Synthesis of Au/C Catalysts by Ultrasonic-Assisted Technique for Vinyl Chloride Monomer Production
Author(s) -
W. Wittanadecha,
Navadol Laosiripojana,
Anawat Ketcong,
Niwat Ningnuek,
Piyasan Praserthdam,
Suttichai Assabumrungrat
Publication year - 2014
Publication title -
engineering journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.246
H-Index - 20
ISSN - 0125-8281
DOI - 10.4186/ej.2014.18.3.65
Subject(s) - vinyl chloride , monomer , ultrasonic sensor , catalysis , materials science , chemical engineering , chemistry , organic chemistry , composite material , acoustics , polymer , physics , engineering , copolymer
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 180oC and 1.1, respectively.
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