초록

A getter composition suitable for gettering hydrogen comprises a first metal oxide and a second metal oxide, said first metal oxide being more readily reducible in hydrogen at temperatures between 0° C. and 100° C. than said second metal oxide.

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1. A hydrogen getter composition, comprising a mixture of the following particulate components: i) a hydrogen-getter, comprising: a) a first metal oxide, comprising an oxide of a metal selected from the group consisting of platinum, palladium, rhodium, and ruthenium;b) 95 to 99.9 wt % of a second me

1. A hydrogen getter composition, comprising a mixture of the following particulate components: i) a hydrogen-getter, comprising: a) a first metal oxide, comprising an oxide of a metal selected from the group consisting of platinum, palladium, rhodium, and ruthenium;b) 95 to 99.9 wt % of a second metal oxide, relative to the total metal oxide components of the composition, comprising an oxide of a metal selected from the group consisting of copper, iron, nickel, cobalt, and cerium; andii) 5-75 wt. % of a moisture absorbing material, relative to the total weight of the composition; wherein 0.01% to 5 wt. % of the first metal oxide is present, calculated as the metal and based upon the total weight of the first and second metal oxides. 2. The composition of claim 1, wherein the first metal oxide is precipitated onto the second metal oxide. 3. The composition of claim 1, wherein the first metal oxide is coprecipitated with the second metal oxide. 4. The composition of claim 1, wherein the first metal oxide is impregnated onto the second metal oxide. 5. The composition of claim 1, wherein the first metal oxide is supported on the second metal oxide. 6. The composition of claim 1, wherein the moisture absorbing material comprises a zeolite. 7. The composition of claim 6, wherein the zeolite is selected from the group consisting of FAU zeolites and LTA zeolites. 8. The composition of claim 1, wherein the composition is in the form of a shaped pellet or tablet. 9. The composition of claim 8, wherein the pellet or tablet has a minimum dimension of 1.5 mm or less. 10. The composition of claim 1, wherein the composition is in a mouldable or printable form. 11. The composition of claim 10, further comprising an organic binder and a solvent for the binder, said binder being permeable to hydrogen. 12. The composition of claim 11, wherein the binder comprises a cellulose derivative. 13. The composition of claim 11, wherein the binder comprises a polymeric binder. 14. The composition of claim 1, from which a support comprising a third metal oxide or carbon is absent. 15. The composition of claim 1, consisting essentially of: i) the first metal oxide;ii) the second metal oxide;iii) the moisture absorbing material;iv) 0-25 wt. % of a binder, relative to the total weight of the composition; andv) optionally, materials selected from a colorant and a lubricant;wherein the first metal oxide is more readily reducible in hydrogen at temperatures between 0° C. and 100° C. than the second metal oxide. 16. An electronic device incorporating the composition of claim 15. 17. An electronic device incorporating the composition of claim 1. 18. A hydrogen getter composition, comprising: i) a first metal oxide, comprising an oxide of a metal selected from the group consisting of platinum, palladium, rhodium, and ruthenium;ii) 95 to 99.9 wt. % of a second metal oxide, relative to the total metal oxide components of the composition, comprising an oxide of a metal selected from the group consisting of copper, iron, nickel, cobalt, and cerium; andiii) a moisture absorbing material; wherein: a) the first metal oxide is supported on the second metal oxide; andb) 0.01% to 5 wt. % of the first metal oxide is present, calculated as the metal and based upon the total weight of the first and second metal oxides. 19. The composition of claim 18, wherein the first metal oxide is precipitated onto the second metal oxide. 20. The composition of claim 18, wherein the first metal oxide is impregnated onto the second metal oxide. 21. The composition of claim 18, wherein the moisture absorbing material is present in an amount of 5-75 wt. %, relative to the total weight of the composition. 22. The composition of claim 21, wherein the moisture absorbing material comprises a zeolite. 23. The composition of claim 22, wherein the zeolite is selected from the group consisting of FAU zeolites and LTA zeolites. 24. The composition of claim 18, wherein the composition is in the form of a shaped pellet or tablet. 25. The composition of claim 24, wherein the pellet or tablet has a minimum dimension of 1.5 mm or less. 26. The composition of claim 18, wherein the composition is in a mouldable or printable form. 27. The composition of claim 26, further comprising an organic binder and a solvent for the binder, said binder being permeable to hydrogen. 28. The composition of claim 27, wherein the binder comprises a cellulose derivative. 29. The composition of claim 28, wherein the binder comprises a polymeric binder. 30. The composition of claim 18, from which a support comprising a third metal oxide or carbon is absent. 31. The composition of claim 18, consisting essentially of: i) the first metal oxide;ii) the second metal oxide;iii) the moisture absorbing material;iv) 0-25 wt. % of a binder, relative to the total weight of the composition; andv) optionally, materials selected from a colorant and a lubricant;wherein the first metal oxide is more readily reducible in hydrogen at temperatures between 0° C. and 100° C. than the second metal oxide. 32. An electronic device incorporating the composition of claim 31. 33. An electronic device incorporating the composition of claim 18.