Manganese dioxide composite metal oxide catalyst, preparation method and application
A composite metal and manganese dioxide technology, applied in the direction of metal/metal oxide/metal hydroxide catalyst, physical/chemical process catalyst, chemical/physical process, etc., can solve the problem of easy deactivation of surface catalytic activity, small surface area, No decomposition of sodium hypochlorite catalytic performance and other problems, to achieve the effect of increased catalytic active points, increased area, and reduced height
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Embodiment 1
[0034] Embodiment 1: manganese dioxide composite metal oxide catalyst (MnO 2 CuO composite catalyst) preparation
[0035] (1) Mix 0.845g (0.005mol) of manganese sulfate and 1.28g (0.005mol) of copper sulfate and dissolve them in 1000ml of water, then slowly add 1.58g (0.01mol) of potassium permanganate to make a mixed aqueous solution; at 45°C Under stirring for 8 hours, the precursor solution was obtained;
[0036] (2) Add the precursor solution obtained in step (1) into a 1500ml hydrothermal reaction kettle, conduct a hydrothermal reaction at 150°C for 12 hours, cool the reaction solution naturally and filter, wash the filter cake with water, and dry at 80°C for 6 hours After that, the brown-black powder MnO was obtained 2 For the CuO composite catalyst, that is, the manganese dioxide composite metal oxide catalyst, the amount of raw materials and products in industrial production are shown in Table 1.
[0037] by XRD (see figure 2 shown), SEM (see image 3 Shown), EDS...
Embodiment 2
[0040] Embodiment 2: manganese dioxide composite metal oxide catalyst (MnO 2 FeO composite catalyst) preparation
[0041] (1) Mix 0.845g (0.005mol) of manganese sulfate and 4.0g (0.005mol) of ferric sulfate and dissolve them in 1000ml of water, then slowly add 1.58g (0.01mol) of potassium permanganate to make a mixed aqueous solution. Stir for 8 hours to obtain a precursor solution;
[0042] (2) Add the precursor solution obtained in step (1) into a 100ml hydrothermal reaction kettle, and conduct a hydrothermal reaction at 150°C for 12 hours. After the reaction solution is naturally cooled, filter it, wash the filter cake with water, and dry it at 80°C for 6 hours to obtain Brown black powder MnO 2 Fe 2 o 3 Composite material, that is, manganese dioxide composite metal oxide catalyst, the amount of raw materials and product amount in industrial production are shown in Table 2.
[0043] by XRD (see Figure 4 shown), SEM (see Figure 5 Shown), EDS and other material struc...
Embodiment 3
[0047] (1) will The Raschig ceramic ring was soaked at room temperature (20° C.) for 10 h with a hydrofluoric acid aqueous solution with a mass concentration of 10%, filtered, and the filter cake was washed with water to obtain a roughened Raschig ceramic ring; Tetrafluoroethylene emulsion is diluted to mass concentration 30% with the ethanol aqueous solution of volume concentration 95%, then the roughened Raschig ceramic ring that step (1) obtains is soaked in the diluted mass concentration 30% polytetrafluoroethylene emulsion , soaked at room temperature for 10 minutes to obtain a Raschig ceramic ring coated with polytetrafluoroethylene on the surface, and then place the Raschig ceramic ring coated with polytetrafluoroethylene on the surface in the manganese dioxide composite metal oxide catalyst prepared in Example 1 Roll to make the manganese dioxide composite metal oxide catalyst adhere to the surface of the Raschig ceramic ring coated with polytetrafluoroethylene, dry a...
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