title: Effect of Au nano-particle aggregation on the deactivation of the AuCl3/AC catalyst for acetylene hydrochlorination.
abstract: A detailed study of the valence state and distribution of the AuCl3/AC catalyst during the acetylene hydrochlorination deactivation process is described and discussed. Temperature-programmed reduction and X-ray photoelectron spectral analysis indicate that the active Au(3+) reduction to metallic Au(0) is one reason for the deactivation of AuCl3/AC catalyst. Transmission electron microscopy characterization demonstrated that the particle size of Au nano-particles increases with increasing reaction time. The results indicated that metallic Au(0) exhibits considerable catalytic activity and that Au nano-particle aggregation may be another reason for the AuCl3/AC catalytic activity in acetylene hydrochlorination.
authors.affiliation: 1] School of Chemistry and Chemical Engineering of Shihezi University, Shihezi, Xinjiang 832000, P.R. China [2] Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Shihezi, Xinjiang 832000, P.R. China.
authors.forename: Bin
authors.initials: B
authors.lastname: Dai
authors.affiliation: School of Chemistry and Chemical Engineering of Shihezi University, Shihezi, Xinjiang 832000, P.R. China.
authors.forename: Qinqin
authors.initials: Q
authors.lastname: Wang
authors.affiliation: School of Chemistry and Chemical Engineering of Shihezi University, Shihezi, Xinjiang 832000, P.R. China.
authors.forename: Feng
authors.initials: F
authors.lastname: Yu
authors.affiliation: 1] School of Chemistry and Chemical Engineering of Shihezi University, Shihezi, Xinjiang 832000, P.R. China [2] Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Shihezi, Xinjiang 832000, P.R. China.
authors.forename: Mingyuan
authors.initials: M
authors.lastname: Zhu