Exhaust gas-purifying catalyst
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United States of America Patent
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Jan 2, 2018
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app pub date -
Jan 20, 2017
filing date -
Jan 21, 2016
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Abstract
An exhaust gas-purifying catalyst includes a support and a catalytic metal as one or more precious metals supported by the support. The support includes a composite oxide having a composition represented by a general formula ABαCβO3, wherein A represents one or more elements selected from the group consisting of lanthanum, neodymium, and yttrium, B represents iron or a combination of iron and aluminum, C represents one or more elements selected from the group consisting of iridium, ruthenium, tantalum, niobium, molybdenum, and tungsten, α and β each represents a numerical value within a range of more than 0 and less than 1, and α and β satisfy relational formulae of β>α and α+β≦1.
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