Close coupled catalyst

Close coupled catalyst

  • CN 1,799,689 B
  • Filed: 01/13/2006
  • Issued: 11/05/2014
  • Est. Priority Date: 01/13/2006
  • Status: Active Grant
First Claim
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1. a stable close coupled catalyst, by the Al of jljl phase not 2o 3carrier:

  • γ

    -Al 2o 3, θ

    -Al 2o 3, δ

    -Al 2o 3, γ

    -Al that La is stable 2o 3, θ

    -Al that La is stable 2o 3, δ

    -Al that La is stable 2o 3, γ

    -Al that Y and Zr are stable 2o 3in at least three kinds, auxiliary agent is by rare earth oxide Y 2o 3, La 2o 3, Nd 2o 3and Sm 2o 3in at least one, at least one in alkaline-earth oxide SrO, BaO and CaO and ZrO 2and precious metals pd active component forms.

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