Abstract:

Two kinds of mesoporous SBA-15 materials modified with zinc oxide（ZnO）nanoparticles were synthesized via different routes，their desulphurization performance was evaluated with a gas mixture containing 0.1% hydrogen sulfide. The materials before and after desulphurization were analyzed using nitrogen adsorption，X-ray diffraction（XRD），energy dispersive X-ray spectrometry（EDS），transmission electron microscope（TEM）and inductive coupled plasma（ICP）etc. The mesoporous materials modified with ZnO via different preparation methods showed differences in texture and capability for hydrogen sulfide capture. These two materials synthesized by different routes showed capability for hydrogen sulfide capture of 336% and 77.3% higher than that of ZnO adsorbent commercially used，respectively. SBA-15 supported ZnO nanoparticles using ultrasonic method showed superior capability for hydrogen sulfide capture. The prominent enhancement of desulphurization activity was attributed to the integration of high surface area of the mesoporous materials and the promising reactivity of ZnO nanoparticles.

摘要：

采用两种不同路线合成了纳米氧化锌改性SBA-15的复合介孔材料，并在材料上进行了含有0.1%硫化氢气体的脱硫实验。使用氮吸附、X射线衍射、X射线能谱、透射电子显微镜和电感耦合等离子体原子发射光谱方法对实验前后的材料进行了表征。不同路线合成材料的结构、硫化氢捕集能力有较大区别。两种合成途径制备的材料（S/Z、SZ）分别较商用氧化锌脱硫剂的穿透硫容高出336%和77.3%，其中超声波辅助浸渍法制备的介孔脱硫剂的脱硫性能最佳。高效的脱硫活性源自介孔材料的高比表面积和纳米颗粒的高反应活性的共同作用。