Cumnox Synthesis Lab Report

2. Experimental

2.1. Catalyst preparation

The CuMnOx catalyst was prepared by the co-precipitation method, the aqueous solution manganese acetate (Mn(CH3COO)2.4H2O) and copper (II) nitrate (Cu(NO3)2.2.5H2O) were premixed by stirring for 1 hour. After the proper mixing of the copper nitrate and manganese acetate solution, it was added to the aqueous KMnO4 solution by a burette under the stirring conditions. After dropped completely the copper manganese solution into the precipitant ageing for 2h, then filtered, washing several times with hot deionized water. After washing drying the precursor in an oven and calcination it in flowing air calcination conditions before measuring of the catalyst activity test. The amount of copper was added varied to the preparation of CuMnOx catalysts with nominal Cu/Mn molar ratios. After drying of the precursors their granules were crushed into powdered form for activity measurement purposes.

2.2 Characterization of catalysts

The Scanning electron micrographs (SEM-EDX) produced the high-resolution image of a catalyst by an electron beam and the

The CO oxidation efficiency was confirmed as a function of the [Cu]/[Mn] ratio and the reaction time. The binary Cu-Mn oxides have a flexible metal valences (Cu1+/2+ and Mn3+/4+) which give increase to their specific properties and outstanding catalytic activities for CO oxidation. The enhanced catalytic performance can be explained by the improved lattice oxygen mobility, specific surface area, and pore volume into the Cu-Mn catalysts. The binary Cu-Mn mixed metal oxide has a good potential for practical applications to decrease CO in air