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Soot catalyst, soot catalyst filter and method for forming a soot catalyst filter
Soot catalyst, soot catalyst filter and method for forming a soot catalyst filter
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机译:烟灰催化剂,烟灰催化剂过滤器和形成烟灰催化剂过滤器的方法
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摘要
An improved soot catalyst is comprised of an alkali compound at least partially coated by a ceramic coating comprised of C bonded to a metal, semimetallic element or combination thereof. The improved soot catalyst may be employed in catalyzed Diesel particulate filters. In one method to make a catalyzed Diesel particulate filter, the improved filter is made by contacting a porous ceramic body having an alkali catalyst thereon, coating the alkali catalyst with an organic ceramic precursor, heating the ceramic body to a temperature in an atmosphere sufficient to decompose the organic ceramic precursor to form the soot catalyst on the porous ceramic body without volatilizing substantial amount of the alkali catalyst away.
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