초록

Platinum or platinum group metal decorated non-oxide materials that are formed using a synthesis pathway that avoids the production of intermediate oxides. The materials are suitable for use as catalysts and may or may not be porous.

대표청구항 ▼

1. A highly dispersed heterogenous material comprising an active support formed from a nanocrystalline ceramic material decorated with platinum (Pt) or a platinum group metal (PGM) in the form of molecules, clusters, nanoparticles or a combination thereof and further comprising an intermetallic phas

1. A highly dispersed heterogenous material comprising an active support formed from a nanocrystalline ceramic material decorated with platinum (Pt) or a platinum group metal (PGM) in the form of molecules, clusters, nanoparticles or a combination thereof and further comprising an intermetallic phase formed from the nanocrystalling ceramic material and the Pt or PGM. 2. The material of claim 1 wherein the nanocrystalline ceramic material comprises Molybdenum (Mo). 3. The material of claim 2 further comprising a ternary Pt—Mo—C phase. 4. The material of claim 2 wherein the intermetallic phase comprises PtMoz. 5. The material of claim 1 wherein the the platinum or platinum group metal is inactive for catalytic activity. 6. The material of claim 1 wherein the platinum or platinum group metal is catalytically active. 7. The material of claim 1 wherein the active support is porous. 8. The material of claim 7 wherein the active support comprises irregularly sized voids. 9. The material of claim 1, wherein the material is in the form of particles between 2 and 1000 nm in diameter. 10. The material of claim 9 wherein the material has a surface area of between 10 and 250 m2/g. 11. The material of claim 9 wherein the particles are between 15 and 30 nm in diameter. 12. The material of claim 11 wherein the material has a surface area of between ˜35 m2/g-˜45 m2/g. 13. The material of claim 1 with a platinum loading of at least 7 wt %. 14. The material of claim 13 with a platinum loading of between 7 and 8 wt %. 15. The material of claim 14 with an electrochemical surface area of approximately 36 m2/g. 16. The material of claim 14 with a platinum mass activity of 137 A/gpt. 17. The material of claim 13 with a platinum mass activity of 137 A/gpt.