CAJ | 학술논문

用浸渍法分别将铂、钯负载在铝柱撑蒙脱石载体上，制备了铂、钯负载铝柱撑蒙脱石催化剂。运用X射线衍射（XRD）、原子吸收光谱（AAS）、透射电镜（TEM）等分析方法对样品的性能和结构进行了表征，并考察了不同铂、钯负载量的催化剂对一氧化碳的催化氧化性能。结果表明，铂、钯均以高度分散的纳米粒子状态均匀分布在载体表面，并表现出良好的CO催化氧化活性。铂、钯在铝柱撑蒙脱石载体表面的有效负载率在70%～76%之间，在相同的设计负载量条件下，铂的实际负载量和有效负载率均略大于钯。CO催化氧化试验结果表明，相对于负载前，负载后催化剂的催化活性明显增加，且其催化活性随着铂、钯负载量的增加而不断增强。在相同温度和负载量条件下，钯负载型催化剂的催化活性明显高于铂负载型催化剂。
용침지법분별장박、파부재재려주탱몽탈석재체상，제비료박、파부재려주탱몽탈석최화제。운용X사선연사（XRD）、원자흡수광보（AAS）、투사전경（TEM）등분석방법대양품적성능화결구진행료표정，병고찰료불동박、파부재량적최화제대일양화탄적최화양화성능。결과표명，박、파균이고도분산적납미입자상태균균분포재재체표면，병표현출량호적CO최화양화활성。박、파재려주탱몽탈석재체표면적유효부재솔재70%～76%지간，재상동적설계부재량조건하，박적실제부재량화유효부재솔균략대우파。CO최화양화시험결과표명，상대우부재전，부재후최화제적최화활성명현증가，차기최화활성수착박、파부재량적증가이불단증강。재상동온도화부재량조건하，파부재형최화제적최화활성명현고우박부재형최화제。
Pt-supported Al Pillared Montmorillonite and Pd-supported Al Pillared Montmorillonite were prepared by impregnation method. By using X-ray diffraction (XRD), atomic absorption spectroscopy (AAS), and transmission electron microscopy (TEM), properties and structure of samples were characterized. CO catalytic oxidation performance of different deposition of Pt or Pd were investigated. The results showed that Pt or Pd showed good catalytic activity on CO oxidation in a highly dispersed state of uniform distribution on Al Pillared Montmorillonite carrier. Platinum or palladium on Al Pillared Montmorillonite carrier had effective load rate of 70%-76%. Under the same amount of design load conditions, the actual load amount and effective load rate of platinum was slightly more than that of palladium. By experimental results of CO catalytic oxidation compared with that before-loading, catalytic activity of the after-loading catalysts was significantly inproved and increased. Under the condition of same temperature and deposition, catalytic activity of Pd-supported catalyst was significantly higher than that of Pt-supported catalyst.