Crystallization of vanillin from kraft lignin oxidation

被引：26

作者：

Gomes, E. D. ^{[1
]}

Rodrigues, A. E. ^{[1
]}

机构：

[1] Univ Porto, Fac Engn, Lab Separat & React Engn, Associate Lab LSRE LCM,Dept Chem Engn, Rua Dr Roberto Frias S-N, P-4200465 Porto, Portugal

来源：

SEPARATION AND PURIFICATION TECHNOLOGY | 2020年 / 247卷

关键词：

Biorefinery; Kraft lignin; Vanillin; Crystallization; Biomass; LIQUID PHASE-SEPARATION; ANTISOLVENT CRYSTALLIZATION; SOLUBILITY; NUCLEATION; MECHANISMS; EXTRACT; REACTOR; ACIDS; LINE;

D O I：

10.1016/j.seppur.2020.116977

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Vanillin is a highly functionalized phenolic compound that can be sourced from alkaline wet depolymerization of lignin. The lignin-based vanillin is still not widely available due to the laborious purification process. In this work, vanillin rich solution is produced through preparative chromatography, this solution is extracted with ethyl acetate and vanillin is then crystallized from aqueous solution at room temperature. The pH of extraction plays an important role on the success of the crystallization. Purity is assessed by HPLC, GC-MS and melting point. The melting point of the product crystallized was in the range of 77-79 degrees C. Vanillin with a purity of up to 96% was obtained.

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页数：9

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