期刊
SCIENCE CHINA-CHEMISTRY
卷 53, 期 7, 页码 1476-1480出版社
SCIENCE PRESS
DOI: 10.1007/s11426-010-4002-3
关键词
cellulose; polyols; Ru catalysts; solid bases; aqueous basic solutions
资金
- National Natural Science Foundation of China [20733009, 20825310, 20973011]
- National Basic Research Program of China [2006CB806100]
It is of great significance and challenge to achieve direct conversion of cellulose to specific polyols, e.g., ethylene glycol and propylene glycol. For such selective conversion, a novel one-pot approach was studied by combination of alkaline hydrolysis and hydrogenation on supported Ru catalysts. A wide range of bases including solid bases, e.g., Ca(OH)(2) and La2O3, and phosphate buffers were examined in the cellulose reaction in water, and the cellulose conversions and polyol products depended largely on the basicity or pH values in the aqueous solutions. Ethylene glycol, 1,2-propanediol, and especially 1,2,5-pentanetriol were obtained with selectivities of 15%, 14% and 22%, respectively, at 38% cellulose conversion at pH 8 in phosphate buffer solution. These preliminary results provide potentials for efficient conversion of cellulose to targeted polyols by using the advantages of bases.
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