文献类型：期刊文献

英文题名：Highly selective upgrading alkane into light aromatics via a Low-Concentration O 2 coupling reaction strategy

作者：Hu, Wenheng[1];Chen, Huan[1];Wang, Junjie[1];Zhang, Zhe[1];Zhang, Zhengliang[1];Song, Dawei[1];Shi, Yaqin[1];Long, Donghui[1,2];Zhang, Yayun[1,2]

机构：[1]East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Sch Chem Engn, Key Lab Specially Funct Polymer Mat & Related Tech, Minist Educ, Shanghai 200237, Peoples R China

年份：2024

卷号：373

外文期刊名：FUEL

收录：;EI(收录号：20240160035);WOS:【SCI-EXPANDED(收录号:WOS:001264599500001)】；

基金：Acknowledgments This work was financially supported by National Natural Science Foundation of China (No. 22008073) , Shanghai Sailing Program (No. 20YF1410600) , Fundamental Research Funds for the Central

语种：英文

外文关键词：Alkane aromatization; Oxygen; Coupling reaction; HZSM-5

摘要：Transforming alkanes into value-added light aromatics represents an promising strategy for maximizing the utility of fossil feedstocks. However, achieving highly selective aromatization reactions remains a formidable challenge. This study advocates for an alkane-O 2 coupling reaction strategy, which involves introducing a lowconcentration O 2 atmosphere into the reaction system to facilitate the upgrading of alkanes to value-added aromatics over HZSM-5 zeolite catalyst. The investigation revealed that the abundant acidic sites on the zeolite facilitated alkane activation and subsequent C -C and C -H bond cleavage. Incorporating O 2 into the reaction generated oxygenated intermediates, significantly enhancing both the yield and selectivity of light aromatics compared to an inert atmosphere. Furthermore, the interaction of O 2 with coke bolstered the catalyst 's resistance to coking. Moreover, based on the in-situ FTIR results, a plausible alkane-O 2 coupling mechanism is proposed. These findings present a novel, effective, and environmentally benign approach for the highly selective aromatization of alkanes.