文献类型：期刊文献

英文题名：Renewable phenol production from lignin with acid pretreatment and ex-situ catalytic pyrolysis

作者：Duan, Dengle[1,2];Lei, Hanwu[2];Wang, Yunpu[1];Ruan, Roger[1,4,5];Liu, Yuhuan[1];Ding, Lijun[6];Zhang, Yayun[3];Liu, Lang[7]

机构：[1]Nanchang Univ, Minist Educ, Engn Res Ctr Biomass Convers, State Key Lab Food Sci & Technol, Nanchang 330047, Jiangxi, Peoples R China;[2]Washington State Univ, Dept Biol Syst Engn, 2710 Crimson Way, Richland, WA 99354 USA;[3]East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[4]Univ Minnesota, Ctr Biorefining, 1390 Eckles Ave, St Paul, MN 55108 USA;[5]Univ Minnesota, Dept Bioprod & Biosyst Engn, 1390 Eckles Ave, St Paul, MN 55108 USA;[6]Guangdong Univ Technol, Fac Chem Engn & Light Ind, Guangzhou 510006, Guangdong, Peoples R China;[7]Chongqing Univ, Sch Energy & Power Engn, Minist Educ, Key Lab Low Grade Energy Utilizat Technol & Syst, Chongqing 400044, Peoples R China

年份：2019

卷号：231

起止页码：331

外文期刊名：JOURNAL OF CLEANER PRODUCTION

收录：;EI(收录号：20192307003657);WOS:【SCI-EXPANDED(收录号:WOS:000474680100030)】；

基金：We would like to acknowledge the Agriculture and Food Research Initiative Competitive Grant No. 2016-67021-24533, 2018-67009-27904, and 2014-38502-22598 from the National Institute of Food and Agriculture, United States Department of Agriculture. Furthermore, we would like to thank the National Natural Science Foundation of China (No. 21766019, 21878137), Key Research and Development Program of Jiangxi Province (20171BBF60023), China Scholarship Council (No. 201706820027) and Xcel Energy. We are grateful to Dr. Aftab Ahamed for helping with the GC/MS analysis.

语种：英文

外文关键词：Lignin; Catalytic pyrolysis; Activated carbon; Pretreatment; Phenol-rich bio-oil

摘要：A novel pathway to clean production of phenol-rich bio-oil and syngas by catalytic pyrolysis of pretreated lignin was investigated for the first time. The process integrated pretreatment and catalysis. The results revealed that the optimal condition for phenol selectivity (95.5%) from unpretreated lignin pyrolysis was achieved at a pyrolytic temperature of 550 degrees C with catalyst/lignin ratio of 0.7. Lignin pretreatment boosted the volatile production as well as syngas formation. A significant increase in the phenol concentration (from 0.6 to 7.0 mg/mL) for pretreated lignin was achieved at pretreated temperature of 50 degrees C for 60 min. During the deactivation test, the catalyst exhibited a benign catalytic performance for phenol selectivity after using four times. Further, the "phenol pool" and free radical were proposed to uncover the mechanism of phenol generation from catalytic conversion of pretreated lignin. These findings pave a new and clean route to produce high-purity phenol, which could ultimately advance the utilization of lignin through facile fix-bed catalytic pyrolysis technology. (C) 2019 Elsevier Ltd. All rights reserved.