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CATALYST PARTICLES TYPE Kernel / SHELL AND METHOD FOR PRODUCING
CATALYST PARTICLES TYPE Kernel / SHELL AND METHOD FOR PRODUCING
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机译:催化剂颗粒类型的核/壳及其生产方法
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摘要
The invention provides an automotive catalyst composite effective for abating carbon monoxide, hydrocarbons, and NOx emission in an automotive exhaust gas stream, which includes a catalytic material on a carrier, the catalytic material including a plurality of core-shell support particles comprising a core and a shell surrounding the core, the core including a plurality of particles having a primary particle size distribution d90 of up to about 5 μm, wherein the core particles comprise particles of one or more metal oxides, the shell including nanoparticles of one or more metal oxides, wherein the nanoparticles have a primary particle size distribution d90 in the range of about 5 nm to about 1000 nm (1 μm), and one or more platinum group metals (PGMs) on the core-shell support. The invention also provides an exhaust gas treatment system and related method of treating exhaust gas utilizing the catalyst composite.
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