采用正交试验法对有机溶剂木质素在异丙醇中的降解进行了研究,得出木质素在异丙醇中降解的较优水平为:催化剂ru/C用量0.20 g、温度280℃、压力2.5 MPA、时间8 H。在该条件下,降解产物中生物油的产率最高可达74.13%,生物油中酚类和醇、酮以及烃类的gC含量总和接近60%。木质素原料和生物油的元素分析说明解聚过程中发生了脱氧;傅里叶红外光谱分析表明木质素的解聚过程中有酚羟基、烷基等新的结构基团产生。The depolymerization of lignin in isopropanol was studied by orthogonal array test.It was found that the excellent levels of the lignin depolymerization in isopropanol were as follows: Ru / C catalyst amount 0.20 g,temperature 280 ℃,pressure2.5 MPa,reaction time 8 h.Under these conditions,the yield of bio-oil could reach 74.13%,and a combined GC content of phenolics,cyclic alcohols,cyclic ketones,and hydrocarbons achieved 60%.The elemental analyses of lignin feedstock and biooil products indicated that deoxygenation was carried out during the depolymerization.The fourier infrared spectrum( FT-IR)further indicated that new functional groups such as phenolic hydroxyl and alkyl were formed.国家973计划资助(2012CB215306
