Process for oxidation of ammonia
    38.
    发明授权
    Process for oxidation of ammonia 失效
    氨氧化工艺

    公开(公告)号:US3931391A

    公开(公告)日:1976-01-06

    申请号:US468988

    申请日:1974-05-10

    摘要: Catalysts suitable for the oxidation of ammonia to nitrogen oxides which are suitable to produce nitric acid are prepared by doping cobalt oxide, preferably Co.sub.3 O.sub.4 with 0.1-10 atoms %, preferably 0.5-3 atom % of lithium. In a given case, there is added a mold assist agent to form tablets, spheres, extruded pressed strands or honeycombs. The product is calcined in air or an oxygen stream at 300.degree.-700.degree.C, preferably 400.degree.-600.degree.C and subsequently tempered at 700.degree.-900.degree.C in a reactive gas mixture of air and 8-10 vol. % ammonia to increase the form stability.

    摘要翻译: 通过掺杂氧化钴,优选具有0.1-10原子%,优选0.5-3原子%的锂的Co 3 O 4,制备适于氧化氨至适于生产硝酸的氮氧化物的催化剂。 在给定的情况下,加入模具助剂以形成片剂,球体,挤出的挤压的丝束或蜂窝。 产物在空气或氧气流中在300〜700℃,优选400〜-600℃下煅烧,随后在空气和8〜10体积的反应性气体混合物中于700-900℃回火。 %氨增加形式稳定性。