文献类型：期刊文献

英文题名：Production of renewable alkyl-phenols from catalytic pyrolysis of Douglas fir sawdust over biomass-derived activated carbons

作者：Yang, Zixu[1,2];Lei, Hanwu[2];Zhang, Yayun[2];Qian, Kezhen[2];Villota, Elmar[2];Qian, Moriko[2];Yadavalli, Gayatri[2];Sun, Hua[3]

机构：[1]East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]Washington State Univ, Dept Biol Syst Engn, Richland, WA 99354 USA;[3]Washington Biooils Inc, Richland, WA 99354 USA

年份：2018

卷号：220

起止页码：426

外文期刊名：APPLIED ENERGY

收录：;EI(收录号：20181404973787);WOS:【SCI-EXPANDED(收录号:WOS:000432884500034)】；

基金：This study was partially supported by The Agriculture and Food Research Initiative of National Institute of Food and Agriculture, United States Department of Agriculture (Award Number: 2016-67021-24533; Award Number: 2016-33610-25904; Award Number: 2018-67009-27904). We are grateful to Dr. Aftab Ahamed for helping with the GC MS analysis and Dr. Valerie Lynch-Holm from Franceschi Microscopy & Imaging Center (FMIC), Washington State University for the help with SEM training.

语种：英文

外文关键词：Bio-phenols; Activated carbons; Catalytic pyrolysis; Microwave heating

摘要：The catalytic conversion of Douglas fir sawdust into bio-phenols on activated carbons (AC) obtained by chemical activation of corn stover with H3PO4 was investigated. Taguchi experimental design was used to optimize the preparation of AC using microwave assisted pyrolysis. Based on an overall consideration of AC yield, bio-oil yield, and phenols content, the optimized conditions were phosphoric acid to biomass ratio of 0.8, microwave power of 600 W and reaction time of 20 min. The bio-oils were rich in phenolic compounds (up to 90 area %) that mainly comprised phenol, methyl and ethyl phenol. During the catalytic pyrolysis of biomass with AC, phenolic compounds could either be derived from decomposition of lignin, followed by deoxygenation, or derived from furfurals, which were degradation products of carbohydrates. The catalytic activities of ACs were mainly owing to the well-developed porosity and abundant acidic surface functional groups. The porous structures of ACs were characterized by N-2 isotherms, showing a strong dependence on the acid impregnation ratio and microwave irradiation power. The presence of acidic phosphoric-containing surface functional groups was confirmed by SEM/EDX, FTIR and NH3-TPD.