초록 ▼

Provided is a hydrogen separation membrane prepared by compression-molding metal microparticles having hydrogen adsorbing properties, wherein the microparticles are composed of 0.5 to 50% by weight of a first metal powder and 50 to 99.5% by weight of a second metal powder having a relatively larger

Provided is a hydrogen separation membrane prepared by compression-molding metal microparticles having hydrogen adsorbing properties, wherein the microparticles are composed of 0.5 to 50% by weight of a first metal powder and 50 to 99.5% by weight of a second metal powder having a relatively larger average particle diameter than the first metal powder.

대표청구항 ▼

What is claimed is: 1. A hydrogen separation membrane prepared by press-molding microparticles having hydrogen adsorbing properties, wherein the microparticles are composed of 0.5 to 50% by weight of a first metal powder and 50 to 99.5% by weight of a second metal powder having a relatively larger

What is claimed is: 1. A hydrogen separation membrane prepared by press-molding microparticles having hydrogen adsorbing properties, wherein the microparticles are composed of 0.5 to 50% by weight of a first metal powder and 50 to 99.5% by weight of a second metal powder having a relatively larger average particle diameter than the first metal powder, wherein the first metal powder is surface-coated with at Least one metal selected from the group consisting of Al, Si, Pt, Pd, Ru, Rh, Au and Ag. 2. The membrane according to claim 1, wherein the first metal powder is selected from microparticles having an average particle diameter of 0.01 to 0.5 μm. 3. The membrane according to claim 1, wherein the second metal powder is selected from microparticles having an average particle diameter of 0.8 to 10 μm. 4. The membrane according to claim 1, wherein the second metal powder is reduced by pretreatment under hydrogen atmosphere at 200 to 500° C. 5. The membrane according to claim 1, wherein the first metal powder and/or second metal powder are nickel powder. 6. A method for preparing a hydrogen separation membrane containing microparticles having hydrogen adsorption properties, comprising: mixing 0.5 to 50% by weight of a first metal powder and 50 to 99.5% by weight of a second metal powder having a relatively larger average particle diameter than the first metal powder; press-molding the mixed powder under predetermined pressure; and calcining the resulting molded material under hydrogen atmosphere. 7. The method according to claim 6, wherein press-molding is carried out under pressure of 1 to 20 tons/cm2. 8. The method according to claim 6, wherein the first metal powder is surface-coated with at least one metal selected from the group consisting of Al, Si, Pt, Pd, Ru, Rh, Au and Ag. 9. The method according to claim 6, wherein the mixing of a first metal powder and a second metal powder includes a mixing step of Al and/or Si oxide powder as a sintering inhibitor. 10. The method according to claim 6, wherein the second metal powder is reduced by pretreatment under hydrogen atmosphere at 200 to 500° C. 11. The method according to claim 6, wherein the first metal powder and/or second metal powder are nickel powder. 12. A hydrogen separation membrane prepared by press-molding microparticles having hydrogen adsorbing properties, wherein the microparticles are composed of 0.5 to 50% by weight of a first metal powder and 50 to 99.5% by weight of a second metal powder having a relatively larger average particle diameter than the first metal powder, wherein the second metal powder is reduced by pretreatment under hydrogen atmosphere at 200 to 500° C. 13. The membrane according to claim 12, wherein the first metal powder is selected from microparticles having an average particle diameter of 0.01 to 0.5 μm. 14. The membrane according to claim 12, wherein the second metal powder is selected from microparticles having an average particle diameter of 0.8 to 10 μm. 15. The membrane according to claim 12, wherein the first metal powder is surface-coated with at least one metal selected from the group consisting of Al, Si, Pt, Pd, Ru, Rh, Au and Ag. 16. The membrane according to claim 12, wherein the first metal powder and/or second metal powder are nickel powder.