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Indexed by:期刊论文

Date of Publication:2010-01-15

Journal:International Symposium on Catalysis

Included Journals:SCIE、CPCI-S

Volume:149

Issue:1-2

Page Number:138-142

ISSN No.:0920-5861

Key Words:Selective desulfurization; Model gasoline; Thiophene; Dibenzothiophene; Ag+/Al-MSU-S; pi-Complexation

Abstract:The desulfurization of model gasoline containing 600 ppmw thiophene or dibenzothiophene (DBT) by selective adsorption over Ag+ exchanged mesoporous material Al-MSU-S was studied in a fixed adsorbent bed at ambient temperature and pressure. The results showed chat the sulfur capacity increased with Al content incorporated in the silicate framework and Ag+ exchange can effectively improve the desulfurization performance. The best adsorbent, Ag+/20%Al-MSU-S, has adsorption capacity of 5 or 20 ml model gasoline containing thiophene or DBT per gram adsorbent, respectively, before the detection limit in our experiments, as a result of pi-complexation. The adsorbent can be regenerated more than six times by simple calcination in air at 350 degrees C without obvious losing the Sulfur adsorption capacity. (C) 2009 Elsevier B.V. All rights reserved.