CAJ | 학술논문

通过等体积浸渍法制备了金属有机骨架材料MIL-53(Al)(MIL：Materials of Institut Lavoisier)负载纳米Pd催化剂.采用X射线衍射(XRD)、透射电子显微镜(TEM)和X射线光电子能谱(XPS)等手段对催化剂的结构进行了表征.催化剂在反应前后XRD衍射峰保持不变,说明载体MIL-53(Al)具有良好的稳定性.采用TEM对催化剂进行表征,结果表明, MIL-53(Al)的多孔晶体结构有助于形成高度分散的纳米Pd颗粒,样品2.7%(w) Pd/MIL-53中Pd颗粒的平均粒径为2.21 nm.该催化剂在CO氧化反应中表现出较高的催化活性,115°C达到完全转化.同时催化剂可循环使用,多次反应后催化活性和催化剂结构都保持稳定.
통과등체적침지법제비료금속유궤골가재료MIL-53(Al)(MIL：Materials of Institut Lavoisier)부재납미Pd최화제.채용X사선연사(XRD)、투사전자현미경(TEM)화X사선광전자능보(XPS)등수단대최화제적결구진행료표정.최화제재반응전후XRD연사봉보지불변,설명재체MIL-53(Al)구유량호적은정성.채용TEM대최화제진행표정,결과표명, MIL-53(Al)적다공정체결구유조우형성고도분산적납미Pd과립,양품2.7%(w) Pd/MIL-53중Pd과립적평균립경위2.21 nm.해최화제재CO양화반응중표현출교고적최화활성,115°C체도완전전화.동시최화제가순배사용,다차반응후최화활성화최화제결구도보지은정.
Pd nanoparticles (NPs) supported on a metal-organic framework (MOF), MIL-53(Al) (MIL:Ma-terials of Institut Lavoisier), were prepared using the incipient wetness impregnation method. The struc-tures of the synthesized Pd/MIL-53(Al) catalysts were determined using X-ray diffraction (XRD), transmis-sion electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS). The same peaks were ob-served in the XRD patterns of Pd/MIL-53(Al) before and after the catalytic reaction, confirming that the in-tegrity of the MIL-53(Al) support was maintained. The TEM results indicated that the crystal ine porous structure of MIL-53(Al) favored the formation of highly dispersed Pd NPs of average size 2.21 nm. The het-erogeneous catalytic composite materials exhibited high activities for CO oxidation, with ful conversion at 115 °C. The catalytic activity and structure of Pd/MIL-53(Al) were stable after several reaction runs.