文献类型：期刊文献

英文题名：Conversion of lignin into light olefins and aromatics over Fe/ZSM-5 catalytic fast pyrolysis: Significance of Fe contents and temperature

作者：Yang, Mingfa[1];Shao, Jingai[1,2];Yang, Zixu[3];Yang, Haiping[1];Wang, Xianhua[1];Wu, Zhengshun[4];Chen, Hanping[1,2]

机构：[1]Huazhong Univ Sci & Technol, Sch Energy & Power Engn, State Key Lab Coal Combust, Wuhan 430074, Hubei, Peoples R China;[2]Huazhong Univ Sci & Technol, Sch Energy & Power Engn, Dept New Energy Sci & Engn, Wuhan 430074, Hubei, Peoples R China;[3]East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[4]Cent China Normal Univ, Chem Coll, Wuhan 430079, Hubei, Peoples R China

年份：2019

卷号：137

起止页码：259

外文期刊名：JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS

收录：;EI(收录号：20184906216521);WOS:【SCI-EXPANDED(收录号:WOS:000455358900029)】；

基金：The authors wish to express sincere thanks for the financial support from the National Natural Science Foundation of China (51506071, 51676081). The authors are also grateful for catalyst characterization by the Analytical and Testing Center in Huazhong University of Science & Technology (http://atc.hust.edu.cn).

语种：英文

外文关键词：Light olefin; Aromatic; Fe/ZSM-5; Catalytic pyrolysis; Lignin

摘要：The conversion of lignin into light olefins and aromatic compounds via catalytic fast pyrolysis was performed in a fixed bed reactor over a range of Fe-modified ZSM-5 catalysts at different temperatures. More specifically, catalysts containing 0, 1, 3, 6, and 9 wt.% Fe were prepared by an impregnation method, and the resulting catalysts were characterized by XRD, NH3-TPD, H-2-TPR and BET analysis. The catalyst structure remained intact upon increasing the Fe loading, although the surface area, pore volume, and number of acidic sites of the catalysts varied, and the total acidity increased upon increasing the Fe loading. The maximum carbon yield of light olefins plus aromatic compounds was 12.8%, and this was obtained with a 3 wt.% Fe loading at 600 degrees C. This yield decreased upon further increasing the Fe loading and upon increasing the temperature to 700 degrees C. Moreover, the selectivity of C2H4 was more than 80%, and it was decreased with the Fe loading and increased with temperature increasing. The total acidity had a direct relationship with aromatic production, while light olefins were mainly affected by medium acid sites.