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Comparative Study on Adsorptive Removal of Organic Sulfur Compounds over Cu-Exchanged NaY Zeolites  

Jung, Gap Soon (Department of Chemical Engineering, Pukyong National University)
Lee, Suk Hee (Department of Chemical Engineering, Pukyong National University)
Cheon, Jae Kee (Department of Chemical Engineering, Pukyong National University)
Park, Dong Ho (Department of Biomedicinal Chemistry, Inje University)
Woo, Hee Chul (Department of Chemical Engineering, Pukyong National University)
Publication Information
Korean Chemical Engineering Research / v.48, no.4, 2010 , pp. 534-539 More about this Journal
Abstract
The adsorptive removal of organic sulfur compounds including tert-butylmercaptane(TBM), tetrahydrothiophene(THT) and dimethylsulfide(DMS) in methane was investigated over NaY and copper-exchanged NaY(CuNaY) zeolites at 303 K and atmospheric pressure. In the ternary adsorption system, the preferential adsorption of THT over other sulfur compounds on NaY and the concurrent adsorption of all sulfur compounds on CuNaY were achieved, which could be explained by the breakthrough curve, the temperature-programmed desorption, and the apparent activation energy for desorption. The sulfur uptake capacity of CuNaY(2.90~3.20 mmol/g) was much higher than that of NaY(0.70~0.90 mmol/g). A comparative study indicated that the $Cu^{1+}$ sites and acidity of CuNaY were probably responsible for the strong interaction with sulfur atom and high sulfur uptake abilities.
Keywords
Desulfurization; Fuel cell; Zeolite; Adsorption; Activation Energy;
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Times Cited By KSCI : 3  (Citation Analysis)
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