Wet oxidation catalyst
A wet oxidation and catalyst technology, applied in the direction of physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, heterogeneous catalyst chemical elements, etc., can solve the problem of low COD removal efficiency and reduce Effect of organic matter content, good technical effect
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Embodiment 1
[0051] 1. Catalyst preparation
[0052] In terms of weight ratio, ZrO 2 :CeO 2: Pt is 98:1.6:0.4 to prepare catalyst W-01.
[0053] Preparation method of carrier:
[0054] (1) at room temperature will be equivalent to 98 parts of ZrO 2 ZrOCl 2 , equivalent to 1.6 parts CeO 2 Ce(NO 3 ) 3 Dissolved in 800 parts of water to obtain solution A;
[0055] (2) Add ammonia water to solution A under strong stirring until pH = 8.1 to obtain a white slurry;
[0056] (3) Spray-dry the slurry at 240° C. to obtain white fine powder;
[0057] (4) The resulting fine powder is kneaded, extruded, and calcined at 700°C for 2 hours to obtain Ce-doped ZrO 2 carrier.
[0058] The preparation method of catalyst is:
[0059] Precious metal loading: 99.6 parts of the above-mentioned shaped support was impregnated in hydrated H containing 0.4 parts of Pt at room temperature 2 PtCl 6 100 parts of aqueous solution overnight, dried at 80°C, and then reduced for 4 hours at 300°C under a hydrog...
Embodiment 2
[0063] 1. Catalyst preparation
[0064] In terms of weight ratio, ZrO 2 :BaO:Pt is 98:1.6:0.4 to prepare catalyst W-02.
[0065] Preparation method of carrier:
[0066] (1) at room temperature will be equivalent to 98 parts of ZrO 2 ZrOCl 2 , equivalent to 1.6 parts of BaO in Ba(NO 3 ) 2 Dissolved in 800 parts of water to obtain solution A;
[0067] (2) Add ammonia water to solution A under strong stirring until pH = 8.1 to obtain a white slurry;
[0068] (3) Spray-dry the slurry at 240° C. to obtain white fine powder;
[0069] (4) The resulting fine powder is kneaded, extruded, and calcined at 700°C for 2 hours to obtain Ba-doped ZrO 2 carrier.
[0070] The preparation method of catalyst is:
[0071] Supporting precious metals: 99.6 parts of shaped supports were impregnated in hydrated H containing 0.4 parts of Pt at room temperature 2 PtCl 6 100 parts of the aqueous solution overnight, dried at 80°C, and then reduced for 4 hours under a hydrogen atmosphere (hydro...
Embodiment 3
[0075] 1. Catalyst preparation
[0076] In terms of weight ratio, ZrO 2 :CeO 2 :BaO:Pt is 98:0.8:0.8:0.4 to prepare catalyst W-03.
[0077] Preparation method of carrier:
[0078] (1) at room temperature will be equivalent to 98 parts of ZrO 2 ZrOCl 2 , equivalent to 0.8 parts CeO 2 Ce(NO 3 ) 3 and Ba(NO 3 ) 2 Dissolved in 800 parts of water to obtain solution A;
[0079] (2) Add ammonia water to solution A under strong stirring until pH = 8.1 to obtain a white slurry;
[0080] (3) Spray-dry the slurry at 240° C. to obtain white fine powder;
[0081] (4) The resulting fine powder is kneaded, extruded, and calcined at 700°C for 2 hours to obtain Ce and Ba-doped ZrO 2 carrier.
[0082] The preparation method of catalyst is:
[0083] Supporting precious metals: 99.6 parts of shaped supports were impregnated in hydrated H containing 0.4 parts of Pt at room temperature 2 PtCl 6 100 parts of the aqueous solution overnight, dried at 80°C, and then reduced for 4 hours ...
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