文献类型：期刊文献

英文题名：Selective generation of aromatic hydrocarbons from hydrotreating-cracking of bio-oil light fraction with MOx modified HZSM-5 (M = Ga, Mo and Zn)

作者：Cai, Qinjie[1];Yu, Taili[1];Meng, Xin[1];Zhang, Suping[1]

机构：[1]East China Univ Sci & Technol, Sch Resources & Environm Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2020

卷号：204

外文期刊名：FUEL PROCESSING TECHNOLOGY

收录：;EI(收录号：20201408377724);WOS:【SCI-EXPANDED(收录号:WOS:000528034800006)】；

基金：This work was supported by the National Natural Science Foundation of China (Grant No. 51606069), the National Key Research & Development Program of China (Grant No. 2018YFB1501601), Fundamental Research Funds for the Central Universities (Grant No. 222201814054) and China Postdoctoral Science Foundation (Grant No. 2016M591616).

语种：英文

外文关键词：Bio-oil; Aromatic hydrocarbon; MOx/HZSM-5; Hydrotreating-cracking; Upgrading

摘要：The upgrading of highly unsaturated bio-oil by zeolite cracking suffers from severe catalyst deactivation due to the carbonaceous deposition. Therefore, the dual-stage hydrotreating-cracking process is developed for more stable operation. In this work, to further promote the generation of aromatic hydrocarbon in a hydrotreatingcracking process cofeeding bio-oil light fraction and methanol, the cracking catalyst HZSM-5 was modified by MOx (M = Ga, Mo and Zn). Compared with the blank HZSM-5, the promotion of aromatic hydrocarbon production by MoO3/HZSM-5 was mainly owing to the enhanced selective conversion of intermediate light alkenes to aromatics, while those by Ga2O3/HZSM-5 and ZnO/HZSM-5 were attributed to both the re-activation of hydrotreating-derived CH4 and the intensified selective aromatization of alkenes. Meanwhile, raising cracking temperature decreased the yield of aromatic hydrocarbon but favored the production of gases. Ga2O3/HZSM-5 was the most effective catalyst for aromatic hydrocarbon production and 400 degrees C was a suitable cracking temperature, under which the upgrading of a bio-oil aqueous fraction achieved the oil phase yield of above 22% with the aromatic hydrocarbon content of above 93%.