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    • 2. 发明授权
    • Harmful gas removing agent
    • 有害气体去除剂
    • US6066590A
    • 2000-05-23
    • US43581
    • 1998-03-26
    • Yuji HoriiToshinori InoueTakeshi YamashitaHidetaka ShibanoYoshiyuki TomiyamaKimihiko Yoshizaki
    • Yuji HoriiToshinori InoueTakeshi YamashitaHidetaka ShibanoYoshiyuki TomiyamaKimihiko Yoshizaki
    • B01J20/06B01J23/00B01J8/00B01J8/02C01G3/02C01G45/02
    • B01J20/06
    • The present invention is directed to a harmful gas removing agent used for removing harmful gas such as CO, NO.sub.x, and O.sub.3 from exhaust gases ventilated from automobile tunnels and underground parking, thereby preventing air pollution. The harmful gas removing agent, solving the problems of the conventional adsorbents and catalysts, is capable of efficiently removing NO.sub.x with no need of pre-treatment of adding O.sub.3 to the exhaust gas being treated, as well as being capable of satisfactorily removing CO and O.sub.3 from exhaust gases even at high humidity, and its removing activity lasts for a long time. Furthermore, the harmful gas removing agent can be regenerated by being exposed to hot air at relatively low temperature, thereby being repeatedly used, and is hard to be poisoned by SO.sub.x contained in the exhaust gas. The harmful gas removing agent includes, as effective components, a manganese oxide having a specific average manganese oxidation number, a manganese-copper compound oxide or a manganese-iron compound oxide, and a ruthenium compound, or in addition thereto an alkali metal compound.
    • PCT No.PCT / JP96 / 02792 Sec。 371日期:1998年3月26日 102(e)1998年3月26日PCT PCT 1996年9月26日PCT公布。 公开号WO97 / 11779 日期1997年4月3日本发明涉及一种用于从汽车隧道和地下停车场通风的废气中除去CO,NOx和O3等有害气体的有害气体去除剂,从而防止空气污染。 解决常规吸附剂和催化剂的问题的有害气体去除剂能够有效地除去NOx,而不需要对被处理废气中添加O 3进行预处理,并且能够令人满意地除去CO和O 3 即使在高湿度的废气中,其除去活性持续很长时间。 此外,有害气体去除剂可以通过在相对低的温度下暴露于热空气中而被再生,从而被重复使用,并且难以被废气中所含的SO x所毒化。 作为有效成分,有害气体除去剂包含具有特定的平均锰氧化数的锰氧化物,锰 - 铜复合氧化物或锰 - 铁复合氧化物,以及钌化合物,或者除了碱金属化合物外。