摘要
采用溶胶沉积法、共沉淀法制备了负载型Au/Fe-O催化剂,运用X-射线粉末衍射(XRD)、透射电镜(TEM)、电感耦合等离子原子发射光谱(ICP-AES),比表面和X射线光电子能谱(XPS)技术对其进行了表征,考察了Au/Fe-O催化剂对甲醛的催化氧化活性.金负载量相同的条件下,溶胶沉积法制备的样品甲醛催化氧化活性好于共沉淀法制备的样品.实验结果表明:六面体的FeOOH载体担载了较多活性组分纳米金,是影响甲醛催化氧化活性的主要原因.
Au/Fe-O catalysts were prepared by colloidal deposition （CD） and co-precipitation （CP） methods. These samples were characterized by means of X-ray diffraction （XRD） , transmission electron microscopy techniques （TEM）, inductively coupled plasma atomic emission spectrum（ ICP-AES）, specific surface and X-ray photoelectron spectroscopy（XPS）. Catalytic oxidation reactions of formaldehyde were investigated. The results showed that Au/Fe-O catalysts prepared by colloidal deposition （CD） exhibited better catalytic activity than Au/Fe-O cata- lysts prepared by co-precipitation （CP） at same gold weight percentage content. It was found that hexahedron FeOOH loaded nano gold superior to Fe2O3 , which played an important role at the activity of formaldehyde catalytic oxidation.
出处
《分子催化》
EI
CAS
CSCD
北大核心
2010年第1期31-36,共6页
Journal of Molecular Catalysis(China)
基金
国家自然科学基金资助项目(20601012和2026300)
内蒙古公共安全科技行动项目(208096)
内蒙古大学青年基金(ND412)资助
关键词
纳米金
载体形貌
溶胶沉积
甲醛催化氧化
Nanogold
Iron chemical speeiation
Colloidal deposition
Formaldehyde catalytic oxidation
