Partial oxidation of propane to acrylic acid at a Mo?V?Te?Nb-oxide catalyst

Aerobic Oxidations of Light Alkanes over Solid Metal Oxide Catalysts

“…Schlogl and co-workers expand on this site isolation principle to further suggest that three distinct reaction sites should be responsible for different reaction pathways (though details of these sites are not discussed): one site responsible for dehydrogenation of propane to form propylene, a second site responsible for propylene oxidation to AA, and a third site responsible for steam reforming producing CO. 239 It is observed that the inclusion of steam in the reactor feed can improve both the reactivity of the M1 phase and its selectivity to AA by decreasing selectivity to CO x products (Figure 42). 7,237,240,245 d'Alnoncourt et al used in situ XPS techniques to monitor an M1 phase catalyst surface in the presence and the exclusion of steam in the reactant feed. 237 When steam is present, these authors show that the catalyst surface is altered, with an increase in the atomic concentrations of Te and V and a decrease in Mo concentration (Figure 43).…”

The partial oxidation of propane under mild aqueous conditions with H2O2 and ZSM-5 catalysts

“…The direct catalytic transformation of propane to oxygenated products is therefore a growing field of research. Indeed, the direct production of isopropanol [7,9], acetone [9,10], acrylic acid [11][12][13][14][15][16][17] and acrolein [18] has been reported. The most promising reactions appear to be propane ammoxidation to acrylonitrile [19] and direct propane oxidation to acrylic acid [20] which have both been trialled at pilot plant scale but are yet to replace existing production routes.…”