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Study on Preparation of Compound Activated Carbon Adsorbent and Effect of Thiophene Adsorption
Abstract:
The present work investigated the adsorption of thiophene on activated carbons impregnated with PdCl2 and different kinds of nitrate. The activated carbon was deashed with HCl, oxided with HNO3 and impregnated with PdCl2 and one kind of nitrates in acidic media, followed by drying for 12h and roasting at 350°C under N2 flow. Finally, the model diesel was adsorbed by adsorbent for 12h. They were characterized by N2 adsorption isotherms, scanning electron microscopy (SEM), transmission electron microscopy (TEM) and gas chromatography. Characterization results provided that the active components of PdCl2 and Ni(NO3)2 were effectively supported on the activated carbon. Organic sulfur compounds are preferentially adsorbed and the desulfurization rate is up to 93.05%.
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2228-2231
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June 2012
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© 2012 Trans Tech Publications Ltd. All Rights Reserved
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