Catalytic Performance and Deactivation of Cu/HY Catalysts for Acetylene Hydrochlorination

doi:10.11944/j.issn.1000-0518.2018.12.180055

Chinese Journal of Applied Chemistry ›› 2018, Vol. 35 ›› Issue (12): 1449-1456.DOI: 10.11944/j.issn.1000-0518.2018.12.180055

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Catalytic Performance and Deactivation of Cu/HY Catalysts for Acetylene Hydrochlorination

XIANG Bowen,WANG Lu(),WANG Feng,WANG Jide

Key Laboratory of Oil and Gas Fine Chemicals of Education and Xinjiang Uyghur Autonomous Region,College of Chemistry and Chemical Engineering,Xinjiang University,Urumqi 830046,China

Received:2018-02-27 Accepted:2018-06-06 Published:2018-12-05 Online:2018-12-10
Contact: WANG Lu
Supported by:
Supported by the National Natural Science Foundation of China(No.U1403293, No.21263025), the PhD Research Startup Foundation of Xinjiang University(No.BS160222)

Abstract

Abstract:

Zeolite supported Cu-based mercury-free catalysts(Cu/HY) were prepared by incipient-wetness impregnation, and their catalytic performance for acetylene hydrochlorination was evaluated in a fixed reactor. The structure parameters and theory properties of the fresh and used catalysts were characterized by scanning electron microscopy(SEM), energy dispersive spectroscopy(EDS), inductively coupled plasma-atomic emission spectroscopy(ICP-AES), N₂ adsorption and desorption isotherms(BET), thermogravimetry(TG), transmission electron microscopy(TEM), X-ray powder diffraction(XRD) and X-ray photoelectron spectroscopy(XPS). The acetylene conversion reached 84%, the selectivity for vinyl chloride was more than 95% and a better stability was observed on Cu/HY mercury-free catalysts with 15%(mass fraction) Cu loading, under the reaction conditions of 160 ℃, 101.325 kPa, a total gas hourly space of 120 h^-1, V(HCl)/V(C₂H₂)=1.25. Besides, the characterization results show that the generation of carbon deposition, the reduction, agglomeration and loss of Cu active components are the main reasons for the decrease of the catalyst activity.

Key words: catalysts, zeolite, acetylene hydrochlorination, catalysis, vinyl chloride

XIANG Bowen, WANG Lu, WANG Feng, WANG Jide. Catalytic Performance and Deactivation of Cu/HY Catalysts for Acetylene Hydrochlorination[J]. Chinese Journal of Applied Chemistry, 2018, 35(12): 1449-1456.

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Catalytic Performance and Deactivation of Cu/HY Catalysts for Acetylene Hydrochlorination

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