroxyl value of the liquefied product decreased gradually from 460 to 340 mg/g,and acid value increased gradually from 13 to 20 mg/g.In addition,the real-time IR was used to detect the reaction during the whole experiment.

关 键 词：桉树木粉 液化 多元醇 对甲苯磺酸 在线红外 

分 类 号：TQ353[化学工程]