School of Chemistry and Chemical Engineering, State Key Laboratory of Pulp & Paper Engineering, South China University of Technology, No. 381, Wushan Road, Guangzhou 510640, China.
Bioresour Technol. 2012 Aug;118:648-51. doi: 10.1016/j.biortech.2012.05.127. Epub 2012 Jun 1.
Selective production of 4-ethylphenolics from lignin via mild hydrogenolysis was reported in this short communication. The hydrogenolysis of lignin was carried out in an autoclave with 65 vol.% ethanol/water as solvent, with 5% Ru/C, Pd/C and Pt/C as catalysts. The influences of catalysts, lignin species, and reaction conditions including reaction temperature, reaction time, and initial H(2) pressure on yield of target compounds were investigated. 3.1% 4-Ethylphenol and 1.3% 4-ethylguaiacol based on lignin could be obtained simultaneously from hydrogenolysis of corn stalk lignin, which is approximate to the yield obtained from petrochemical route. The results of this work showed that this novel method is a quite promising technique for the substitution of petrochemical route.
本文报道了一种通过温和氢解从木质素中选择性制备 4-乙基苯酚类化合物的方法。在装有 65vol.%乙醇/水的高压釜中，以 5%Ru/C、Pd/C 和 Pt/C 为催化剂，进行木质素氢解反应。考察了催化剂、木质素种类以及反应条件（包括反应温度、反应时间和初始氢气压力）对目标化合物收率的影响。从玉米秸秆木质素氢解中可同时获得 3.1%的 4-乙基苯酚和 1.3%的 4-乙基愈创木酚，与石化路线的收率相近。该工作结果表明，该新方法是替代石化路线的一种很有前途的技术。
