Desulfurization adsorbent for fuel cell and desulfurizing method using the same

A method of producing a desulfurization adsorbent in the form of a crystalline porous molecular sieve, the method comprising:

• combining and mixing a silicon source material and a titanium source material and a source material of boron, gallium or indium in an aqueous alkali solution to produce a mixed solution;
• placing the mixed solution into a sealed container and subjecting the mixed solution to a hydrothermal treatment to obtain a crystalline porous molecular sieve material;
• and
• washing and drying the crystalline porous molecular sieve material to obtain the desulfurization adsorbent.

A method of producing a desulfurization adsorbent in the form of a crystalline porous molecular sieve, the method comprising:

• combining and mixing a silicon source material, a titanium source material and a source of boron, gallium, or indium, in an aqueous alkali solution to produce a mixed solution;
• placing the mixed solution into a sealed container and subjecting the mixed solution to a hydrothermal treatment to obtain a crystalline porous molecular sieve material;
• washing and drying the crystalline porous molecular sieve material to obtain the desulfurization adsorbent;
• and
• optionally subjecting the desulfurization adsorbent to ion exchange with a source of at least one of alkali metal, alkaline earth metals, hydrogen, ammonium, rare earths, and transition metals;
• wherein the desulfurization adsorbent has a structure represented by Formula 1 below:
• (M1)a-(Si)x—(Ti)y-(M2)z-O [Formula 1]
• wherein M1 is at least one selected from alkali metals, alkaline earth metals, hydrogen, ammonium, rare earths, and transition metals;
• 4≦x/y≦500;
• 0<z/y≦3;
• 0<a/(y+z)≦1;
• and
• M2 is boron (B), gallium (Ga), or indium (In).

A desulfurization adsorbent in the form of a crystalline porous molecular sieve having a structure represented by Formula 1 below:

• (M1)a-(Si)x—(Ti)y-(M2)z-O [Formula 1]
• wherein M1 is at least one selected from lithium, cobalt and nickel;
• 4≦x/y≦500;
• 0<z/y≦3;
• 0<a/(y+z)≦1;
• and
• M2 is boron (B), aluminum (Al), or a trivalent metal.