SURFACE STABILIZED SOURCES OF ISOCYANIC ACID

摘要

Composition, method and apparatus for providing a surface stabilized source of HNCO by adsorbing gaseous or liquid HNCO on the surface of a substrate (12). 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 (10), such as urea. The substrate can be heated to release HNCO (14). The present invention is especially useful as a source of HNCO for reducing NOx in gas streams.