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Two series of ZSM-5 and beta zeolites were pretreated in 1.0 mol/L HNO3 solution at room temperature for various time periods. The catalytic performances of their Fe-exchanged products in N2O decomposition were evaluated. The Fe-zeolite catalysts were characterized using N2 adsorption-desorption, inductively coupled plasma optical emission spectroscopy, X-ray diffraction, ultraviolet-visible spectroscopy,...
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