Catalyst – solid sorbent – or support therefor: product or process – Solid sorbent – Silicon containing
Reexamination Certificate
2006-10-20
2010-11-30
Caldarola, Glenn (Department: 1797)
Catalyst, solid sorbent, or support therefor: product or process
Solid sorbent
Silicon containing
C502S406000
Reexamination Certificate
active
07842645
ABSTRACT:
A desulfurization adsorbent for a fuel cell has a structure according to Formula 1 below, and a desulfurizing method uses the desulfurization adsorbent. The desulfurization adsorbent displays remarkably excellent adsorption performance for adsorbing sulfur compounds as well as excellent regeneration performance, compared with conventional desulfurization adsorbents. Thus, the desulfurization adsorbent does not need to be replaced even after prolonged use, thus stabilizing the operation of a fuel cell system and reducing costs.in-line-formulae description="In-line Formulae" end="lead"?(M1)a-(Si)x—(Ti)y-(M2)z-O [Formula 1]in-line-formulae description="In-line Formulae" end="tail"?wherein M1is 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 M2is aluminum (Al), boron (B) or a trivalent metal. The desulfurization adsorbent is produced by subjecting a mixture of a silicon source, a titanium source, and optionally, aluminum, boron or a trivalent metal in an alkali solution to a hydrothermal treatment to obtain a crystalline porous molecular sieve.
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Kim Soon-ho
Lee Hyun-chul
Woo Hee-chul
Boyer Randy
Caldarola Glenn
Lee & Morse P.C.
Samsung SDI & Co., Ltd.
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