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A platform for research: civil engineering, architecture and urbanism
Belonging to the technical field of ceramics, the invention specifically relates to a cordierite honeycomb ceramic for a diesel vehicle exhaust catalytic purifier. The cordierite honeycomb ceramic is composed of inorganic raw materials, hydroxypropyl methyl cellulose and magnesium stearate. The inorganic raw materials comprises, by weight, 37-42 parts of talcum powder, 16-37 parts of pyrophyllite powder, 0-24 parts of kaolinite powder, and 16-32 parts of aluminum hydroxide powder. The adding amount of the hydroxypropyl methyl cellulose accounts for 4%-7% of the mass of the inorganic raw materials, and the adding amount of the magnesium stearate accounts for 2% of the mass of the inorganic raw materials. According to the invention, pyrophyllite is adopted as one of the main raw materials of cordierite honeycomb ceramic, and the prepared cordierite honeycomb ceramic has a low thermal expansion coefficient of smaller than or equal to 1.0*10<-6>/DEG C (25-800DEG C), and is low in cost, can be used as the carrier of a catalyst in a diesel vehicle exhaust catalytic purification device, and is a choice of cordierite honeycomb ceramic carrier production.
Belonging to the technical field of ceramics, the invention specifically relates to a cordierite honeycomb ceramic for a diesel vehicle exhaust catalytic purifier. The cordierite honeycomb ceramic is composed of inorganic raw materials, hydroxypropyl methyl cellulose and magnesium stearate. The inorganic raw materials comprises, by weight, 37-42 parts of talcum powder, 16-37 parts of pyrophyllite powder, 0-24 parts of kaolinite powder, and 16-32 parts of aluminum hydroxide powder. The adding amount of the hydroxypropyl methyl cellulose accounts for 4%-7% of the mass of the inorganic raw materials, and the adding amount of the magnesium stearate accounts for 2% of the mass of the inorganic raw materials. According to the invention, pyrophyllite is adopted as one of the main raw materials of cordierite honeycomb ceramic, and the prepared cordierite honeycomb ceramic has a low thermal expansion coefficient of smaller than or equal to 1.0*10<-6>/DEG C (25-800DEG C), and is low in cost, can be used as the carrier of a catalyst in a diesel vehicle exhaust catalytic purification device, and is a choice of cordierite honeycomb ceramic carrier production.
Cordierite honeycomb ceramic for diesel vehicle exhaust catalytic purifier and preparation method thereof
2015-11-04
Patent
Electronic Resource
English
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