bifunctional catalysts for selective ammonia oxidation

bifunctional catalysts for selective ammonia oxidation

CN
  • CN 101,711,185 A
  • Filed: 02/27/2008
  • Published: 05/19/2010
  • Est. Priority Date: 02/27/2007
  • Status: Active Application
First Claim
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1. handle the method for the emission that generates in the waste gas stream of diesel oil or lean-burn vehicle, described method comprises:

  • vehicle motor waste gas is flow to pass through NO less XThe subduction catalyst;

    Leave described NO with making XThe subduction catalyst also may contain the waste gas circulation oxidation catalyst of ammonia, described oxidation catalyst comprises platinum, second metal from one of periodic table VB, VIB, VIIB, VIIIB, IB or IIB family, refractory metal oxide and zeolite, described oxidation catalyst has been effectively being lower than under about 300 ℃

    temperature for removing ammonia, and the remarkable decline that does not show ammoxidation efficient after standing hydrothermal aging.

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