Synthesis of Au/C catalysts by ultrasonic-assisted technique for vinyl chloride monomer production

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Author list: Wittanadecha W., Laosiripojana N., Ketcong A., Ningnuek N., Praserthdam P., Assabumrungrat S.

Publisher: Faculty of Engineering

Publication year: 2014

Journal: Engineering Journal (0125-8281)

Volume number: 18

Issue number: 3

Start page: 65

End page: 72

Number of pages: 8

ISSN: 0125-8281

eISSN: 0125-8281

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84904306173&doi=10.4186%2fej.2014.18.3.65&partnerID=40&md5=88109c6169820b14ff63859220416e9c

Languages: English-Great Britain (EN-GB)

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Abstract

In the present work, the ultrasonic-assisted technique is applied to synthesize Au/C catalysts for vinyl chloride monomer (VCM) production via acetylene hydrochlorination. The catalytic performance of the obtained catalysts is compared with that of the catalyst prepared by a conventional incipient wetness impregnation technique. It was found that all the prepared catalysts show high VCM selectivity (>99.5%). The use of the ultrasonic-assisted technique can significantly improve the catalytic activity and stability of the synthesized Au/C catalysts. An ultrasonic driven time of 6 hours is found to be a promising catalyst for commercial application regarding the catalyst stability. In addition, the effect of operating parameters is investigated. Suitable operating temperature and HCl/C2H2 feed ratio are 180ฐC and 1.1, respectively.

Keywords

Gold catalyst, Ultrasonic-assisted technique, Vinyl chloride monomer