Surface stabilized sources of isocyanic acid
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United States of America Patent
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Aug 30, 1994
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N/A
app pub date -
Dec 11, 1990
filing date -
Sep 14, 1990
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Expired
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Abstract
Composition, method and apparatus for providing a surface stabilized source of HNCO by adsorbing gaseous or liquid HNCO on the surface of a substrate. HNCO stabilized in this manner is not reactive and is stable at or above ambient temperature. The HNCO can be provided by heating a reactant source material, such as urea. The substrate can be heated to release HNCO. The present invention is especially useful as a source of HNCO for reducing NO.sub.x in gas streams.
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