期刊
CATALYSIS SCIENCE & TECHNOLOGY
卷 5, 期 3, 页码 1870-1877出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4cy01399a
关键词
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资金
- Major State Basic Research Development Program [2012CB720302]
- 863 Program [2012AA062901]
- NSFC [21176174]
- Program for Changjiang Scholars and Innovative Research Team in University [IRT1161]
Bimetallic gold-barium catalysts were prepared and assessed for acetylene hydrochlorination, and characterized using low-temperature N-2 adsorption/desorption, thermogravimetric analysis, X-ray diffraction, temperature-programmed reduction/desorption, inductively coupled plasma-atomic emission spectroscopy, transmission electron microscopy, and X-ray photoelectron spectroscopy. The best catalytic performance is obtained over Au1Ba(II)1/AC catalysts with the acetylene conversion of 98.4% and the selectivity to VCM of 99.9%. It is indicated that the addition of Ba(II) can make Au species disperse well and inhibit carbon deposition on the catalyst surface; Ba(II) additives can enhance the adsorption of reactants on the catalysts but also inhibit the reduction of active gold species during the reaction, consequently augmenting the activity and long-term stability of gold catalysts.
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