The reversibility of dealumination±realumination process of BEA zeolite by pH control was investigated by means of nitrogen adsorption, XRD, 27 Al MAS NMR and FT-IR. Aluminum species in the solution, which were eliminated from the framework of BEA zeolite by HCl treatment, were easily reinserted int
✦ LIBER ✦
Process for the preparation of dealuminated zeolite
✍ Scribed by R. Schoedel; H.-D. Neubauer; F. Vogt
- Book ID
- 107894798
- Publisher
- Elsevier Science
- Year
- 1996
- Tongue
- English
- Weight
- 114 KB
- Volume
- 17
- Category
- Article
- ISSN
- 0144-2449
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The dealumination of zeolite L was attempted by steaming, treatment with ammonium hexa¯uorosilicate, and with silicon tetrachloride. The zeolite framework can be dealuminated most eectively through ion exchange into the sodium form followed by treatment with silicon tetrachloride. The crystalline st