Novel AuCl3- thiourea catalyst with a low Au content and an excellent catalytic performance for acetylene hydrochlorination

作者：Yin, Xue; Huang, Chaofeng; Kang, Lihua; Zhu, Mingyuan^*; Dai, Bin

来源：Catalysis Science & Technology, 2016, 6(12): 4254-4259.

DOI：10.1039/c5cy01943e

• VAPOR-PHASE HYDROCHLORINATION
• SUPPORTED GOLD CATALYST
• METAL

In this work, we synthesized a novel non-mercuric catalyst with HAuCl4 center dot 4H(2)O and thiourea as precursors, and active carbon (AC) as a support. The synthesized catalyst was applied to acetylene hydrochlorination, and the AuCl3-thiourea/AC catalyst containing 0.4 wt% Au exhibited a similar catalytic performance to the AuCl3/AC catalyst containing 1 wt% Au. Based on the characterization results of temperature program reduction and X-ray photoelectron spectroscopy, we proposed that the presence of thiourea in the AuCl3-thiourea/AC catalyst can enhance the content of active Au(3-delta)+ (delta = 0, 2) by virtue of the interaction between metallic Au degrees and thiourea. Strengthening the adsorption of hydrogen chloride can restrain the reduction of Au(3- delta)+ (delta = 0, 2) to Au-0.

• 出版日期2016
• 单位石河子大学