【摘 要】
：
SBA-15 and HMS supported chromia catalysts were prepared and characterized. Chromia is highly dispersed on the mesoporous supports when its loading is ≤7 wt%.
【出 处】
：
Chinese Journal of Chemistry
论文部分内容阅读
SBA-15 and HMS supported chromia catalysts were prepared and characterized. Chromia is highly dispersed on the mesoporous supports when its loading is ≤7 wt%. The supported catalysts display high activity, selectivity and stability for dehydrogenation of ethylbenzene and propane. ESR measurement of the catalysts before and after reaction shows that the active species for dehydrogenation reaction might be Cr 3+ species on the catalyst surface, and the activity of the catalyst is probably correlated with the dispersion of Cr 3+ species.
The supported catalysts display high activity, selectivity and stability for dehydrogenation of ethylbenzene and propane. ESR measurement of the catalysts before and after reaction that the active species for dehydrogenation reaction might be Cr 3+ species on the catalyst surface, and the activity of the catalyst is probably correlated with the dispersion of Cr 3+ species.
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