文献类型：期刊文献

英文题名：On the Effect of Modifications to Montmorillonite for the Desulphurization of Synthetic Gasoline

作者：Zhang, Ying[1,2];Chen, Aiping[1];Li, Chunzhong[1];Luo, Meifang[1];Xu, Zhenliang[2]

机构：[1]E China Univ Sci & Technol, Sch Mat Sci & Engn, Minist Educ, Key Lab Ultrafine Mat, Shanghai 200237, Peoples R China;[2]E China Univ Sci & Technol, Chem Engn Res Ctr, Membrane Sci & Engn R&D Ctr, Shanghai 200237, Peoples R China

年份：2011

卷号：29

期号：2

起止页码：197

外文期刊名：ADSORPTION SCIENCE & TECHNOLOGY

收录：;EI(收录号：20113214213585);WOS:【SCI-EXPANDED(收录号:WOS:000293546100007)】；

基金：We are grateful to the National Basic Research Program of China (No. 2004CB719501) and the PetroChina Company Limited for financial support via the Science Technology Venture Innovation Program (No. 050511-3-2).

语种：英文

外文关键词：Gasoline - Adsorption - Thermodynamics - Clay minerals

摘要：The preparation, characterization and desulphurization of hexadecyltrimethylammonium bromide (CTAB)-intercalated montmorillonite (CTAB-MMT) and SiO(2)Ce-pillared montmorillonite (SiO(2)Ce-MMT) is described. CTAB-MMT, SiO(2)Ce-MMT and MMT (the original clay) were examined for their ability to remove thiophene sulphur from normal heptane solution as well as from synthetic gasoline. The adsorption thermodynamics and kinetics on all three adsorbents were investigated when it was found that SiO(2)Ce-MMT possessed a higher adsorption capacity than MMT and CTAB-MMT. The adsorption capacity increased as the temperature increased in the range 303-333 K. The data for the adsorption equilibrium were well fitted by the Freundlich isotherm model. Negative values of Delta G(0) suggested that the adsorption process was spontaneous. Furthermore, positive Delta H(0) and Delta S(0) values indicated that the adsorption was endothermic and irreversible.