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.
出处
《无机材料学报》
SCIE
EI
CAS
CSCD
北大核心
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)
关键词
蒙脱土
模板导向
组装
汽油脱硫
montmorillonite
template-directed
assemble
gasoline desulfurization
