文献类型：期刊文献

英文题名：Renewable bio-phenols from in situ and ex situ catalytic pyrolysis of Douglas fir pellet over biobased activated carbons

作者：Yang, Zixu[1,2];Lei, Hanwu[2];Qian, Kezhen[2];Zhang, Yayun[2];Villota, Elmar[2]

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

年份：2018

卷号：2

期号：4

起止页码：894

外文期刊名：SUSTAINABLE ENERGY & FUELS

收录：;EI(收录号：20181404979108);WOS:【SCI-EXPANDED(收录号:WOS:000428778800019)】；

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). 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：Phenols - Catalysis - Catalysts - Chemical activation - Pelletizing - Pyrolysis

摘要：In situ and ex situ catalytic upgrading of pyrolysis vapors from Douglas fir pellets in the presence of activated carbon (AC) prepared by chemical activation was studied in a microwave pyrolyzer. The in situ catalytic upgrading configuration gave lower bio-oil yields (10.25-25.5 wt%) than ex situ catalytic upgrading configuration (20.03-32 wt%). The bio-oil yield from the in situ upgrading process was significantly affected by both catalytic reaction temperature and catalyst to biomass ratio. However, the bio-oil yield from ex situ upgrading process was only significantly affected by catalyst to biomass ratio. Bio-oils compositional analysis indicated that the ex situ upgrading process generated higher phenols concentration (4.14-19.76 mg ml(-1)) than in situ upgrading (4.14-9.90 mg ml(-1)). However, the selectivity of phenols from in situ upgrading process reflected by the peak area percentages was higher than that from ex situ upgrading. The catalyst recycling tests showed that the prepared AC catalyst can be reused for three times in phenol-rich bio-oil production via catalytic microwave pyrolysis.