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Catalyst for propane catalytic combustion elimination as well as preparation method and application of catalyst

A catalytic combustion and catalyst technology, applied in the direction of physical/chemical process catalysts, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problems of easy carbon deposition and low activity of catalysts, and achieve high price Low cost, high activity, no by-products and few effects

Inactive Publication Date: 2015-03-04
SHANGHAI NAT ENG RES CENT FORNANOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, nickel oxide, as a typical P-type, shows high activity for the catalytic complete oxidation of hydrocarbons, but compared with noble metal catalysts, the activity is relatively low and the surface of the catalyst is easy to deposit carbon.

Method used

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  • Catalyst for propane catalytic combustion elimination as well as preparation method and application of catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Dissolve commercially available 8.48g sodium carbonate in 40ml water to form a 2mol / L sodium carbonate solution as solution A; get 5ml30% hydrogen peroxide as solution B; dissolve commercially available 5.06g hexahydrate nickel nitrate in 100ml (add 11g95% ethanol) in water to form a 0.2mol / L nickel nitrate solution as solution C; in a water bath at 45°C with stirring, add solutions A and B to solution C drop by drop at the same time to form a precipitate. Stand in the air for 12 hours; filter to get the filter cake, wash the filter cake to about PH = 7, dry in an oven at 110°C for 12 hours, take it out and grind it into powder, then move it to a muffle furnace for roasting. The calcination process is as follows: start heating at 50°C, program temperature rise at a heating rate of 1°C / min, raise the temperature to 350°C, and keep at 350°C for 4 hours to obtain pure nickel oxide catalyst NiOx.

Embodiment 2

[0022] Dissolve commercially available 8.48g sodium carbonate in 40ml water to form a 2mol / L sodium carbonate solution as solution A; get 5ml30% hydrogen peroxide as solution B; commercially available 4.71g hexahydrate nickel nitrate and 0.95g 50% Dissolve the manganese nitrate solution in 40ml of water to form a mixed solution of 0.2mol / L nickel nitrate and manganese nitrate, as solution C; in a water bath at 45°C, under the condition of stirring, add the A and B solutions drop by drop to the C solution at the same time , to form a precipitate, and let it stand in the air at room temperature for 12 hours; filter the filter cake, wash the filter cake to about PH=7, dry it in an oven at 110°C for 12 hours, take it out and grind it into powder, and then transfer it to a muffle furnace for roasting. The calcination process is as follows: start heating at 50°C, program temperature rise at a heating rate of 1°C / min, raise the temperature to 350°C, and keep at 350°C for 4 hours to ob...

Embodiment 3

[0024] Dissolve commercially available 8.48g sodium carbonate in 40ml water to form a 2mol / L sodium carbonate solution as solution A; get 5ml30% hydrogen peroxide as solution B; commercially available 4.65g hexahydrate nickel nitrate and 1.0g tetrahydrate acetic acid Dissolve cobalt in 40ml of water to form a mixed solution of 0.2mol / L nickel nitrate and cobalt acetate, which is used as solution C; in a water bath at 45°C, under stirring conditions, add solutions A and B dropwise to solution C at the same time to form Precipitation, standing in the air at room temperature for 12 hours; filtering to get the filter cake, washing the filter cake to about PH = 7, drying in an oven at 110°C for 12 hours, taking it out and grinding it into powder, and then moving it to a muffle furnace for roasting. The calcination process is as follows: start heating at 50°C, program temperature increase at a heating rate of 1°C / min, raise the temperature to 350°C, and keep at 350°C for 4 hours to o...

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Abstract

The invention provides a preparation method of a catalyst for propane catalytic combustion elimination. The preparation method comprises the following steps: doping metal species into nickel oxide by adopting a coprecipitation method, dropwise adding a 2mol / L sodium carbonate or potassium carbonate solution into a 0.2mol / L precursor mixed solution to form a precipitate, wherein a solvent of the precursor mixed solution is 10wt% alcohol solution, wherein the volume ratio of the sodium carbonate or potassium carbonate solution to the precursor mixed solution is 2:5; dropwise adding 5-8ml of 30% hydrogen peroxide while dropwise adding a sodium carbonate or potassium carbonate precipitator, wherein the volume ratio of the added hydrogen peroxide to the precursor mixed solution is 1:20; and performing suction filtration on the precipitator, drying at 50-100 DEG C, and roasting at 250-450 DEG C roasting to obtain catalysts doped by different metals for propane catalytic combustion elimination. The catalyst is prepared by adopting the coprecipitation method, and is low in price; the preparation method is simple.

Description

technical field [0001] The invention relates to the technical field of catalytic combustion environmental protection, in particular to a nickel-based catalyst used for propane low-temperature catalytic combustion elimination and a preparation method thereof, and provides a method for complete catalytic combustion elimination of volatile organic pollutants in the environment Methods. Background technique [0002] Environmental pollution, especially the increasing air pollution, is one of the most concerned issues in the 21st century. As the number of motor vehicles increases year by year, motor vehicle exhaust (PM (particles, soot)), CO, NOx and HC (hydrocarbons) have become one of the main pollution sources of urban air. At the same time, the national standards for vehicle exhaust emissions are gradually increasing. [0003] Gradually increasing emission standards put forward higher requirements for automobile exhaust purification catalysts. HC (hydrocarbons) is one of th...

Claims

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Application Information

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IPC IPC(8): B01J23/755B01J23/889B01D53/86B01D53/72
Inventor 何丹农蔡婷赵昆峰高振源杨玲袁静爨谦
Owner SHANGHAI NAT ENG RES CENT FORNANOTECH
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