生物质化学工程2026，Vol.60Issue(3)：29-37,9.DOI:10.3969/j.issn.1673-5854.2026.03.004
木质甾醇分子蒸馏废弃物的催化酯化及柱层析精制植物蜡研究
Catalytic Esterification and Column Chromatographic Purification of Plant Wax From Wood Sterol Molecular Distillation Residue
摘要
Abstract
Using lignosterol molecular distillation waste as raw material,a green process route for the synthesis of high-purity plant wax based on directional catalytic conversion of fatty acids was developed.The plant wax was refined by column chromatography and the performance of the refined plant wax was analyzed.The results showed that the catalytic esterification process conditions optimized by single-factor and orthogonal experiments were as follows:20 g raw material,3 g p-toluenesulfonic acid,10 g docosanol,reaction temperature of 100℃and reaction time of 5 h.Under these conditions,the purity of crude plant wax product reached 80.15%.After further purification by silica gel column chromatography,the purity of plant wax product was as high as 94.10%,the acid value of product was reduced from 123.44 mg/g of raw material to 0.40 mg/g,the saponification value was reduced from 154.5 mg/g of raw material to 60 mg/g,and the deacidification rate was more than 99%.And the obtained product exhibited a white color and excellent thermal stability.Compared with other commercial waxes,the refined plant wax possessed comprehensive advantages of extremely low acid value(0.4 mg/g),white color,moderate melting point(45℃),suitable hardness(0.5 HA),and low volatile content(0.22%).关键词
木质甾醇副产物/植物蜡/催化转化/柱层析精制/硅胶/高值化利用Key words
lignosterol by-products/plant wax/catalytic conversion/column chromatographic refining/silica gel/valorization分类
化学化工引用本文复制引用
傅逸雯,沈媛媛,曾一鹿,严嘉磊,陈俐吭,鲍宗必..木质甾醇分子蒸馏废弃物的催化酯化及柱层析精制植物蜡研究[J].生物质化学工程,2026,60(3):29-37,9.基金项目
国家重点研发计划资助项目(2021YFC2103800) （2021YFC2103800）
