Flaky cellular ceramic not easy to fall off and preparation method thereof

Abstract

The invention discloses a flaky cellular ceramic not easy to fall off and a preparation method thereof. The flaky cellular ceramic is prepared from 3-5 parts by weight of limestone, 40-50 parts by weight of iolite, 3-5 parts by weight of phytic acid, 1-3 parts by weight of clay, 5-10 parts by weight of ZrO2 powder, 5-10 parts by weight of CrO2 powder, 10-15 parts by weight of powdered steatile, 3-5 parts by weight of magnesium carbonate, 4-8 parts by weight of sodium carbonate, 1-3 parts by weight of iron powder, 1-3 parts by weight of stearic acid, a proper amount of 1 mol / L of a HNO3 solution, 50-60 parts by weight of nanometer alumina sol, 1-3 parts by weight of 1mol / L of La(NO3)3, 1-2 parts by weight of 1 mol / L of Sr(NO3)2, 0.5-1 part by weight of 1 mol / L of Co(NO3)2, 2-6 parts by weight of 1 mol / L of citric acid and 100-200 parts by weight of deionized water. The flaky cellular ceramic has the advantages of high compressive strength, high temperature resistance, good chemical stability and good corrosion resistance.

Description

technical field [0001] The invention relates to ceramic materials, in particular to a sheet-shaped honeycomb ceramic which is not easy to fall off and a preparation method thereof. [0002] technical background [0003] Motor vehicle pollution has become an important source of air pollution in my country and an important cause of haze and photochemical smog pollution. Vehicle exhaust is mainly nitrogen oxides (NO x ), hydrocarbons (HC), carbon monoxide (C0), particulate matter, etc., have become the main air pollutants. Therefore, the most important thing to solve the air pollution problem is to solve the problem of automobile exhaust pollution. [0004] The automobile exhaust purifier is mainly composed of three parts: the shell, the carrier and the catalyst, among which the selection of the catalyst is very important. Three-way catalyst refers to the ability to remove NO at the same time x , HC, CO these three main pollutants catalysts, a large number of experimental stu...

AI Technical Summary

Problems solved by technology

Zhu Jie used cordierite honeycomb ceramics as the carrier in his master's thesis "Study on the Catalytic Performance of Cordierite Honeycomb Ceramics Loaded La-Sr-Co-O on Automobile Exhaust Gas", La-Sr-Co-O perovskite composite oxidation As the active component of the catalyst, a monolithic automobile exhaust catalyst has been prepared, but the heat resistance of the prepared ceramic carrier is not high enough, and once the monolithic catalyst is damaged, it needs to be replaced as a whole, which wastes resources and increases the cost of use.