Novell Ternary and Polynary Vanadium(IV) Phosphates as Catalysts for Selective Oxidations of Light Hydrocarbons

Solid Solution Formation between Vanadium(V) and ­Tungs­ten(V) Oxide Phosphate

“…Further studies on the application of catalytic promoters did not lead to an improved catalyst performance 9,10. Similarly, the catalytic activity and selectivity of various, more recently characterized polynary vanadium(IV) phosphates containing different transition metals do not reach the conventional vanadyl pyrophosphate catalyst 11. However, a mixed valence silver vanadium(IV/V) oxide phosphate with the empirical composition Ag 2 V IV, V P 1.6 O 7+ δ (0 ≤ δ ≤ 0.5) showed promising catalytic performance in the gas phase oxidation of n ‐butane to maleic anhydride 12…”

Electrochemistry of Cu0.5VOPO4·2H2O: A Promising Mixed Metal Phosphorous Oxide for Secondary Lithium based Batteries

“…The presence of the water molecules plays an important role in this layered structure as a non-hydrated CuVPO material with an analogous composition (CuV 2 O 2 (PO 4 ) 2 ) does not possess a layered structure. 30 Comparison with the structure of silver vanadium phosphorous oxide, Ag 0.43 VOPO 4 · 2H 2 O, shows several similarities. The silver containing material also has a layered structure, with silver ions, Ag + , and water, H 2 O, located between the V-O-P-O layers where four of the oxygen atoms bonded to the silver are from the water molecules that are held between the vanadium phosphorous oxygen layers.…”

Synthesis and Characterization of Niobium and Tungsten Substituted VOPO4

“…However, studies on incorporation of catalytic promoters did not lead to an improved catalyst activity and selectivity (Agaskar et al 1997, Davis et al 2002, Guliants et al 1999, Rownaghi et al 2009. Recently it was reported that the catalytic activity and selectivity of various, polynaryvanadium (IV) phosphates (Glaum et al 2007 andBenser et al 2007). P. K. Grasselli (2002) (Raminosona et al 1987).…”