纳米SiO_2颗粒组装改性蒙脱土汽油脱硫剂  

Montmorillonite Assembled with Nano-SiO_2-particles for Gasoline Desulfurization

作　　者：赵少云[1] 陈爱平[1] 刘伟[1] 陈晓萍[1] 

机构地区：[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,上海200237

出　　处：《无机材料学报》2006年第4期953-957,共5页Journal of Inorganic Materials

基　　金：上海市纳米专项(0452nm018);973计划资助项目(2004CB719501)

摘　　要：以钠基蒙脱土为原料,利用模板导向技术在其层间组装多孔纳米SiO2颗粒,并浸溃负载过渡金属氧化物纳米颗粒制得汽油脱硫剂．通过XRD、TG、TEM、FT-IR和孔结构分析等手段表征了合成的多孔材料的结构和性能．汽油吸附脱硫实验结果表明,经纳米材料组装改性的蒙脱土具有择形吸附的特性,对汽油中的含硫化合物的脱除率相比钠基蒙脱土提高了52％．过渡金属氧化物纳米颗粒改性补强SiO2柱撑蒙脱土的热稳定性有显著提高．Montmorillonite （MMT） is a natural layer-layer material. The template-directed method was used to assemble the nano-SiO2-particles within the layers of MMT. And a desulfurizer for gasoline was developed through loading the transition metal oxide on Si/MMT. The modified montmorillonite was characterized by XRD, TG, TEM, FT-IR and N2 adsorption-desorption. The results of gasoline desulfurization show that nano-particle assembled montmorillonite is an excellent selective adsorbent and its desulfurization ratio is increased by 52% than Na-MMT. The SiO2 pillared montmorillonite modified with rare earth oxides and transition metal oxides nanoparticles shows an excellent heat-stability.

关 键 词：蒙脱土 模板导向 组装 汽油脱硫 

分 类 号：TB383[一般工业技术—材料科学与工程] TQ426[化学工程]