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

Year: 2013

Type: article

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

Source: Organometallics

DOI: 10.1021/om400795s