Catalytic conversion of lignin to bio-oil over PTA/MCM-41 catalyst assisted by ultrasound acoustic cavitation

被引：36

作者：

Du, Boyu ^{[1
]}

Chen, Changzhou ^{[2
]}

Sun, Yang ^{[3
]}

Yu, Mengtian ^{[1
]}

Yang, Ming ^{[1
]}

Wang, Xing ^{[1
,2
,4
]}

Zhou, Jinghui ^{[1
]}

机构：

[1] Dalian Polytech Univ, Liaoning Key Lab Pulp & Papermaking Engn, Dalian 116034, Liaoning, Peoples R China

[2] Guangxi Univ, Light Ind & Food Engn Coll, Nanning 530004, Guangxi, Peoples R China

[3] Gunma Univ, Fac Engn, Dept Chem, Kiryu, Gunma 3768515, Japan

[4] South China Univ Technol, State Key Lab Pulp & Paper Engn, Guangzhou 510640, Peoples R China

来源：

FUEL PROCESSING TECHNOLOGY | 2020年 / 206卷 / 206期

基金：

中国国家自然科学基金;

关键词：

Lignin; Depolymerization; Ultrasound-assisted; Phenolic monomer; Lignin bio-oil; SOLID ACID CATALYST; C-O BOND; PHOSPHOTUNGSTIC ACID; PHENOLIC MONOMERS; SELECTIVE OXIDATION; ORGANOSOLV LIGNIN; TERT-BUTYLATION; PARTICLE-SIZE; WOOD LIGNIN; DEPOLYMERIZATION;

D O I：

10.1016/j.fuproc.2020.106479

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The ultrasound-assisted depolymerization of lignin was successfully conducted over a synthesized PTA/MCM-41 catalyst under different reaction conditions. Firstly, the structure of the prepared PTA/MCM-41 catalyst was characterized by various techniques, and its acidity was determined using Fourier-transform infrared spectroscopy (FT-IR) of pyridine adsorption and temperature-programmed desorption of ammonia (NH3-TPD). Then, the effects of ultrasound frequency, reaction temperature, and reaction time on the distribution and yield of the products of the ultrasound-assisted depolymerization of lignin were studied. The optimum reaction conditions were obtained at an ultrasound frequency of 30%, a reaction temperature of 300 degrees C, and a reaction time of 6 h. Under the optimum reaction conditions, the conversion of lignin depolymerization was equal to 94.79%, and the yield of phenolic monomers (PM) and lignin bio-oil was 8.37% and 90.58% respectively.

引用

页数：12

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