A Comparative Study of State and Reactivity of Copper Ions Embedded in Various Molecular Sieve Materials

Autor: F. Vogt, W. Mörke, I. Achkar, K.‐P. Wendlandt
Rok vydání: 1991
Předmět:
DOI: 10.1016/s0167-2991(08)61573-6
Popis: The coordination, localization, stabilization and reduction of copper ions embedded in various zeolitic and oxidic materials were studied using EPR and TPR. Coordination polyhedra and kind of ligands in the copper complexes after thermal treatment at 250 and 500°C has been evaluated and their relation to TPR results is shown. The covalent bond character of the copper-matrix interaction increases with increasing SiO 2 /Al 2 O 3 mole ratio in zeolites.
Databáze: OpenAIRE