Propane reacts with O2 and H2 on gold supported TS-1 to form oxygenates with high selectivity

Gas-phase propene epoxidation over coinage metal catalysts

“…Because Au catalysts can catalyze the direct synthesis of H 2 O 2 from O 2 and H 2 , it is possible that Ti-OOH species are the active intermediates in propene epoxidation with O 2 and H 2 over Au/Ti-containing supports. Recent theoretical calculations [81,82] and experiments by means of in-situ UV spectroscopy [54,60,101] and in-situ XANES spectroscopy [54] have confirmed that Ti-OOH species were indeed the active intermediates.…”

Au–metal oxide support interface as catalytic active sites

“…96 Oyama and coworkers proposed that the Ti-hydroperoxo species abstracts an H from propane while the propyl group binds to an oxygen to form an adsorbed isopropoxy (Scheme 2a). 6 Abstraction of a second H from the adsorbed isopropoxy by another Ti-hydroperoxy completes the formation of acetone.…”

“…Since the report by Haruta et al of exceptionally high activity of supported Au catalysts for low temperature CO oxidation, 1 researchers have been fascinated by the question of what constitutes the active site and the reason for the high activity. Subsequently, reports of these catalysts being active for other reactions emerged, especially if they are coupled with other catalysts, such as water-gas shift, 2 epoxidation of propylene with H 2 and O 2 , 3 epoxidation of propene and butene with O 2 and CO, 4,5 selective oxidation of propane 6 and other molecules. 7 Not surprisingly, the oxidation of CO is the most studied, and it is well established that the catalytic performance is very sensitive to the preparation method, pre-treatment, residual chloride content, and reaction condition.…”

Supported Gold Nanoparticles as Catalysts for the Oxidation of Alcohols and Alkanes

“…Au-Ba/TS-1 catalysts (0.11% Au, Ti:Si ratio = 3:100) were found to be very selective toward the formation of acetone (90%), isopropanol (5%), and CO 2 (5%) from propane , O 2 and H 2 , at 170°C, after 0.5 h (Bravo-Suarez et al, 2008). Biradar and Asefa showed that SBA-15 supported Au nanoparticles were able to oxidize n-hexane (Biradar and Asefa, 2012).…”