Venkatathri, N. ; Hegde, S. G. ; Sivasanker, S. (2003) Studies on vanadium incorporation in AFI type molecular sieves Indian Journal of Chemistry - Section A: Inorganic, Physical, Theoretical and Analytical Chemistry, 42 (5). pp. 974-982. ISSN 0376-4710
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Abstract
Vanadium aluminophosphates (VAPO-5) and vanadium silicoaluminophosphates (VAPSO-5) have been synthesized with different vanadium and silicon contents using tripropylamine (TPA) and hexamethyleneimine (HEM) as templates. Alarger incorporation of V takes place when HEM is used. The studies reveal that vanadium replaces both phosphorous and silicon. The VAPO-5 and VAPSO-5 samples synthesized using hexamethyleneimine have been characterized by XRD, SEM, TG/DTA, FT-IR, UV-vis., ESR, and cyclic voltammetry. About three fourth of the vanadium in the samples are found to be present in a tetrahedral co-ordination and the rest in square pyramidal or distorted octahedral co-ordination. The catalytic activities of the samples in the oxidation of toluene with tertiary butyl hydroperoxide and acetalization of benzaldehyde are presented.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to National Institute of Science Communication and Information Resources. |
| ID Code: | 83371 |
| Deposited On: | 20 Feb 2012 09:16 |
| Last Modified: | 20 Feb 2012 09:16 |
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