Catalytic oxidation catalyst for methyl acetate in organic waste gas and preparation method thereof
A technology for catalytic oxidation of methyl acetate, applied in the direction of metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problems of poor stability, impact, low complete oxidation activity, etc. problems, to achieve the effect of good stability, simple preparation and high use value
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example 1
[0035] Weigh 3g γ-Al 2 o 3 Activated alumina particles, ground to less than 250 mesh, powder bulk density of 0.835g / ml. Taking by weighing concentration is the manganese nitrate solution 30g of 50wt% (mass percentage), and Ce(NO 3 ) 3 ·6H 2 O, La(NO 3 ) 3 ·6H 2 O, Cu(NO 3 ) 3 3H2O, ammonium metavanadate, ammonium tungstate, Fe(NO 3 ) 3 9H2O, Co(NO 3 ) 3 ·6H 2 O, Ni(NO 3 ) 3 ·3H 2 O, Cr(NO 3 ) 3 9H 2 15 g of metal salts such as O were diluted or dissolved with deionized water respectively to form a solution having a component concentration of 0.2 wt % (mass percentage) in terms of metal. Add the prepared transition metal salt solution to the γ-Al by volume excess ratio of 1.5 times 2 o 3 After immersing for 2 hours, filter to remove excess liquid, dry in a blast drying oven at 110°C for 4 hours, then move into a vacuum drying oven and dry at 110°C for 6 hours. In a muffle furnace, it is first calcined at 450°C for 2h, and then calcined at 600°C for 3h. Co...
example 2
[0038] Weigh 3g γ-Al 2 o 3 Grind into powder, Ce(NO 3 ) 3 ·6H 2 O was added to 50% manganese nitrate solution, dissolved with a certain amount of deionized water, and prepared into a solution with a weight concentration of 0.1% in terms of single metal components, wherein the weight ratio of Ce and Mn was 1:1. According to the same steps as above, a solution with a weight ratio of La to Mn of 1:1 or a weight ratio of Ce to La of 1:1 was obtained respectively. Three parts of γ-Al 2 o 3 Add to these three solutions respectively, the liquid volume excess ratio is 1.5, filter after impregnating for 2 hours, dry in a blast drying oven at 110°C for 4 hours, then move into a vacuum drying oven and dry at 110°C for 6 hours. In a muffle furnace, it was fired at 450°C for 2 hours, and then fired at 600°C for 3 hours. Cool naturally to room temperature.
[0039] Get the chloroplatinic acid and the palladium chloride solution that are prepared respectively by 0.25% by metal compon...
example 3
[0041] Weigh 3g TiO 2 (Anatase) is ground into powder particles, and a certain amount of deionized water is used to dilute the 50% manganese nitrate solution to prepare solutions with component weight concentrations of 0.2%, 5.5%, and 16.5% in terms of metal Mn. TiO 2 Add to these 3 solutions respectively, the liquid volume excess ratio is 0.5, filter after impregnation for 2 hours, dry in a blast drying oven at 110°C for 4 hours, then move into a vacuum drying oven and dry at 110°C for 6 hours. Calcined at 650°C for 20h in a muffle furnace. Cool naturally to room temperature.
[0042] Take 3 parts of mixed solutions of chloroplatinic acid and palladium chloride prepared with a weight concentration of 0.25% according to the metal component respectively, the weight ratio of platinum to palladium is 1: 1, and the 3 parts of carriers prepared above are respectively added in equal volumes After dipping into these three parts of Pt-Pd mixed solution for 2 hours, move it into a v...
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