Micro-/mesoporous copper-containing zeolite Y applied in NH3-SCR, DeNOx

Zeolite Y was prepared by a dense-gel method and subsequently modified either by treatment with diethylamine (DEA), sodium hydroxide (NaOH) or disodium ethylenediaminetetraacetate (Na2H2EDTA), or by sequential treatment (H4EDTA-NaOH or H4EDTA-NaOH-Na2H2EDTA).