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.