Alumina film with nano-pore array structure was prepared by anodic oxidation of aluminum matrix with different techniques treated in phosphoric acid solution.It was indicated that aluminum matrix with different compos...Alumina film with nano-pore array structure was prepared by anodic oxidation of aluminum matrix with different techniques treated in phosphoric acid solution.It was indicated that aluminum matrix with different composition had a great effect on the formation process and nano-pore array structure of alummina film.It was found out that the basic cause of such effect was the difference of the crystal defect density of aluminum matrix.展开更多
将普通共沉淀法制备的 L a Ni O3 复合氧化物进行超声波处理 ,以 NO、CO的催化燃烧为模型反应 ,考察超声波处理对 L a Ni O3 复合氧化物催化活性的影响。采用 TEM、SEM、BET和 XPS等表征手段研究超声波处理对L a Ni O3 复合氧化物粒径...将普通共沉淀法制备的 L a Ni O3 复合氧化物进行超声波处理 ,以 NO、CO的催化燃烧为模型反应 ,考察超声波处理对 L a Ni O3 复合氧化物催化活性的影响。采用 TEM、SEM、BET和 XPS等表征手段研究超声波处理对L a Ni O3 复合氧化物粒径、表面形貌、比表面积和表面组成的影响 ,揭示超声波处理提高 L a Ni O3 复合氧化物催化活性的机理。结果表明 ,超声波辐射可以使 L a Ni O3 复合氧化物粒径减小、比表面积增加、表面晶格氧缺位和表面吸附氧增加 ,使 L a Ni O3 催化剂催化 NO分解和展开更多
文摘Alumina film with nano-pore array structure was prepared by anodic oxidation of aluminum matrix with different techniques treated in phosphoric acid solution.It was indicated that aluminum matrix with different composition had a great effect on the formation process and nano-pore array structure of alummina film.It was found out that the basic cause of such effect was the difference of the crystal defect density of aluminum matrix.
文摘将普通共沉淀法制备的 L a Ni O3 复合氧化物进行超声波处理 ,以 NO、CO的催化燃烧为模型反应 ,考察超声波处理对 L a Ni O3 复合氧化物催化活性的影响。采用 TEM、SEM、BET和 XPS等表征手段研究超声波处理对L a Ni O3 复合氧化物粒径、表面形貌、比表面积和表面组成的影响 ,揭示超声波处理提高 L a Ni O3 复合氧化物催化活性的机理。结果表明 ,超声波辐射可以使 L a Ni O3 复合氧化物粒径减小、比表面积增加、表面晶格氧缺位和表面吸附氧增加 ,使 L a Ni O3 催化剂催化 NO分解和
