发明授权
US06521559B1 Superior pillared clay catalysts for selective catalytic reduction of nitrogen oxides for power plant emission control 失效
用于选择性催化还原氮氧化物用于发电厂排放控制的优质柱状粘土催化剂

  • 专利标题: Superior pillared clay catalysts for selective catalytic reduction of nitrogen oxides for power plant emission control
  • 专利标题(中): 用于选择性催化还原氮氧化物用于发电厂排放控制的优质柱状粘土催化剂
  • 申请号: US09580382
    申请日: 2000-05-26
  • 公开(公告)号: US06521559B1
    公开(公告)日: 2003-02-18
  • 发明人: Ruiqiang LongRalph T. YangKent D. Zammit
  • 申请人: Ruiqiang LongRalph T. YangKent D. Zammit
  • 主分类号: B01J2116
  • IPC分类号: B01J2116
Superior pillared clay catalysts for selective catalytic reduction of nitrogen oxides for power plant emission control
摘要:
The present invention provides a catalyst for selective catalytic reduction of nitrogen oxide compounds with ammonia comprising a composition of one or more pillared interlayered clays, one or more metal ions exchanged with the pillared interlayered clays, and one or more promoter ions exchanged with the pillared interlayered clays. Specifically, the pillared interlayered clay (PILC) catalysts of the present invention include Fe3+, Cr3+, Mn2+, Co2+, Cu2+, and Ni2+ exchanged Al2O3-PILC, TiO2-PILC, ZrO2-PILC or SiO2-PILC catalysts. The promoters include Ce, La, Pr, Th and Nd. These pillared clay catalysts of the present invention show remarkable activity for the SCR reaction.
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