发明授权
- 专利标题： High-temperature denitration catalysts and processes for preparing same
- 专利标题（中）： 高温脱硝催化剂及其制备方法
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申请号： US10509160申请日： 2003-03-27
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公开(公告)号： US07396518B2公开(公告)日： 2008-07-08
- 发明人: Masayoshi Ichiki , Kazuhiro Yano , Susumu Hikazutani
- 申请人： Masayoshi Ichiki , Kazuhiro Yano , Susumu Hikazutani
- 申请人地址： JP Osaka
- 专利权人： Hitachi Zosen Corporation
- 当前专利权人： Hitachi Zosen Corporation
- 当前专利权人地址： JP Osaka
- 代理机构： Cheng Law Group PLLC
- 优先权： JP2002-090505 20020328; JP2002-136522 20020513
- 国际申请： PCT/JP03/03783 WO 20030327
- 国际公布： WO03/082463 WO 20031009
- 主分类号： B01D53/56
- IPC分类号： B01D53/56 ; B01J21/06
摘要：
The present invention provides a method of high-temperature denitration characterized in that NOx in an exhaust gas is reduced at 450° to 800° C. using ammonia as a reducing agent in the presence of a catalyst which comprises zirconium oxide and SO3 or SO42− and has solid acid strength (Ho) of −11.93 or lower. The present invention also provides a method of high temperature denitration characterized in that NOx in an exhaust gas is reduced at 450° to 800° C. using ammonia as a reducing agent in the presence of a catalyst wherein at least one of tungsten oxide, molybdenum oxide and boron oxide is supported on a carrier comprising zirconium oxide and SO3 or SO42− and having solid acid strength (Ho) of −11.93 or lower.
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