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Effect of glow discharge plasma on rhodium-based catalyst for oxygenates synthesis |
| HUANG Lihong1, CHU Wei2, XU Junqiang2, HONG Jingping2, YI Min2 |
| 1.Department of Chemical Engineering, Sichuan University, Chengdu 610065, China; College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu 610059, China; 2.College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu 610059, China; |
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Abstract Rhodium-based catalysts were prepared by impregnation, treated with glow discharge plasma, characterized by X-ray diffraction, X-ray photoelectron spectroscopy, H2 temperature-programmed reduction, H2 temperature-programmed desorption and CO temperature-programmed desorption, and investigated for oxygenate synthesis from CO hydrogenation. Based on the characterization results, plasma treatment endowed the samples with smaller particle size, higher dispersion of active components, and an enrichment of active components on the surface as well. As a result, the reducibility and adsorption properties were modified. In catalytic tests, the catalytic activity for CO hydrogenation over the samples treated by plasma was improved remarkably: the conversion of CO and the yield of oxygenates increased at most by a factor of 78.62% and 51.96%, respectively, while the selectivity of ethanol and methanol in the oxygenates was enhanced as well.
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Issue Date: 05 March 2007
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