文献类型：期刊文献

英文题名：Tunable Production of Jet-Fuel Range Alkanes and Aromatics by Catalytic Pyrolysis of LDPE over Biomass-Derived Activated Carbons

作者：Wan, Kun[1];Chen, Huan[1];Zheng, Fangjuan[1];Pan, Yankai[1];Zhang, Yayun[1];Long, Donghui[1,2]

机构：[1]East China Univ Sci & Technol, Sch Chem Engn, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Shanghai Key Lab Multiphase Mat Chem Engn, Shanghai 200237, Peoples R China

年份：2020

卷号：59

期号：39

起止页码：17451

外文期刊名：INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH

收录：;EI(收录号：20204709511337);WOS:【SCI-EXPANDED(收录号:WOS:000577113500053)】；

基金：This work was sponsored by Shanghai Sailing Program (20YF1410600) and financially supported by National Natural Science Foundation of China (no. 21576090 and no. 21878091), and Fundamental Research Funds for the Central Universities (222201718002).

语种：英文

外文关键词：Catalysts - Zeolites - Aromatization - Jet fuel - Phosphoric acid - Liquids - Aromatic hydrocarbons - Paraffins - Pyrolysis

摘要：Turning waste plastics (WPs) into valuable fuels and chemicals by catalytic pyrolysis is a promising strategy for alleviating fast fossil oil consumption and white pollution, where activated carbon (AC) is an emerging efficient catalyst but is not yet well studied. Herein, the corncob-derived ACs were prepared differently and used to conduct catalytic pyrolysis of low-density polyethylene (LDPE) to obtain value-added jet fuels. The porosity and acidity of ACs obtained varied under different fabrication conditions. The maximum specific surface area and the acidity could reach up to 1454.73 m(2)/g and 0.44 mmol/g, respectively. The highest liquid yield was 75.3 wt % with 93.13 area % of jet fuel-ranged hydrocarbons by using the AC that was carbonized at 500 degrees C and phosphoric acid to corncob ratio of 0.8. In addition, the highest contents of alkanes and aromatics in liquid oil were 48.21 and 59.21 area % by using AC prepared at 400 and 600 degrees C with phosphoric acid to corncob ratio of 0.8, respectively. Results unveil the AC with strong acidity is beneficial to the generation of aromatics, while AC with weak acidity is favorable to the generation of alkanes. Besides, increasing the catalytic temperature and AC to LDPE ratio are contributed to converting alkanes into aromatics. Therefore, tunable production of jet-fuel range alkanes and aromatics can be achieved by using different ACs of various acidity and reaction temperatures. The results also present a superior yield of liquid oil obtained with AC catalysts to conditional zeolite catalysts, indicating potentially promising practical application. The present work may provide more information for guiding ACs used efficiently in catalytic pyrolysis of WPs into value-added jet fuels.