超低酸性环境中Ru/C催化纤维二糖一步法制备山梨醇的研究  

Direct Catalytic Conversion of Cellobiose into Sorbitol in Extremely Low Acid over Ruthenium Catalysts

作　　者：李计彪[1] 武书彬[1] 张军[1] 

机构地区：[1]华南理工大学制浆造纸国家重点实验室,广东广州510640

出　　处：《林产化学与工业》2012年第6期37-40,共4页Chemistry and Industry of Forest Products

基　　金：国家自然科学基金资助项目(21176095);广州市科技计划项目(2010Y1-C071);广东省部研重大专项(2011A0902006号)

摘　　要：以Ru/C为催化剂,在超低酸环境和氢气气氛下,将纤维二糖一步转化制备山梨醇。考察了反应温度、反应时间以及催化剂用量对山梨醇产率的影响。实验结果表明,在0.05%H3PO4环境,Ru/C催化剂用量15%,转速为600 r/min,反应温度为458 K以及3 MPa氢气条件下反应1 h,产物山梨醇的产率最高,可达到87.1%。同时,催化剂重复利用研究表明Ru/C是一种较理想的氢化反应催化剂,可重复利用且催化效率较高。Ru/C catalyst and extremely low acid were employed for one-step conversion of cellobiose into sorbitol in the presence of hydrogen. Effects of reaction temperature, reaction time and catalyst usage on sorbitol yield were discussed. Experimental re- sults showed that the highest sorbitol yield of 87.1% was obtained at reaction temperature of 458 K and catalyst usage of 15 % for 1 h under 3 MPa H2 with the stirring rate of 600 r/min. Meanwhile, catalyst recycling showed that Ru/C was an ideal hydro- genation catalyst with high catalytic efficiency, which could be recycled several times.

关 键 词：RU C 超低酸 纤维二糖 山梨醇 

分 类 号：TQ35[化学工程]