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论文类型：期刊论文

发表时间：2010-01-15

发表刊物：International Symposium on Catalysis

收录刊物：SCIE、CPCI-S

卷号：149

期号：1-2

页面范围：138-142

ISSN号：0920-5861

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

摘要：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.