Vanadium Oxo Organometallic Species Supported on Silica for the Selective Non-oxidative Dehydrogenation of Propane

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• 作者：Kai C. Szeto ; Bj枚rn Loges ; Nicolas Merle ; Nicolas Popoff ; Alessandra Quadrelli ; Hongpeng Jia ; Elise Berrier ; Aimery De Mallmann ; Laurent Delevoye ; R茅gis M. Gauvin ; Mostafa Taoufik
• 刊名：Organometallics
• 出版年：2013
• 出版时间：November 11, 2013
• 年：2013
• 卷：32
• 期：21
• 页码：6452-6460
• 全文大小：465K
• 年卷期：v.32,no.21(November 11, 2013)
• ISSN：1520-6041

文摘

The molecular complex [V(鈺怬)(Mes)₃] (1) reacts with silica partially dehydroxylated at 700 掳C (SiO_2-700) to afford [(鈮iO)V(鈺怬)(Mes)₂] (2) as the major surface species, while a bis-grafted surface species [(鈮iO)₂V(鈺怬)(Mes)] (3) is obtained on SiO_2-200. These surface species were characterized by DRIFT, Raman, ¹H, ¹³C, and ⁵¹V solid-state NMR, and XAFS spectroscopy and show an activity in the non-oxidative dehydrogenation of propane at 500 掳C. The bipodal surface organometallic complex displays a higher selectivity in propylene in comparison to the monopodal species.