| 简介 |
The catalytic composition of the invention includes/understands (I) a compound containing oxide of zirconium, oxide titanium, oxide of tungsten and at least an oxide of another element M chosen among silicon, aluminium, iron, molybdenum, manganese, zinc, tin and rare earths in the proportions in titanium oxide mass from 20% to 50%, of tungsten oxide from 1% to 20%, of oxide of the element M from 1% to 20%, the zirconium oxide complement, and which has moreover an acidity measured by the test to the méthylbutynol from at least 90% and (II) one zeolite. This composition can be used in a process of the type SCR. |
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