文献类型：期刊文献

英文题名：Desulfurization of Model Gasoline on Modified Bentonite

作者：Tang, Xiao-lin[1];Meng, Xuan[1];Shi, Li[1]

机构：[1]E China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2011

卷号：50

期号：12

起止页码：7527

外文期刊名：INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH

收录：;EI(收录号：20112514072662);WOS:【SCI-EXPANDED(收录号:WOS:000291323000048)】；

语种：英文

外文关键词：Fourier transform infrared spectroscopy - Thermoanalysis - Potash - Surface chemistry - X ray diffraction - Copper compounds - Iron compounds - Sulfur - Desulfurization

摘要：This work mainly involved the investigation of the adsorption of propylmercaptan (PM) on modified bentonite adsorbents. The adsorbents were prepared by loading it separately with Cu2+, Cu+, Fe3+, and MnO4-. In general, these bentonite adsorbents tested for sulfur adsorption capacity at breakthrough followed the order: KMnO4-bentonite > Cu(I)-bentonite > Cu(II)-bentonite > Fe(III)-bentonite. Several factors that influence the desulfurization capability, including loading and baking temperature, were investigated. The results of X-ray diffraction (XRD), nitrogen sorption (BET), thermal analysis (TGA), and Fourier transform infrared (FT-IR) spectroscopy showed that the ability of modified bentonite to adsorb PM depends strongly on its surface chemistry, particularly on the presence of basic oxygen-containing groups and acid content. The high sulfur capacities of KMnO4-bentonite and Fe(III)-bentonite were because of the powerful oxidization of MnO4- and Fe3+. The high sulfur capacities of Cu(I)-bentonite and Cu(II)-bentonite were due to pi-complexation.