A kind of preparation method of palladium-doped cerium-zirconium composite oxide
A composite oxide, cerium-zirconium technology, applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, chemical/physical processes, etc., can solve the problem of low oxygen storage capacity of cerium-zirconium solid solution Low, small specific surface area, etc.
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Embodiment 1
[0011] A preparation method of palladium-doped cerium-zirconium composite oxide, comprising the following steps: dissolving cerium acetate and zirconium acetate in deionized water, stirring evenly to obtain a first mixed solution; adding OP-10, P123 and n-butanol dropwise respectively In the solvent toluene, the mass ratio of OP-10, P123 and n-butanol is 5:2:10, and the second mixed liquid II is obtained after stirring evenly; the first mixed liquid and the second mixed liquid are mixed, and the mixed emulsion is obtained by high-speed stirring , add 2wt% of palladium acetate dropwise into the mixed emulsion, stir evenly, prepare 20wt% ammonia water as a precipitant, then mix the mixed emulsion with 20wt% ammonia water precipitant, stir at high speed for 2-3 hours, and then stir at 40-50 Stand still at ℃ for 12-24 hours to obtain a cloudy liquid; the cloudy liquid is separated by high-speed centrifugation and suction-filtered, and the obtained solid phase material is dried at 1...
Embodiment 2
[0013] A preparation method of palladium-doped cerium-zirconium composite oxide, comprising the following steps: dissolving cerium acetate and zirconium acetate in deionized water, stirring evenly to obtain a first mixed solution; adding OP-10, P123 and n-butanol dropwise respectively In the solvent toluene, the mass ratio of OP-10, P123 and n-butanol is 5-6:3:10-15, and the second mixed liquid II is obtained after stirring evenly; the first mixed liquid and the second mixed liquid are mixed at high speed Stir to obtain a mixed emulsion, drop 2wt% palladium acetate into the mixed emulsion, stir evenly, prepare 20wt% ammonia water as a precipitant, then mix the mixed emulsion with 20wt% ammonia water precipitant, stir at a high speed for 2-3 hours, then Stand still at 40-50°C for 12-24 hours to obtain a turbid liquid; the turbid liquid is separated by high-speed centrifugation and suction filtered, and the obtained solid phase material is dried at 100-120°C, and the result after...
Embodiment 3
[0015] A preparation method of palladium-doped cerium-zirconium composite oxide, comprising the following steps: dissolving cerium acetate and zirconium acetate in deionized water, stirring evenly to obtain a first mixed solution; adding OP-10, P123 and n-butanol dropwise respectively In the solvent toluene, the mass ratio of OP-10, P123 and n-butanol is 5-6:2-3:11, and the second mixed liquid II is obtained after stirring evenly; the first mixed liquid and the second mixed liquid are mixed at high speed Stir to obtain a mixed emulsion, drop 2wt% palladium acetate into the mixed emulsion, stir evenly, prepare 20wt% ammonia water as a precipitant, then mix the mixed emulsion with 20wt% ammonia water precipitant, stir at a high speed for 2-3 hours, then Stand still at 40-50°C for 12-24 hours to obtain a turbid liquid; the turbid liquid is separated by high-speed centrifugation and suction filtered, and the obtained solid phase material is dried at 100-120°C, and the result after ...
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