文献类型：期刊文献

英文题名：Catalytic fast pyrolysis of low density polyethylene into naphtha with high selectivity by dual-catalyst tandem catalysis

作者：Dai, Leilei[1,2];Zhou, Nan[1,2];Li, Hui[1,2];Wang, Yunpu[3];Liu, Yuhuan[3];Cobb, Kirk[1,2];Cheng, Yanling[1,2,4];Lei, Hanwu[5];Chen, Paul[1,2];Ruan, Roger[1,2]

第一作者：Dai, Leilei

通讯作者：Ruan, R[1];Ruan, R[2]

机构：[1]Univ Minnesota, Ctr Biorefining, 1390 Eckles Ave, St Paul, MN 55108 USA;[2]Univ Minnesota, Dept Bioprod & Biosyst Engn, 1390 Eckles Ave, St Paul, MN 55108 USA;[3]Nanchang Univ, Engn Res Ctr Biomass Convers, Minist Educ, Nanchang 330047, Jiangxi, Peoples R China;[4]Beijing Union Univ, Biochem Engn Coll, 18,Fatouxili 3 Area, Beijing 100023, Peoples R China;[5]Washington State Univ, Dept Biol Syst Engn, Richland, WA 99354 USA

第一机构：Univ Minnesota, Ctr Biorefining, 1390 Eckles Ave, St Paul, MN 55108 USA

通讯机构：[1]corresponding author), Univ Minnesota, Ctr Biorefining, 1390 Eckles Ave, St Paul, MN 55108 USA;[2]corresponding author), Univ Minnesota, Dept Bioprod & Biosyst Engn, 1390 Eckles Ave, St Paul, MN 55108 USA.

年份：2021

卷号：771

外文期刊名：SCIENCE OF THE TOTAL ENVIRONMENT

收录：;EI(收录号：20210609894902);Scopus(收录号：2-s2.0-85100391959);WOS:【SCI-EXPANDED(收录号:WOS:000627895900072)】；

基金：We acknowledge the financial support from National Natural Science Foundation of China (No. 21766019, 21878137), Natural Science Foundation of Jiangxi Province, China (20181BAB206030), China Scholarship Council (CSC), Xcel Energy, and University of Minnesota Center for Biorefining.

语种：英文

外文关键词：Polyethylene; Catalytic pyrolysis; Naphtha; ZSM-5 zeolite; Al2O3

摘要：In this work, catalytic fast pyrolysis of low density polyethylene (LDPE) into highly valuable naphtha by the relay catalysis (Al2O3 followed by ZSM-5 zeolite) was conducted. Effects of different catalysts, pyrolysis temperatures, catalyst to plastic ratio, and Al2O3 to ZSM-5 ratio, on product distribution and selectivity were studied. Al2O3 shows an excellent performance for catalytic reforming of LDPE pyrolysis vapors, mainly producing C-5-C-23 olefins that are the important precursors to formaromatics via Diels-Alder, aromatization, and polymerization reactions in the pores of ZSM-5 catalyst. Experimental results also show that the selectivity of monoaromatics and C-5-C-12 alkanes/olefins can be up to 100% over Al2O3 followed by ZSM-5 relay catalysis at the temperature of 550 degrees C, the catalyst to plastic ratio of 4:1, and Al2O3 to ZSM-5 ratio of 1:1. The product (monoaromatics and C-5-C-12 alkanes/olefins), naphtha, could be a renewable feedstock for new plastic production in the petroleum industry so that this finding might provide a new insight for a circular economy. (C) 2021 Elsevier B.V. All rights reserved.