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›› 2008, Vol. 8 ›› Issue (3): 484-488.

• 反应与分离 • Previous Articles     Next Articles

Synchronous Desulfurization and Denitrification of Gasoline by Porous Pillared Clay

HE Yan CHEN Ai-ping ZHANG Ying LIU Wei   

  1. School of Materials Science and Engineering, East China Univertity of Science and Technology Key Laboratory for Ultrafine Materials of the Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences Key Laboratory for Ultrafine Materials of the Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology
  • Received:2008-01-28 Revised:2008-03-13 Online:2008-06-20 Published:2008-06-20
  • Contact: CHEN Ai-ping

多孔柱撑粘土及其汽油同步脱硫脱氮性能

何艳 陈爱平 张颖 刘伟   

  1. 华东理工大学材料科学与工程学院超细材料制备与应用教育部重点实验室 华东理工大学材料科学与工程学院超细材料制备与应用教育部重点实验室 中国科学院过程工程研究所生化工程国家重点实验室 华东理工大学材料科学与工程学院超细材料制备与应用教育部重点实验室
  • 通讯作者: 陈爱平

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Abstract: Zr and Zr-Ce pillared clays were prepared using Ca-montmorillonite (Ca-MMT) as clay material by different methods. The intercalation solutions were prepared using ZrOCl2·8H2O and Ce(NO3)3 as precusors. Synchronous adsorptive desulfurization and denitrification of gasoline were investigated with the modified clays. The results show that clean gasoline with low sulfur and nitrogen could be produced. The intercalated clay was characterized by XRD, N2 adsorption-desorption and SEM analysis. And the structural model was proposed in pillared intercalation process. The XRD result shows that d001 of the modified clay is 2.38 nm, which is much larger than Ca-MMT of 1.54 nm. The specific surface area and specific pore volume of the pillared clays also increase obviously. The results show that the efficiencies of denitrification and desulfurization of the gasoline by the modified montmorillonite are 72.8% and 58.7% respectively.

Key words: Zr-pillared clays, Zr-Ce pillared clays, synchronous desulfurization and denitrification, gasoline

摘要： 以钙型蒙脱土为原料，以ZrOCl2×8H2O和Ce(NO3)3为交联改性液的前驱体，制备了锆交联粘土和铈改性锆交联粘土，采用吸附法同步脱除汽油中的含硫和含氮物质，从而得到低硫、低氮清洁汽油. 采用XRD和BET孔结构分析、SEM等方法对制备的多孔柱撑粘土结构进行了表征，并提出了粘土交联改性过程中结构变化的模型. 结果表明，交联后粘土层间距d001值可达2.38 nm，比原土的1.54 nm有显著增大，比表面积和孔容明显增大，对汽油中含氮、含硫化合物的同步脱除率分别达72.8%和58.7%.

关键词: 锆交联粘土, 锆铈交联粘土, 同步脱硫脱氮, 汽油

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