Journal of the Korean Chemical Society | |
Effect of Various Supports on the Catalytic Performance of V-Sb Oxides in the Oxidative Dehydrogenation of sobutane | |
V P Vislovskiy1  N T Shamilov1  | |
关键词: Vanadium-antimony oxide catalysts; Supports; Oxidative Dehydrogenation; Isobutane; Isobutene; | |
DOI : | |
学科分类:化学(综合) | |
来源: Korean Chemical Society | |
【 摘 要 】
V0.9Sb0.1Ox systems, bulk and deposited on different supports (five types of ¥ã-aluminas, ¥á-alumina, silica-alumina, silica gel, magnesium oxide), have been tested in the oxidative dehydrogenation (ODH) of iso-butane. Catalytic performance of VSb oxides has shown to be highly dependent on the support and the nature of the support decreasing in a series: ¥ã-Al2O3 > ¥á-Al2O3 > Si-Al-O > SiO2 ? MgO >> unsupported. Variation of the V-Sb-O-loading in the studied range of coverage (0.5-2 theoretical monolayer) only slightly influences the catalysts¡¯ activity and selectivity. The best catalytic performance of ¥ã-alumina-supported V0.9Sb0.1Ox systems can be explained by the optimal surface interaction between support and supported components resulting in the formation of well-spread amorphous active VOx-component with vanadium in a high oxidation state.
【 授权许可】
Unknown
【 预 览 】
Files | Size | Format | View |
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RO201912010187888ZK.pdf | 355KB | download |