CAJ | 학술논문

以铝柱撑蒙脱石为载体，用沉积沉淀法在其表面负载金属Au后制备了Au负载铝柱撑蒙脱石高效负载型催化剂。以XRD，TEM，XPS等手段对催化剂的结构进行了表征，并研究了铝柱撑蒙脱石负载前后CO催化氧化活性的变化规律。结果证明，Au是以高度分散的状态均匀分布在铝柱撑蒙脱石载体表面，且以Au0和Au3+的混合价态形式存在。CO催化氧化活性表征结果表明，负载后催化剂的催化活性有了显著提高，且其催化活性随着负载量的增加而不断增强，但当负载量增大到一定程度后，其催化活性不再继续增加，且有所下降。
이려주탱몽탈석위재체，용침적침정법재기표면부재금속Au후제비료Au부재려주탱몽탈석고효부재형최화제。이XRD，TEM，XPS등수단대최화제적결구진행료표정，병연구료려주탱몽탈석부재전후CO최화양화활성적변화규률。결과증명，Au시이고도분산적상태균균분포재려주탱몽탈석재체표면，차이Au0화Au3+적혼합개태형식존재。CO최화양화활성표정결과표명，부재후최화제적최화활성유료현저제고，차기최화활성수착부재량적증가이불단증강，단당부재량증대도일정정도후，기최화활성불재계속증가，차유소하강。
Al pillared montmorillonite as the carrier,after the surface load of the noble metal Au,catalyst was prepared by deposition precipitation. By the characterization methods such as XRD,TEM,XPS,structure of supports and catalysts were characterized. The variation law of the catalytic oxidation activity was studied. The results showed that Au was in a highly dispersed state of uniform distribution in Al pillared montmorillonite carrier surface and in mixed valence form Au0 and Au3+. The results of CO catalytic oxidation activity showed that after the load,the catalytic activity of the catalysts was significantly improved,and the catalytic activity increased with the load increasing. But when the load increased to a certain extent,its catalytic activity no longer increased,but also declined.