Hydrogen separation membrane, and method for manufacturing same

A method for manufacturing a hydrogen separation membrane, comprising:

• preparing a porous support made of a metal or ceramic material;
• forming a buffer layer in the form of a plurality of columns on the porous support, wherein the buffer layer is made of a ceramic material, and formed of a plurality of layers;
• and
• forming a palladium-based metal separation membrane, which is able to separate hydrogen, on the buffer layer,
• wherein the buffer layer has neighboring layers formed of different ceramic materials,
• the forming of the buffer layer comprises:
• forming a first buffer layer on the porous support wherein the first buffer layer is formed of one oxide-based ceramic material selected from the group consisting of TiOy, ZrOy, and Al2Oz where the composition of oxygen is 1<y<2, or 2<z<3;
• forming a second buffer layer on the first buffer layer wherein the second buffer layer is formed of an oxide-based ceramic material comprising one selected from the group consisting of Ti, Zr, Al, Si, Ce, La, Sr, Cr, V, Nb, Ga, Ta, W, and Mo;
• and
• forming a third buffer layer on the second buffer layer wherein the third buffer layer is formed of one oxide-based ceramic material selected from the group consisting of TiOy, ZrOy, and Al2Oz where the composition of oxygen is 1<y<2, or 2<z<3.

A hydrogen separation membrane comprising:

• a porous support made of a metal or ceramic material;
• a buffer layer made of a ceramic material, and formed in the form of a plurality of columns on the porous support, wherein the buffer layer is formed of a plurality of layers;
• and
• a palladium-based metal separation membrane formed on the buffer layer and capable of separating hydrogen,
• wherein the buffer layer has neighboring layers formed of different ceramic materials,
• the buffer layer comprises:
• a first buffer layer formed on the porous support, and formed of one oxide-based ceramic material selected from the group consisting of TiOy, ZrOy, and Al2Oz where the composition of oxygen is 1<y<2, or 2<z<3;
• a second buffer layer formed on the first buffer layer, and formed of an oxide-based ceramic material comprising one selected from the group consisting of Ti, Zr, Al, Si, Ce, La, Sr, Cr, V, Nb, Ga, Ta, W, and Mo;
• and
• a third buffer layer formed on the second buffer layer, and formed of one oxide-based ceramic material selected from the group consisting of TiOy, ZrOy, and Al2Oz where the composition of oxygen is 1<y<2, or 2<z<3.