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Graphene catalytic plate capable of efficiently purifying automobile exhaust and preparation method

A technology of automobile exhaust and ene catalytic plate, which is applied in the direction of catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., and can solve the problems of short circulation time of engine exhaust gas, insufficient purification of poisonous gases, and insufficient purification. , to achieve the effect of increasing the surface area, easy process control, and improving catalytic performance

Inactive Publication Date: 2018-02-27
CHENDU NEW KELI CHEM SCI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This technology is based on metal oxidation, supplemented by salt compounds, organic matter, and graphene oxide. The shortcoming of this technology is that the exhaust gas of the automobile passes through the exhaust system quickly, and it is not enough to remove the poisonous gas in the exhaust gas in such a short time. completely purified
However, due to the rapid emission of automobile exhaust, the time for engine exhaust to circulate in the internal combustion engine or exhaust pipe is too short; and the catalyst is often difficult to play a role in such a short period of time, so that the poisonous gas in the exhaust has not passed the preset chemical The reaction is excluded from the air, or the purification is not thorough enough, still causing exhaust pollution

Method used

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  • Graphene catalytic plate capable of efficiently purifying automobile exhaust and preparation method

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Embodiment 1

[0033] A preparation method of a graphene catalytic plate for efficiently purifying automobile exhaust gas, comprising the following steps:

[0034] Step 1: Stir and mix graphene and water according to a volume ratio of 1:3, heat at 100°C, and mechanically stir at a constant speed for 30 minutes to obtain a dispersion;

[0035] Step 2: Add a polyvinyl alcohol aqueous solution with a concentration of 30% to the dispersion in step 1. The volume of the polyvinyl alcohol aqueous solution is 1 / 2 of the volume of the dispersion prepared in step 1, and mix and stir evenly;

[0036] Step 3: Add a mixture of micronized metal oxide cerium oxide and aluminum oxide to the liquid obtained in step 2, and stir well to obtain a mixed slurry of metal oxide, graphene and polyvinyl alcohol; graphene and metal oxide The mass ratio is 1:1;

[0037] Step 4: Add titanium hydride to the mixed slurry prepared in step 3, the amount of titanium hydride is 0.01% of the mass of the slurry, and the slurry i...

Embodiment 2

[0041] A preparation method of a graphene catalytic plate for efficiently purifying automobile exhaust gas, comprising the following steps:

[0042] Step 1: Stir and mix graphene and water according to a volume ratio of 1:3, heat at 100°C, and mechanically stir at a constant speed for 30 minutes to obtain a dispersion;

[0043] Step 2: Add a polyvinyl alcohol aqueous solution with a concentration of 30% to the dispersion in step 1. The volume of the polyvinyl alcohol aqueous solution is 2 / 3 of the volume of the dispersion prepared in step 1, and mix and stir evenly;

[0044] Step 3: Add a mixture of micronized metal oxide alumina, lanthanum oxide and vanadium oxide to the liquid obtained in step 2, and stir well to obtain a mixed slurry of metal oxide, graphene and polyvinyl alcohol; graphene and The mass ratio of metal oxides is 1:2;

[0045] Step 4: Add titanium hydride to the mixed slurry prepared in step 3, the amount of titanium hydride is 0.02% of the mass of the slurry...

Embodiment 3

[0049] A preparation method of a graphene catalytic plate for efficiently purifying automobile exhaust gas, comprising the following steps:

[0050] Step 1: Stir and mix graphene and water according to a volume ratio of 1:3, heat at 100°C, and mechanically stir at a constant speed for 30 minutes to obtain a dispersion;

[0051] Step 2: Add a polyvinyl alcohol aqueous solution with a concentration of 30% to the dispersion in step 1. The volume of the polyvinyl alcohol aqueous solution is 1 / 2 of the volume of the dispersion prepared in step 1, and mix and stir evenly;

[0052] Step 3: Add a mixture of micronized metal oxide silicon dioxide and vanadium oxide at a mass ratio of 5:1 to the liquid obtained in step 2, and stir well to obtain a mixed slurry of metal oxide, graphene and polyvinyl alcohol Material; The mass ratio of graphene and metal oxide is 1:5;

[0053] Step 4: Add titanium hydride to the mixed slurry prepared in step 3, the amount of titanium hydride is 0.04% of ...

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Abstract

The invention belongs to the technical field of automobile exhaust treatment, and particularly relates to a graphene catalytic plate capable of efficiently purifying automobile exhaust and a preparation method. Metal oxide and graphene are prepared into slurry, the slurry is then foamed and shaped into the shape of a plate, forming fine holes, a metal catalyst is sprayed on the surface after sintering, and a heating wire is arranged on the plate. The outstanding advantages are as follows: by connecting the heating wire, graphite heats, the graphite particles, serving as a heating source, are catalyzed by the metal oxide in situ to rapidly promote nitrogen oxide, ammonia and the like to be reduced into nitrogen and water, and thereby the efficiency of automobile exhaust treatment is increased.

Description

technical field [0001] The invention belongs to the technical field of automobile exhaust gas treatment, and in particular relates to a graphene catalytic plate for efficiently purifying automobile exhaust gas and a preparation method thereof. Background technique [0002] With the rapid and high-speed development of our country's economy, the living standards of our people continue to improve, and the number of cars in our country has increased rapidly. Today's social cars have become an indispensable means of transportation. However, with the increase in the number of cars, car exhaust emissions have caused environmental pollution pollution is also becoming more and more serious. In my country's large and medium-sized cities, vehicle exhaust emissions have gradually become the main source of environmental pollution, and the control of vehicle exhaust emissions has also become a major issue in today's social development. Therefore, it is imperative to strengthen the contro...

Claims

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Application Information

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IPC IPC(8): B01D53/94B01D53/58B01D53/56B01J23/63B01J23/648B01J23/68B01J37/02B01J37/08
CPCB01D53/56B01D53/58B01D53/94B01D53/9413B01D53/9454B01D53/9495B01D2256/10B01D2258/012B01J23/002B01J23/63B01J23/6482B01J23/682B01J37/0215B01J37/08
Inventor 陈庆曾军堂
Owner CHENDU NEW KELI CHEM SCI CO LTD
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