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Fe-ZSM5 catalysts were fully Fe-exchanged by pretreating the parent zeolite with base a solution prior to the Fe-exchange. The catalysts prepared in this way showed very low amount of inactive FeOx and improved performance in N 2 O decomposition. Alkaline leaching breaks down the zeolite crystals – which shorten the diffusional lengths – and the Fe-exchange is completed. The improved performance...
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