| 摘要 |
<p>PURPOSE:To conveniently and highly efficiently denitrate an NOx-contg. gas by providing a treating vessel through which the gas is passed and arranging a zeolite 5 with the layer of an azide compd. formed on its surface in the vessel. CONSTITUTION:A treating vessel 1 through which an NOx-contg. gas is passed is provided, and a zeolite 5 with the layer of an azide compd. formed on its surface is arranged in the vessel 1 to constitute the denitrator. In this case, a special synthetic zeolite is not used, sodium azide is deposited on the zeolite 5, and NOx are removed with the zeolite 5. Since a sodium azide crystal is deposited on the zeolite 5 surface, the sodium azide carrying zeolite 5 having a uniform sodium azide layer is easily formed without using an adhesive. Furthermore, as the uniform crystal layer is obtained in this way, NOx are effectively removed, the deposition amt. is increased, and the reactivity is maintained for a long time.</p> |
