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    • 5. 发明授权
    • Discharge gas treatment catalyst
    • 放电气处理催化剂
    • US07863216B2
    • 2011-01-04
    • US11231861
    • 2005-09-22
    • Yoshiaki ObayashiToshiyuki OnishiKozo Iida
    • Yoshiaki ObayashiToshiyuki OnishiKozo Iida
    • B01J23/00B01J21/00B01J20/00
    • B01D53/8628B01D53/79B01D53/8609
    • The invention provides a discharge gas treatment catalyst which can effectively decreases NOx and SO3 contained in a discharge gas. The discharge gas treatment catalyst, for removing nitrogen oxide and sulfur trioxide from a discharge gas, includes a carrier which is formed of titania-tungsten oxide and which carries ruthenium, and a titania-tungsten oxide-based NOx removal catalyst serving as a substrate which is coated with the carrier. When a discharge gas to which ammonia has been added and which contains SO3 and NOx is brought into contact with the catalyst, decomposition of ammonia is suppressed by ruthenium, and reduction of SO3 and NOx contained in the discharge gas is promoted, whereby SO3 concentration and NOx concentration can be further decreased.
    • 本发明提供一种放电气体处理催化剂,能够有效地减少放电气体中所含的NOx和SO 3。 用于从放电气体中除去氮氧化物和三氧化硫的放电气体处理催化剂包括由二氧化钛 - 氧化钨形成并载有钌的载体和用作基板的二氧化钛 - 氧化钨基NOx去除催化剂 涂有载体。 当添加有氨并且含有SO 3和NO x的放电气体与催化剂接触时,由钌抑制氨的分解,促进放电气体中所含的SO 3和NO x的还原,由此SO 3浓度和 NOx浓度可以进一步降低。