Cu-I-ferrierite was prepared by reaction between the protonic form of the zeolite and CuCl vapour. UV-Vis spectroscopy showed that copper was present in the zeolite mainly in the form of Cu-I ions; no evidence was found for the presence of Cu-II ions or copper species in microaggregates. FTIR spectroscopy showed that the zeolite adsorbs CO at liquid nitrogen temperature with formation of Cu-I(CO)(n) adducts, mainly mono- and dicarbonyls. After dosing with dioxygen at room temperature Cu-I-ferrierite was partially oxidized. This partially oxidized sample was found to be capable of oxidizing carbon monoxide.
Vibrational and optical spectroscopic studies on copper-exchanged ferrierite
BORDIGA, Silvia;LAMBERTI, Carlo;ZECCHINA, Adriano;
2002-01-01
Abstract
Cu-I-ferrierite was prepared by reaction between the protonic form of the zeolite and CuCl vapour. UV-Vis spectroscopy showed that copper was present in the zeolite mainly in the form of Cu-I ions; no evidence was found for the presence of Cu-II ions or copper species in microaggregates. FTIR spectroscopy showed that the zeolite adsorbs CO at liquid nitrogen temperature with formation of Cu-I(CO)(n) adducts, mainly mono- and dicarbonyls. After dosing with dioxygen at room temperature Cu-I-ferrierite was partially oxidized. This partially oxidized sample was found to be capable of oxidizing carbon monoxide.
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