文献类型：期刊文献

英文题名：Catalytic pyrolysis of toluene as biomass tar model component using Ni/HZSM-5 modified by CeO2 and MgO promoters

作者：Li, Xueqin[1,2];Liu, Peng[2];Chen, Wenxuan[2];Wu, Youqing[1];Lei, Tingzhou[2];Huang, Sheng[1];Li, Yanling[2];Wu, Shiyong[1,3];Wang, Zhiwei[4]

机构：[1]East China Univ Sci & Technol, Sch Resources & Environm Engn, Dept Chem Engn Energy Resources, Shanghai 200237, Peoples R China;[2]Changzhou Univ, Natl Local Joint Engn Res Ctr Biomass Refining &, Inst Urban & Rural Min, Changzhou 213164, Jiangsu, Peoples R China;[3]Ningxia Univ, Coll Chem & Chem Engn, State Key Lab High Efficiency Utilizat Coal & Gre, Yinchuan 750021, Ningxia, Peoples R China;[4]Henan Univ Technol, Sch Environm Engn, Zhengzhou 450001, Peoples R China

年份：2022

卷号：162

外文期刊名：JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS

收录：;EI(收录号：20220311476089);WOS:【SSCI(收录号:WOS:000787266400002)，SCI-EXPANDED(收录号:WOS:000787266400002)】；

基金：This work was supported by the National Key R&D Program of China (No. 2018YFC1901203) , National Natural Science Foundation of China (Nos. 51906021 and 21878096) , Special Scientific Research Project for Civil Aircraft in 2020-EU China Sustainable Aviation Fuel (No. MJ-2020-D-09) , and Key R&D Projects in Ningxia Hui Autonomous Region (No. 2021BEG02001) .

语种：英文

外文关键词：Toluene; Catalytic pyrolysis; Ni-based catalysts; CeO2 and MgO promoters

摘要：Thermochemical conversion technology is a promising chemical method for removal of biomass tar. In this study, Ni/HZSM-5 catalyst modified by CeO2 and MgO promoters were prepared by ultrasonic-assisted excessive impregnation method. Toluene was selected as the representative model component of biomass tar, and the pyrolysis experiments were carried out in a tubular fixed bed reactor. Fresh and reacted catalysts have been characterized. The results revealed a similar initial activity for different loadings of same promoter. The stability of Ni-Ce catalysts increased gradually with increasing of Ce loading. In particular, Ni-4%Ce/HZSM-5 catalyst has the best catalytic activity with the toluene conversion of 94.5%, the yield of total gas of 107 mL/g, the gaseous efficiency of 68 wt.%. The BET surface areas as large as 206.9 m(2)/g with an average pore size of 3.2 nm assisted NiO particles dispersed on the surface of HZSM-5 support. Although the performance of Ni-4%Ce/HZSM-5 catalyst was better, the surface of its also formed char with an elongated fiber. However, the low-catalytic performance of Ni-Mg/HZSM-5 was due to the instability of active center NiO-MgO solid solution. This study revealed the influences of promoter types, promoter loadings, and the potential mechanism of similar catalytic performance on the preparation process of Ni-based catalysts.