Active carbon supported TiO2-AuCl3/AC catalyst with excellent stability for acetylene hydrochlorination reaction

作者：Huang, Chaofeng; Zhu, Mingyuan^*; Kang, Lihua; Li, Xiaoyan; Dai, Bin

来源：Chemical Engineering Journal, 2014, 242: 69-75.

DOI：10.1016/j.cej.2013.12.083

• Acetylene hydrochlorination reaction
• AuCl3 catalyst
• TiO2
• Stability

In this paper, TiO2 is added to synthesize TiO2-AuCl3/AC (activated carbon) catalyst with active carbon as support, and catalytic performance of the obtained TiO2-AuCl3/AC catalyst is applied in acetylene hydrochlorination reaction. The addition of TiO2 species significantly enhances the stability of AuCl3/AC catalyst. Transmission electron microscope characterization displays the presence of anatase TiO2 phase in TiO2-AuCl3/AC catalyst. X-ray diffraction and temperature programmed reduction analysis demonstrate that the addition of TiO2 species partly inhibits the reduction of Au3+ to Au-0 in acetylene hydrochlorination process. TiO2 species in TiO2-AuCl3/AC catalyst strengthens the adsorption of hydrogen chloride reactant in acetylene hydrochlorination reaction, which is attributed to the strong interaction between Au3+ active site and TiO2 species.

• 出版日期2014-4-15
• 单位石河子大学