Preparation and Optimization of SnCl2-ZnCl2/C Mercury-free Catalyst for Acetylene Hydrochlorination

doi:10.3724/SP.J.1095.2014.30337

Chinese Journal of Applied Chemistry

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Preparation and Optimization of SnCl₂-ZnCl₂/C Mercury-free Catalyst for Acetylene Hydrochlorination

GUO Yanyan, LIU Ying^*, HU Ruisheng, GAO Guanjun, SUN Hongjuan

(College of Chemistry and Chemical Engineering，Inner Mongolia University,Hohhot 010021,China)

Received:2013-07-08 Revised:2013-09-23 Published:2014-05-10 Online:2014-05-10

Abstract

Abstract: Mercury-free catalyst SnCl2-ZnCl2/C for acetylene hydrochlorination was prepared by ultrasound method. Rare earth compounds were added to stabilize the performance of the catalyst. The optimal mass ratio of the active component SnCl2 and ZnCl2 is 2∶1, which was determined by golden section and parabolic method. At 140 ℃, acetylene space velocity 300 h-1, V(HCl)/V(C2H2)=1.10, in the presence of a catalyst composed by 0.67 g SnCl2, 0.33 g ZnCl2, 0.05 g Tb4O7, and 4 g calcined activated carbon(AC) supporter, the highest 67.70% acetylene average conversion rate was achieved. The preparation method of the supporter was found to be the most important effect factor of the catalyst performance.

Key words: acetylene hydrochlorination, mercury-free catalyst, orthogonal experiment, ultrasound

CLC Number:

O643

GUO Yanyan, LIU Ying*, HU Ruisheng, GAO Guanjun, SUN Hongjuan. Preparation and Optimization of SnCl₂-ZnCl₂/C Mercury-free Catalyst for Acetylene Hydrochlorination[J]. Chinese Journal of Applied Chemistry, DOI: 10.3724/SP.J.1095.2014.30337.

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Preparation and Optimization of SnCl₂-ZnCl₂/C Mercury-free Catalyst for Acetylene Hydrochlorination

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