Li Chang-yan, Hu Zong-xue, Li He, Shen Yue-nian, Zhang Jun
(1 College of Chemistry and Chemical Engineering, 2 College of Life Sciences, Inner Mongolia University, Hohhot 010021, P R China)
Abstract: 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 catalysts 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.
Keywords: Nanogold; Iron chemical speciation; Colloidal deposition; Formaldehyde catalytic oxidation
E-mail: cejzhang@imu.edu.cn
Journal of Molecular Catalysis, Vol. 24, Issue 1, 2010, 31~36
