RED-OX PROPERTIES AND CATALYTIC ACTIVITY IN CO OXIDATION COPPER-CONTAINING ZEOLITE SYSTEMS
UDC 541.128.13
Keywords:
-Abstract
The catalytic activity in CO oxidation of 10% Cu-zeolite systems after their formation in various temperature intervals (Tform=20-350oC and Tform=20-500oC) was investigated. It was established that activity of loaded 0% Cu-zeolite systems (Tform=20-350oC) decrease in the order: Cu-NaZSM-5 (47) > Cu-NaX > Cu-NaZSM-5 (69) > Cu-Na,K-ERI > Cu-NaZSM-5 (37) > Cu-NaA > Cu-NaM. It was shown, that activity of zeolite systems mostly determined by the quantity of active centres – Cu2+ cations which practically haven't interaction with carrier surface, surround by oxygen ions with high reaction ability and easy undergo red-ox processes (T < 300oC).
References
1. Голодец, Г. И. Гетерогенно-каталитические реакции с участием молекулярного кислорода. — К. — 1978. — 367 с.
2. Alekseev, O. S., Nosova, L. V., Ryndin, Yu. A. Formation and Properties of Dispersed Pd Particles over Graphite and Diamond // New Frontiers in Catalysis (Guczi, L. et al. (Editors)).: Proceedings of the 10th International Congress on Catalysis, Budapest, Hungary; Amsterdam, Elsevier. — 1992. Part A — P. 837-847.
3. Chernavskiy, P. A., Lermontov, A. S., Pankina, G. V. et al. Effect of the $ZrO_2$ Pore structure on the Reduction of a Supported Cobalt Oxide in Catalysts for Fischer-Tropsch Synthesis // Kinetics and Catalysis. — 2002. — Vol. 43. — P. 268-274.
4. Goryaschenko, S. S., Slovezkaya, K. I., Slinkin, A. A. The effect of preliminary treatment on the catalytic activity of cobalt-silica gel catalysts in the complete oxidation of methane // Kinetics and Catalysis. — 2001. — Vol. 42. — P. 525-526.
5. Kim, T. W., Song, M. W., Koh, H. L., Kim, K. L. Surface properties and reactivity of Cugamma-Al2O3 catalysts for NO reduction by C3H6: Influences of calcination temperatures and additives // Applied Catalysis. A. — 2001. — Vol. 210. — P. 35-44.
6. Meng-Fei Luo, Ping Fang, Mai He, Yun-Long Xie. In situ XRD, Raman, and TPR studies of CuO/Al2O3 catalysts for CO oxidation // Journal of Molecular Catalysis A: Chemical. — 2005. — Vol. 239. — P. 243–248.
Downloads
Published
Issue
Section
License
Copyright (c) 2007 Л. Олексенко, канд. хім. наук, Юе Чень, асп., И. Кузьмич, канд. хім. наук

This work is licensed under a Creative Commons Attribution 4.0 International License.
