Effect of the preparation method on the catalytic properties of copper-containing zeolite Y applied for NH₃-SCR-DeNO_x

Abstract

Two series of zeolite Y were prepared with varying particle size (estimated 100 or 400 nm) by applying different synthesis gel composition ratios as well as different ageing and hydrothermal...

OSDA-Free Seeded Cu-Containing ZSM-5 Applied for NH3–SCR-DeNOx

“…The normalized XANES spectra collected at the Cu K-edge for Cu-ZSM-5, along with Cu reference compounds [CuO and Cu­(OH) 2 ] are compared in Figure . The discussion about other reference materials was already published in the previous paper . The copper species located in zeolites have a very complex nature, and they cannot be easily compared to the standard reference materials.…”

“…The discussion about other reference materials was already published in the previous paper. 38 The copper species located in zeolites have a very complex nature, and they cannot be easily compared to the standard reference materials. In all presented spectra in these studies, a weak pre-edge feature is observed at 8977.8 eV, indicating a Cu 2+ state.…”