Insertion of zeolite in sol-gel made catalytic material: an EPR study |
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Authors: | Rafael Díaz_Real and Keilash Khulbe |
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Institution: | (1) Departamento de Ingeniería y Ciencias Químicas, Universidad Iberoamericana Prol. Paseo de la Reforma 880, México, D.F., 01210, México;(2) Department of Chemical Engineering, University of Ottawa, 770 King Edward St., Ottawa, Ontario, Canada, K1N 6N5 |
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Abstract: | Incorporation of zeolite to catalyst base-supports generally endows them with improved catalytic properties; especially those
related to selectivity and activity. These effects are due to the stronger than normal acidity of zeolites and their molecular
sieve effect. Such properties alter notoriously the way in which metals incorporate into a crystalline sol-gel catalytic matrix.
Most noticeable effects on the surface as per EPR analysis occur upon incorporation of copper as metal catalyst when ZSM-5
zeolite is added, then when adding β-zeolite and finally when using Y-zeolite.
This revised version was published online in June 2006 with corrections to the Cover Date. |
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Keywords: | zeolite EPR Sol-gel silica-alumina alkoxide |
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