Palladium-halloysite nanocomposites as an efficient heterogeneous catalyst for acetylene hydrochlorination

Journal of Materials Research and Technology

Lizhen Lian¹  Lida Ma²  Haijun Yan³  Ronglan Wu⁴  Lu Wang⁴  Meng Zhang⁴  Zeqing Long⁴  Jide Wang⁴  Chao Yang⁴  Xinxin Cui⁴  Jianxin Si⁴  Ling Zhao⁴ 

[1] Corresponding author.;State Key Laboratory of Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China;Xinjiang De'an Environmental Protection Technology Co. Ltd, Urumqi 830026, China;Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education and Xinjiang Uyghur Autonomous Region, School of Chemical Engineering and Technology, Xinjiang University, Urumqi 830046, China;

关键词: Halloysite nanotubes;    Pd catalysis;    Urea;    Acetylene hydrochlorination;   

DOI  :  

来源: DOAJ

【 摘 要 】

Halloysite nanotubes (HNTs) were employed to design and synthesize palladium-based heterogeneous catalysts with the purpose of exploring an efficient non-mercuric catalyst for acetylene hydrochlorination. Various Pd/UHNTs catalysts with urea modification were prepared using ultrasonic-assisted impregnation method and the Pd/9UHNTs catalyst exhibited the best catalytic performance, with 90% acetylene conversion and above 94% vinyl chloride selectivity under the reaction conditions of T = 160 °C, a C2H2 gas hourly space velocity (GHSV) = 150 h−1 and V(HCl): V(C2H2) = 1.25. The results demonstrated that the urea additive (mainly nitrogen species) significantly immobilized Pd species and inhibited the carbon deposition on the catalyst surface, thus contributing to enhance the catalytic performance of Pd/HNTs catalysts during the reaction.

【 授权许可】

Unknown