Antimony vanadium phosphate
AssigneeE.I. du Pont de Nemours and Company
InventorPaul Douglas Vernooy
Life of this patent
Estimating the term…
Abstract
A new composition, SbVPO6+δ, in which 0≦δ≦ 1.5, has been prepared. Crystals of the compound have been grown by several methods, and the crystal structure has been determined. It is related in structure to vanadyl pyrophosphate (VPO), an important selective oxidation catalyst. The compound has shown utility as an oxidation catalyst.
Claims14
A composition of the formula SbVPO6+δwherein δ is 0 to about 1.5, wherein SbVPQ6 is characterized by the data in Tables I and II, as follows:
- TABLE I. Crystal Structure Parameters of SbVPO6
- Crystal System:
- Monoclinic
- Lattice Parameters:
- a=7.999(2) Å, b=5.727(1) Å, c=11.566(3) Å, β=93.97(1)°
- Volume:
- 528.57 Å3
- Formula:
- SbVPO6
- Units/Cell:
- 4
- Formula Weight:
- 299.6 amu
- Density:
- 3.76 g/cc
- Space Group:
- P21/n.
- TABLE II
- Fractional Coordinates (×10000) and Isotropic Thermal Parameters
- ATOM
- X
- Y
- Z
- BISO
- Sb(1)
- 7921.1(2)
- 1859.0(3)
- 9122.8(1)
- 0.7
- V(1)
- 6104.7(5)
- 6360.8(7)
- 10898.4(3)
- 0.7
- P(1)
- 9586.4(7)
- 3712.4(11)
- 11664.0(5)
- 0.8
- O(1)
- 7983(2)
- 5020(4)
- 11809(1)
- 1.6
- O(2)
- 10000(2)
- 2064(3)
- 12675(1)
- 1.2
- O(3)
- 6231(2)
- 3862(3)
- 9766(1)
- 1.1
- O(4)
- 9517(2)
- 2291(4)
- 10524(1)
- 1.4
- O(5)
- 11101(3)
- 5348(4)
- 11649(2)
- 2.1
- O(6)
- 6774(3)
- 8757(4)
- 10400(2)
- 1.8.
A process for preparing an oxidized antimony vanadium phosphate composition comprising heating a starting composition of the formula SbVPO6 in the presence of oxygen to produce a composition of the formula SbVPO6+δ wherein δ is 0 to about 1.5, wherein the starting composition of the formula SbVPO6 is characterized by the data in Tables I and II, as follows:
- TABLE I. Crystal Structure Parameters of SbVPO6
- Crystal System:
- Monoclinic
- Lattice Parameters:
- a=7.999(2) Å, b=5.727(1) Å, c=11.566(3) Å, β=93.97(1)°
- Volume:
- 528.57 Å3
- Formula:
- SbVPO6
- Units/Cell:
- 4
- Formula Weight:
- 299.6 amu
- Density:
- 3.76 g/cc
- Space Group:
- P21/n.
- TABLE II
- Fractional Coordinates (×10000) and Isotropic Thermal Parameters
- ATOM
- X
- Y
- Z
- BISO
- Sb(1)
- 7921.1(2)
- 1859.0(3)
- 9122.8(1)
- 0.7
- V(1)
- 6104.7(5)
- 6360.8(7)
- 10898.4(3)
- 0.7
- P(1)
- 9586.4(7)
- 3712.4(11)
- 11664.0(5)
- 0.8
- O(1)
- 7983(2)
- 5020(4)
- 11809(1)
- 1.6
- O(2)
- 10000(2)
- 2064(3)
- 12675(1)
- 1.2
- O(3)
- 6231(2)
- 3862(3)
- 9766(1)
- 1.1
- O(4)
- 9517(2)
- 2291(4)
- 10524(1)
- 1.4
- O(5)
- 11101(3)
- 5348(4)
- 11649(2)
- 2.1
- O(6)
- 6774(3)
- 8757(4)
- 10400(2)
- 1.8.
Dependencies are inferred from the claim text.