Adjusting Host Properties to Promote Cuprous Chloride Dispersion and Adsorptive Desulfurization Sites Formation on SBA-15

详细信息    查看全文

• 作者：Gu-Se He ; Lin-Bing Sun ; Xue-Lin Song ; Xiao-Qin Liu ; Yu Yin ; Yu-Chao Wang
• 刊名：Energy & Fuels
• 出版年：2011
• 出版时间：August 18, 2011
• 年：2011
• 卷：25
• 期：8
• 页码：3506-3513
• 全文大小：914K
• 年卷期：v.25,no.8(August 18, 2011)
• ISSN：1520-5029

文摘

Deep desulfurization via 蟺-complexation adsorption is a promising method for the purification of transportation fuels. The desulfurization performance of an adsorbent has been proven to strongly depend on the dispersion extent of adsorption active species. In this paper, we report a strategy to promote the dispersion of active species CuCl on mesoporous silica SBA-15 by incorporating alumina. By use of such a strategy, properties of the host SBA-15 were successfully adjusted. The enhancement of host鈥揼uest interaction and the improvement of surface hydrophilicity were realized simultaneously. Furthermore, the solid-state ion exchange between CuCl and formed Br枚nsted acid sites (H⁺) was observed, which leads to the generation of isolated cuprous species. As a result, the dispersion of guest CuCl on the host was efficiently promoted. We also demonstrated that the obtained material, CuCl supported on SBA-15 incorporated with 10 wt % of alumina, can capture 0.240 mmol路g^鈥? thiophene, which is obviously higher than that over CuCl/SBA-15 (0.167 mmol路g^鈥?). Our materials may provide a potential candidate for application in adsorptive desulfurization.