[특허]Unsupported palladium alloy membranes and methods of making same

Unsupported palladium alloy membranes and methods of making same 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B01D-071/02 B01D-067/00 C01B-003/50 C23C-018/18 C23C-018/38 C23C-018/44 C23C-018/16
출원번호	US-0197218 (2008-08-22)
등록번호	US-9044715 (2015-06-02)
발명자 / 주소	Way, J. Douglas Thoen, Paul Gade, Sabina K.
출원인 / 주소	Colorado School of Mines
대리인 / 주소	Sheridan Ross P.C.
인용정보	피인용 횟수 : 0 인용 특허 : 59

초록 ▼

The invention provides support-free palladium membranes and methods of making these membranes. Single-gas testing of the unsupported foils produced hydrogen permeabilities equivalent to thicker membranes produced by cold-rolling. Defect-free films as thin as 7.2 microns can be fabricated, with ideal

대표청구항 ▼

1. A method of forming a free-standing hydrogen permeable palladium membrane comprising: electroless plating of a surface of a support to form a palladium membrane on the support;intentionally removing the palladium membrane from the support to produce the free-standing hydrogen permeable palladium membrane; andplating the free-standing hydrogen permeable palladium membrane with a second metal. 2. The method of claim 1, wherein the support is seeded with metallic palladium crystallites prior to the electroless plating. 3. The method of claim 2, wherein the seeding comprises contacting the support with a solution of palladium acetate in an organic solvent. 4. The method of claim 2, further comprising decomposing the palladium acetate prior to the electroless plating. 5. The method of claim 4, wherein the decomposing comprise immersing the seeded support in a 3 wt % solution of hydrogen peroxide. 6. The method of claim 5, wherein the immersing is conducted for about 30 minutes. 7. The method of claim 2, further comprising reducing the support. 8. The method of claim 7, wherein the reducing comprises contacting the support with hydrazine after the seeding. 9. The method of claim 8, wherein the contacting is conducted for about 20 minutes at about 50° C. 10. The method of claim 1, wherein the support is a stainless steel support. 11. The method of claim 10, wherein the support is a mirror-finished stainless steel support. 12. The method of claim 1, wherein the electroless plating comprises immersing the support in a palladium plating bath. 13. The method of claim 12, wherein the palladium plating bath contains no ethylenediaminetetraacetic (EDTA). 14. The method of claim 1, wherein the electroless plating comprises immersing the support in a palladium plating bath at about 50° C.; and, adding hydrazine to the plating bath. 15. The method of claim 14, wherein the hydrazine is a 3M solution of hydrazine added to the plating solution in a 100:1 ratio of plating bath to hydrazine. 16. The method of claim 1, wherein the removing comprises scoring the edge of the palladium film and lifting the film away from the support. 17. The method of claim 1, further comprising electroless plating of a second metal onto the palladium membrane to form a layered metal membrane before the removing. 18. The method of claim 17, wherein the second metal is selected from the group consisting of copper, silver and gold. 19. The method of claim 17, further comprising annealing the layered metal membrane prior to the removing. 20. The method of claim 1, wherein the second metal is selected from the group consisting of copper, silver and gold.

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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Unsupported palladium alloy membranes and methods of making same 원문보기

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Unsupported palladium alloy membranes and methods of making same 원문보기

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