Low-cost sheet honeycomb ceramic automobile tail gas purifying material and preparation method thereof

Abstract

The invention discloses a low-cost sheet honeycomb ceramic automobile tail gas purifying material and a preparation method thereof. The low-cost sheet honeycomb ceramic automobile tail gas purifying material is prepared from, by weight, 15-20 parts of rare earth tailings, 20-25 parts of iolite, 1-3 parts of clay, 1-3 parts of bentonite, 5-10 parts of ZrO2 powder, 5-10 parts of CrO2 powder, 10-15 parts of talcum powder, 1-3 parts of polytetrafluoroethylene powder, 3-5 parts of magnesium carbonate, 4-8 parts of sodium carbonate, 5-10 parts of stearic acid, a proper amount of a 1 mol / L HNO3 solution, 50-60 parts of nano-alumina sol, 1-3 parts of 1 mol / L La(NO3)3, 1-2 parts of 1 mol / L Sr(NO3)2, 0.5-1 part of 1 mol / L Co(NO3)2, 2-6 parts of 1 mol / L citric acid and 100-200 parts of deionized water. A honeycomb ceramic carrier is processed to form a sheet, so installation and replacement are convenient, the cost is saved, and full utilization of resources is promoted.

Description

technical field [0001] The invention relates to ceramic materials, in particular to a low-cost sheet-shaped honeycomb ceramic automobile tail gas purification material and a preparation method thereof. technical background [0002] 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. [0003] 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 exp...

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.