Journal of Industrial and Engineering Chemistry, Vol.10, No.4, 511-515, July, 2004
Adsorptive Desulfurization of Natural Gas for Fuel Cells
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Desulfurization of natural gas using the adsorption method for fuel cells has been investigated. Sulfur capacities of activated carbon (AC), Fe/AC, BEA zeolite (BEA), and Fe/BEA were obtained from the breakthrough curves of tert-butyl mercaptan (TBM) and tetrahydrothiophene (THT). Temperature programmed desorption (TPD) of TBM and THT was conducted on the adsorbents also. The sulfur-adsorption capacities appear to be closely related to the desorption area of chemisorbed sulfur compounds. Fe/BEA (Fe: 3%) prepared by the ion-exchange method exhibits the highest sulfur capacity (19.6% gS-comp/gsorb) among the adsorbents tested because of the strong chemisorption of sulfur compounds on the Lewis acid sites present in BEA zeolite and the beneficial Fe effect on the Fe/BEA adsorbent through the possibility of complexation.
- Dicks AL, J. Power Sources, 61, 113 (1996)
- Nagase S, Takami S, Hirayama A, Hirai Y, Catal. Today, 45(1-4), 393 (1998)
- McCarty JG, Wise H, J. Chem. Phys., 74, 5877 (1981)
- McCarty JG, Wise H, J. Chem. Phys., 72, 6332 (1980)
- Liu ZW, Jun KW, Roh HS, Park SE, J. Power Sources, 111(2), 283 (2002)
- Ma XL, Sun L, Song CS, Catal. Today, 77(1-2), 107 (2002)
- Yang RT, Hernandez-Maldonado AJ, Yang FH, Science, 301, 79 (2003)
- Park JW, Lee YW, Choi DK, Lee SS, J. Ind. Eng. Chem., 9(4), 381 (2003)
- Lee MG, Cheon JK, Kam SK, J. Ind. Eng. Chem., 9(2), 174 (2003)