Two Different States of Copper Ions in Zeolites

Andrey Efimov; Alexey Pestryakov; Miguel Ángel Hernández Espinosa; Fernando Chávez Rivas; Vitalii Petranovskii

doi:10.4028/www.scientific.net/AMR.880.151

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 880Two Different States of Copper Ions in Zeolites

Two Different States of Copper Ions in Zeolites

Abstract:

This work is devoted to the study of copper ion positions in zeolite matrices. Copper cations were exchanged in mordenite and zeolite X from aqueous solutions of different copper salts varying their concentrations. Electronic state of copper in ion-exchanged samples exchanged and dried at different temperatures was evaluated by XPS spectroscopy. Depending on conditions of exchange treatment copper was found to be distributed between two different accessible sites in zeolites. These copper ions are stabilized as isolated species with well-defined oxygen coordination polyhedra.

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Periodical:

Advanced Materials Research (Volume 880)

Pages:

151-154

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.880.151

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Online since:

January 2014

Authors:

Andrey Efimov, Alexey Pestryakov*, Miguel Ángel Hernández Espinosa, Fernando Chávez Rivas, Vitalii Petranovskii

Keywords:

Copper, Erionite, Faujasite, Mordenite, Nanoparticle, Reduction, XPS, ZSM-5

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