Catalyst based on ferrierite/iron for catalytic reduction of nitrous oxide
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United States of America Patent
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Jul 3, 2007
Grant Date -
Sep 30, 2004
app pub date -
Dec 1, 2003
filing date -
Dec 31, 1997
priority date (Note) -
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Abstract
A catalyst for reducing the nitrous oxide content in gas, which operates at relatively low temperatures, the activity of which is relatively insensitive to the presence of water vapor and which is highly resistant to hydrothermal degradation, is prepared from ferrierite exchanged with iron. Application to the treatment of gases with a low N.sub.2O content, such as gases resulting from plants for the manufacture of nitric acid, and of gases with a high N.sub.2O content, which are emitted during oxidations of organic compounds by nitric acid.
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