Metal Phosphate-Supported Pt Catalysts for CO Oxidation

Materials

Hongmei Qin¹  Yi Lin¹  Zhen Ma¹  Xiaoshuang Qian¹  Tao Meng¹ 

[1] Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP3),Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China;

关键词: metal phosphate;    hydroxyapatite;    Pt catalyst;    CO oxidation;   

DOI  :  10.3390/ma7128105

来源: DOAJ

【 摘 要 】

Oxides (such as SiO2, TiO2, ZrO2, Al2O3, Fe2O3, CeO2) have often been used to prepare supported Pt catalysts for CO oxidation and other reactions, whereas metal phosphate-supported Pt catalysts for CO oxidation were rarely reported. Metal phosphates are a family of metal salts with high thermal stability and acid-base properties. Hydroxyapatite (Ca10(PO4)6(OH)2, denoted as Ca-P-O here) also has rich hydroxyls. Here we report a series of metal phosphate-supported Pt (Pt/M-P-O, M = Mg, Al, Ca, Fe, Co, Zn, La) catalysts for CO oxidation. Pt/Ca-P-O shows the highest activity. Relevant characterization was conducted using N2 adsorption-desorption, inductively coupled plasma (ICP) atomic emission spectroscopy, X-ray diffraction (XRD), transmission electron microscopy (TEM), CO2 temperature-programmed desorption (CO2-TPD), X-ray photoelectron spectroscopy (XPS), and H2 temperature-programmed reduction (H2-TPR). This work furnishes a new catalyst system for CO oxidation and other possible reactions.

【 授权许可】

Unknown