木质素在异丙醇中的降解研究

doi:10.3969/j.issn.0253-2417.2015.02.010

Abstract

Abstract: 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 ℃, pressure 2.5 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 bio-oil 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.

Key words: lignin, isopropanol, orthogonal test, depolymerization

CLC Number:

TQ352

TIAN Xiao-dong, YE Yue-yuan, LIU Yun-quan. Depolymerization of Lignin in Isopropanol Solvent[J]. Chemistry and Industry of Forest Products, 2015, 35(2): 67-72.

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Depolymerization of Lignin in Isopropanol Solvent

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