AgMoVO₆: A Promising Catalyst for Selective Gas‐Phase Oxidation of o‐Xylene

Abstract

MoVing on up: AgMoVO6, a new crystalline catalyst for the gas‐phase oxidation of o‐xylene, with a remarkably high selectivity to value products, has been developed by high‐throughput experimentation. Doping of the catalyst with elements such as P results in further enhancement of the catalytic properties.

Monolayer V2O5/TiO2–ZrO2 catalysts for selective oxidation of o-xylene: preparation and characterization

“…The oxidation of o-xylene to phthalic anhydride with oxygen is a complex reaction that involves the participation of 12 electrons, the abstraction of six hydrogen atoms, and the incorporation of three oxygen atoms in the reactant molecule [31,32]. Intermediate oxygenated products, e.g., phthalide and o-tolualdehyde and deep oxidation products such as maleic anhydride, CO, and CO 2 are also formed during the course of the reaction (Scheme 1).…”

Polyol‐Mediated Synthesis and Properties of Nanoscale Molybdates/Tungstates: Color, Luminescence, Catalysis

“…Moreover, the yield of phytalic anhydride could be further increased by a more selective two-step oxidation if over-oxidation leading to CO 2 release is reduced. [ 22 ] Selective oxidation of o-xylene was here studied with asprepared Fe 2 (MoO 4 ) 3 , CoMoO 4 , NiMoO 4 , CuMoO 4 , In 2 (MoO 4 ) 3 , and CuWO 4 deposited on commercial porous silica substrates (i.e., modifi ed Degussa Aerosil 150) applying high-throughput techniques and online gas chromatography (GC). While the as-prepared, non-crystalline nanomaterials turned out as more or less inactive, all nanoscale molybdates/tungstates as supported on the silica matrix were crystallized by sintering for 0.5-1 h at 450-600 ° C ( Table 1 ).…”

Catalytic Properties of Silver Vanadium Phosphates in n‐Butane Oxidation – Considerations on the Impact of the [VxOy] Substructure

“…In recent investigations we have shown that structural incorporation of silver atoms can result in efficient catalysts for selective oxidation of o-xylene [15,16]. Silver molybdenum phosphates with defined crystal structures were tested for selective oxidation of propane [17] 4 ) 2 phases were also tested as catalysts in liquid phase oxidation of styrene to benzaldehyde [27].…”