A Mixed Valent Vanadium Phosphate Closely Related to BaV2P2O10: AgV2P2O10

Resource‐Efficient Alkane Selective Oxidation on New Crystalline Solids: Searching for Novel Catalyst Materials

“…This mixed vanadyl(IV, V) orthophosphate was studied since it shows all the structural features that are deemed necessary for a promising selective oxidation catalyst (mixed valent vanadium(IV, V), vanadyl groups, linkage of [VO 6 ] octahedra, cf. [36]; Fig. 2c).…”

“…In addition Ag(V IV O)(V V O)(PO 4 ) 2 (Cat-2) [36] was tested. It was synthesized from literature by reacting AgNO 3 , V 2 O 5 , and (NH 4 ) 2 HPO 4 in the molar ratio 1:0.9:2 for 24 h at 380°C in air.…”

“…2a, [34]). In addition, the hitherto unknown catalytic behavior of Ag(V IV O)(V V O)(PO 4 ) 2 [36] has been characterized. This mixed vanadyl(IV, V) orthophosphate was studied since it shows all the structural features that are deemed necessary for a promising selective oxidation catalyst (mixed valent vanadium(IV, V), vanadyl groups, linkage of [VO 6 ] octahedra, cf.…”

Hydrothermal Synthesis and Characterization of a Novel Mixed-Valence Oxide, HxV2Zr2O9·H2O,x=0.43

“…In most vanadium phosphates, the phosphorus atom appears in a PO tetrahedron, while vanadium-oxygen polyhedral building blocks have the ability to adapt various coordination geometries such as significantly distorted octahedra, square pyramids, trigonal bipyramids, and tetrahedra (6). In the vanadium phosphate system, a series of new compounds have been synthesized by both solid state reactions and hydrothermal methods (7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17). Hydrothermal synthesis has been an open route to microporous crystals and metastable phases, and recently this method has been extended to the preparation of novel and nanocrystalline complex oxides and complex fluorides (18)(19)(20).…”

Kurze O-O-Abstände einer gemeinsamen Polyederkante bei Verknüpfung von PO4-Tetraedern mit VO6-Oktaedern im Vanadyl-Orthophosphat CaNi(VO)(PO4)2 / Short O-O Distances in Edge Sharing PO4 Tetrahedra and VO6 Octahedra of the Vanadyl- Orthophosphate CaNi(VO)(PO4)2

“…Be kannt sind Verbindungen der Zusammensetzungen M (V 0 ),(P 0 4 )2 mit M = Ca [11, Ba [2], Cd (ct-Form) [3], CdCtf-Form) [4], und M 2( V 0 )(P 0 4 )2 mit M = Zn [5], Sr [6 ], Ba [7] und A g [8 ]. Es sei erwähnt, daß trotz der Fülle bekannter Oxovanadate bis vor kurzem kein Erdalkalimetall-Vanadylphosphat bekannt war, w elches ein drittes Kation ent hielt.…”