Hydrogen-producing catalyst and exhaust gas purifying catalyst using same
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United States of America Patent
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Sep 20, 2022
Grant Date -
Oct 22, 2020
app pub date -
Dec 13, 2018
filing date -
Dec 28, 2017
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Abstract
An object of the present invention is to provide means for improving the hydrogen generation properties of a hydrogen-producing catalyst. A hydrogen-producing catalyst according to one aspect of the present invention comprises Rh and a composite containing Al, Ce, and Zr. When a ratio of the number of Al atoms to the number of Ce atoms (Al/Ce) in the composite measured by X-ray fluorescence (XRF) analysis is R1 and a ratio of the number of Al atoms to the number of Ce atoms (Al/Ce) in the composite measured by an X-ray photoelectron spectroscopy (XPS) method is R2, a value of R2/R1 is greater than 2.25 and less than 5.92.
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