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Title: | Assignment of the Hydroxyl Bands in the Infrared Spectra of Zeolites X and Y: Part 2.—After Different Pretreatments |
Authors: | Jacobs, P. A. Uytterhoeven, J. B. |
Keywords: | Chemistry Hydroxyl Bands Infrared Spectra Zeolites X and Y Pretreatment Effects Journal of the Chemical Society : Faraday Transaction - I |
Issue Date: | 1973 |
Publisher: | Journal of the Chemical Society : Faraday Transaction - I. The Chemical Society, London. 1973, 69 (2) |
Abstract: | The i.r. absorption curve of “ deep bed ” calcined NH4Y zeolites could be broken down into the same components as HY zeolites. The frequency of the peaks was slightly changed, but their half band width remained constant. In a scries of treatments representing increasing hydrolysis non-acidic OH bands around 3680 and 3600 cm-1 increase in intensity, due to surface OH groups near Al defect locations. Polynuclear Al species bridging the cubo-octahcdra are suggested to be partly responsible for the increased thermal stability. The non-acidic OH bands in synthetic faujasites exchanged with polyvalent cations are explained on the same basis, since they behave in a similar way as the non-acidic bands on “ deep bed ” zeolites after different treatments. |
URI: | http://dspace.bits-pilani.ac.in:8080/jspui/handle/123456789/17480 |
Appears in Collections: | Journal Articles (before-1995) |
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File | Description | Size | Format | |
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373-386.pdf Restricted Access | 1.54 MB | Adobe PDF | View/Open Request a copy |
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