摘要
通过超声波辅助后合成方法制备了一种新型Fe2O3担载SBA-15硅酸盐介孔材料,并于室温条件下进行了材料的0.1%硫化氢气体的脱硫实验。研究了Fe2O3的化学特性和材料的结构特性对脱硫性能的影响。使用氮吸附、X射线衍射、X射线能谱、透射电子显微镜、电感耦合等离子体发射光谱等方法对脱硫实验前后的材料进行了表征。结果显示,担载改性未改变SBA-15的二维六角形介孔结构。铁种类以铁氧化物晶体相形态分布于孔道内和外表面上。介孔材料的结构特性和铁氧化物高反应活性的共同作用使得材料具有出色的脱硫活性。
A novel silicate mesoporous material, SBA15 supported Fe2O3, was synthesized by post-synthesis method. The desulfurization test for a gas mixture containing 0. 1 vol. 0/40 H2S was carried out over SBA-15 supported Fe2O3 in a fixed-bed system at atmospheric pressure and room temperature. The effects of the chemical nature of Fe20a and the textural properties of the material on desulfurization capacity were studied. Materials before and after the desulfuriza- tion test were characterized using nitrogen adsorption, XRD, TEM, XPS, ICP and other standard methods. The charac terization results suggested that modification process does not change the two-dimensional hexagonal mesostructure of SBA 15. Iron species dispersed inside channels and the outside surface in the crystalline phase of iron oxide. Structural properties of the material also plaied important roles in desulfurization performance besides the catalytic effects of iron oxide. The basic feature of material and enough oxygen supply were benefit for the reaction. SBA-15 supported Fe2O3 can be an effective alternative to capture H2 S from gas streams.
出处
《化工新型材料》
CAS
CSCD
北大核心
2011年第12期134-137,共4页
New Chemical Materials
关键词
硫化氢
脱硫
铁氧化物
介孔材料
改性
纳米结构
hydrogen sulfide, sulfur removal, iron oxide, mesoporous material, modification, nanostructure.
