Green and environment-friendly catalyst for automobile exhaust treatment and preparation method of catalyst

A green environmental protection, automobile exhaust technology, applied in catalyst activation/preparation, physical/chemical process catalyst, gas treatment, etc., can solve the problems of high price, limited application, etc., and achieve the effect of high speed, long service life and uniform dispersion

Inactive Publication Date: 2018-05-18
CHENGDU YUYA TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the high price limits the application of such catalysts

Method used

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  • Green and environment-friendly catalyst for automobile exhaust treatment and preparation method of catalyst

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Experimental program
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Effect test

Embodiment 1

[0026] A preparation method of an environmentally friendly catalyst for automobile exhaust treatment, comprising the steps of:

[0027] 1) Dichloropropanol surface modified nano-titanium dioxide: ultrasonically disperse 30 g of nano-titanium dioxide in 100 g of ether for 15 minutes, then add 20 g of dichloropropanol therein, stir at room temperature for 1 hour, and then obtain a solid product by centrifugation, Then place it in a vacuum drying oven at 60°C for 20 hours;

[0028] 2) Titanium dioxide surface-modified by quaternary ammonium salt: disperse 30 g of nano-titanium dioxide surface-modified dichloropropanol prepared in step 1) in 100 g of ether, and then add N-tris(hydroxymethyl)methyl- 10g of 2-aminoethanesulfonic acid and 10g of perfluorotributylamine were stirred at 40°C for 5 hours, then the solid product was obtained by centrifugation, and dried in a vacuum oven at 60°C for 15 hours;

[0029] 3) Graphene oxide doping: Disperse 10 g of quaternary ammonium salt sur...

Embodiment 2

[0033] A preparation method of an environmentally friendly catalyst for automobile exhaust treatment, comprising the steps of:

[0034] 1) Dichloropropanol surface modified nano-titanium dioxide: ultrasonically disperse 40 g of nano-titanium dioxide in 110 g of acetonitrile for 17 minutes, then add 22 g of dichloropropanol therein, stir at room temperature for 1.2 hours, and then obtain a solid product by centrifugation, Then place it in a vacuum oven at 65°C for 15 hours;

[0035] 2) Titanium dioxide surface-modified by quaternary ammonium salt: 35 g of nano-titanium dioxide surface-modified by dichloropropanol prepared in step 1) are dispersed in 120 g of ether, and then N-tris(hydroxymethyl)methyl- 14g of 2-aminoethanesulfonic acid and 13g of perfluorotributylamine were stirred at 43°C for 6 hours, then the solid product was obtained by centrifugation, and dried in a vacuum oven at 65°C for 18 hours;

[0036] 3) Graphene oxide doping: Disperse 15 g of titanium dioxide and ...

Embodiment 3

[0040] A preparation method of an environmentally friendly catalyst for automobile exhaust treatment, comprising the steps of:

[0041]1) Dichloropropanol surface modified nano-titanium dioxide: ultrasonically disperse 45 g of nano-titanium dioxide in 135 g of ethyl acetate for 18 minutes, then add 25 g of dichloropropanol therein, stir at room temperature for 1.5 hours, and then obtain a solid by centrifugation The product was dried in a vacuum oven at 72°C for 16 hours;

[0042] 2) Titanium dioxide surface-modified by quaternary ammonium salt: 40 g of nano-titanium dioxide surface-modified by dichloropropanol prepared in step 1) is dispersed in 140 g of ether, and then N-tris(hydroxymethyl)methyl- 18g of 2-aminoethanesulfonic acid and 10g of perfluorotributylamine were stirred at 46°C for 7 hours, then the solid product was obtained by centrifugation, and dried in a vacuum oven at 74°C for 19 hours;

[0043] 3) Graphene oxide doping: Disperse 17 g of titanium dioxide and 27...

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Abstract

The invention discloses a preparation method of a green and environment-friendly catalyst for automobile exhaust treatment. The method comprises the steps of surface modification of nano titanium dioxide with dichloropropanol, surface modification of titanium dioxide with quanternary ammonium salt, doping of graphene oxide, ion exchange with a tetraammineplatinum dihydroxide aqueous solution and the like. The invention also discloses the green and environment-friendly catalyst prepared with the preparation method and used for automobile exhaust treatment. The green and environment-friendly catalyst for automobile exhaust treatment is high in nitric oxide removal efficiency and speed, long in service life, green, free of secondary pollution and low in cost.

Description

technical field [0001] The invention relates to the technical field of automobile tail gas treatment, in particular to an environmentally friendly catalyst for removing automobile tail gas and a preparation method thereof. Background technique [0002] In recent years, with the development of the economy and the deepening of people's understanding of improving their own quality of life, the number of cars is increasing. While these cars bring convenience to people's lives, they also inevitably bring about environmental pollution. People also pay a price for their health. One of the main pollutants of automobile exhaust is nitrogen oxides. As a primary pollutant, nitrogen oxides will cause harm to human health. It can irritate people's eyes, nose, throat and lungs, and cause respiratory diseases; the second Pollution can produce photochemical smog, acid rain, greenhouse effect and ozone layer hole effect. Therefore, how to effectively remove nitrogen oxides in automobile ex...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/38B01J21/06B01J21/18B01J31/02B01J37/04B01J37/30B01D53/94B01D53/56
CPCB01D53/9413B01D2257/40B01D2258/01B01J21/063B01J21/18B01J31/0225B01J31/0229B01J31/38B01J35/0006B01J37/04B01J37/30
Inventor 向红先
Owner CHENGDU YUYA TECH
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