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Effective Extraction of Aromatic Monomers from Lignin Oil Using a Binary Petroleum Ether/dichloromethane Solvent by Weisheng Yang; Xiu Wang; Shuzhen Ni; Xinliang Liu; Rui Liu; Chaoquan Hu; Hongqi Dai is a Engineering article available to read on EtoBox.

What is Effective Extraction of Aromatic Monomers from Lignin Oil Using a Binary Petroleum Ether/dichloromethane Solvent about?

The depolymerization of lignin to high value-added aromatic monomers has attracted considerable attention. Nevertheless, an effective separation process is essential for obtaining aromatic monomers from lignin depolymerization products. In this study, a binary petroleum ether (PE)/dichloromethane (DCM) solvent was used to separate aromatic monomers from lignin oil obtained from phosphomolybdic acid (POM) catalytic oxidation. The effects of the solvent polarity and temperature on the extraction efficiency were examined. The polarity of the binary solvent mixture was adjusted by tuning the PE:DCM ratio. Using the PE/DCM (85/15) mixture as the extraction solvent, 49.0% of aromatic monomers were recovered from lignin oil; the extraction fraction contained 80% aromatic monomers. Through sequential extraction of the lignin oil three times, the aromatic monomers recovery reached 69.2%, and monomers content in the extraction fraction was improved slightly to 83.0%. Lowering the extraction temperature resulted in a higher separation efficiency of aromatic monomers. This study provides a simple and efficient way to separate aromatic monomers from lignin depolymerization products.

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Author

Weisheng Yang; Xiu Wang; Shuzhen Ni; Xinliang Liu; Rui Liu; Chaoquan Hu; Hongqi Dai

Publisher

Elsevier BV

Published

2021

Language

EN

Field

Engineering (Physical Sciences)