Chabazite-type zeolite and method for producing same, copper loaded low-silica zeolite and nox reductive removal catalyst containing the zeolite, and method of nox reductive removal using this catalyst
AssigneeTosoh Corporation
InventorsKo Ariga, Hidekazu Aoyama, Yuuki Ito
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Abstract
The chabazite-type zeolite of the present invention has a SiO2/Al2O3 molar ratio of less than 15, and an average particle size from 1.0 μm to 8.0 μm. The chabazite-type zeolite of the present invention has excellent durability and heat resistance, and the copper-loaded chabazite-type zeolite has an improved NOx reduction rate at low temperatures compared to conventional copper-loaded chabazite-type zeolite.
Claims15
A chabazite-type zeolite, wherein said zeolite has a SiO2/Al2O3 molar ratio of less than 15 and an average particle size of from 1.0 μm to 8.0 μm.
A chabazite-type zeolite, wherein said zeolite has a SiO2/Al2O3 molar ratio of less than 15, an average particle size of from 1.0 μm to 8.0 μm and is loaded with copper.
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