Tetravalent metal acid triphosphates

Details Tetravalent metal acid triphosphates Tetravalent metal acid triphosphates

2008-06-10

2008-06-10

Langel, Wayne A. (Department: 1793)

Electricity: electrical systems and devices

Electrolytic systems or devices

Solid electrolytic capacitor

C096S004000, C096S011000, C096S012000, C423S308000, C423S309000, C429S010000, C502S208000

Reexamination Certificate

active

07385803

ABSTRACT:
This invention is based on the preparation of new solid acid triphosphates with compositions of the general formula M(IV)(HPO4)(H2PO4)2, where M(IV) is a tetravalent metal or a mixture of tetravalent metals. These compounds are insoluble in water the greater part of most organic solvents. They show a high non-water assisted protonic conductivity (about 0.01-0.04 S/cm at 100° C. and a relative humidity lower than 1%). These compounds can be used as proton conduction separators in electrochemical devices, to operate at low relative humidity values, as for example in different fuel cells, protonic pumps for electrochemical hydrogenation and dehydrogenation of organic compounds, or for hydrogen production from hydrogenated organic compounds by electro-reforming, or also for removing hydrogen from equilibrium reactions. These compounds can also be used in electrochemical sensors, in super capacitors and as acid catalysts in non-aqueous or anhydrous gaseous phases.

REFERENCES:
patent: 3416884 (1968-12-01), Stynes et al.
patent: 4609484 (1986-09-01), Alberti et al.
patent: 4629656 (1986-12-01), Alberti et al.
patent: 4826663 (1989-05-01), Alberti et al.
patent: 5085845 (1992-02-01), Ueda et al.
patent: 5892080 (1999-04-01), Alberti et al.
patent: 2003/0103888 (2003-06-01), Hai et al.
Baranov, A.I., et al., “Superion conductivity and phase transitions in CsHSO4and CsHSeO4crystals”,JEPT Lett., vol. 36, pp. 459-462, (1982), no month.
Lassègues, J.C., et al., “Proton conducting polymer blends and hybrid organic inorganic materials”,Solid State Ionics, vol. 145, pp. 37-45, (2001), no month.
Brodalla, D., et al., “A New Form of A1(H3PO4)3with Three-Dimensional Al-O-P Crosslinking”,Z. Naturforsch., vol. 36b, pp. 907-909, (1981), no month.
Henn, F.E.G., et al., “Frequency Dependent Protonic Conduction in N2H5Sn3F7Glass and RbHSeO4Single Crystal”,Solid State Ionics, vol. 42, pp. 29-36, (1990), no month.
Schuster, M., et al., “Proton mobility in oligomer-bound proton solvents: imidazole immobilization via flexible spacers”,Solid State Ionics, vol. 145, pp. 85-92, (2001), no month.
Jones, D.J., et al., “Recent advances in the functionalism of polybenzimidazole and polyetherketone for fuel cell applications”,Journal of Membrane Science, vol. 185, pp. 41-58, (2001), no month.
Sholin, Y.I., et al., “Russian Title”,Kristallografiya KRSA, vol. 27, pp. 239-241, (1981), no month.
Alberti G.,et al., “Layered and pillared metal phosphates and phosphonates”,Advanced Materials, vol. 8, No. 4, pp. 291-303, (Apr. 1, 1966) XP000587105.
Clearfield A., et al., “The preparation of crystalline zirconium phosphate and some observations on its ion exchange behaviour”,Journal of Inorganic&Nuclear Chemistry, vol. 26, pp. 117-129, (1964) XP0009005533, no month.
Alberti G., et al., “Solid state protonic conductors, present main applications and future prospects”,Solid State Ionics, vol. 145, No. 1-4, pp. 3-16 (Dec. 1, 2001) XP004310745.
Nagai Masayuki, et al., “Conductivity Dominating Factors In Three-Dimensional Zirconium Phosphate Ion Conductors”Solid State Ionicsvol. ¾, pp. 227-231, (Aug. 1980) XP002285249.
Liu Y, et al., “Hydrothermal Synthesis and Characterization of Two New Three-Dimensional Titanium Phosphates” ,Chemistry of Materials, vol. 13, No. 6, pp. 2017-2022 (Jun. 2001) XP001086775.

Affiliated with

Also associated with

Rating

Tetravalent metal acid triphosphates does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Tetravalent metal acid triphosphates, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tetravalent metal acid triphosphates will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2806950