NDLI: Supported ionic-liquid-phase-stabilized Au(iii) catalyst for acetylene hydrochlorination

Content Provider	Royal Society of Chemistry (RSC)
Author	Pan, Zhiyan Xu, Xiaolong Yu, Yi NI, Jun Zhao, Jia Di, Xiaoxia Li, Xiaonian Gu, Shanchuan Zhang, Tongtong
Copyright Year	2016
Abstract	Using high-valent Au(III) catalysis is highly desirable in many reactions; however, it is plagued by the poor stability of Au(III) complexes. Still, conventional catalysts need high Au content makes the high price and demand for Au is one of the major obstacles limiting their large-scale application. Here we demonstrate that stable and catalytically active Au(III) complexes can be obtained using Supported Ionic Liquid Phase (SILP) technology. The resulting heterogeneous Au–IL/AC catalysts combine the advantages of the catalytic species being stabilised in the Au(III) form by forming a Au(III)–IL complex and the need for a less expensive metal catalyst because the active component can be better developed in a homogeneous reaction medium. When used in acetylene hydrochlorination reaction, this catalyst displayed an excellent specific activity and superior long-term stability. Under the same reaction conditions, the Au(III)–IL/AC catalyst shows higher activity and stability towards the vinyl chloride monomer (VCM) than IL-free Au/AC (C2H2 conversion = 72.1% at 180 °C compared to 16.1% without IL). It also delivered stable performance within the conversion of acetylene, reaching more than 99.4%, and there was only a 3.7% C2H2 conversion loss after running for 300 h under the reaction conditions of a temperature of 180 °C and a C2H2 hourly space velocity of 30 h−1. Its exceptional ability to maintain the high activity and stability further demonstrated the potential for the replacement of Hg-based catalysts for acetylene hydrochlorination.
Starting Page	3263
Ending Page	3270
Page Count	8
File Format	HTM / HTML PDF
ISSN	20444753
Volume Number	6
Issue Number	9
Journal	Catalysis Science & Technology
DOI	10.1039/c5cy02045j
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Ionic order Stellar kinematics Monomer Vinyl chloride Acetylene
Content Type	Text
Resource Type	Article
Subject	Catalysis

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