Investigation of occluded and nonoccluded synthetic zeolites. Base-catalyzed demethylation of tetramethylthionine-methylene blue on a denitrated zeolite
Само за регистроване кориснике
1972
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
The adsorption of methylene blue from aqueous and non-aqueous media onto the zeolite NaA, the occluded zeolite NaANaNO3 and the denitrated zeolite NaANa2O has been investigated. Adsorption isotherms have a standard form and a monolayer adsorption on the zeolite NaA is suggested on the basis of linear Langmuir plots. Demethylation of methylene blue in the presence of the denitrated zeolite has been shown from the changes in the absorption spectrum of the solution. In an alcoholic medium the demethylation is partial and yields the neutral trimethylthionine, TMT. In aqueous medium the demethylation process leads to the completely demethylated product, thionine, and the reaction occurs as a secondary process on the zeolite surface. The demethylation is base catalyzed by the activity of the strongly electronegative surface of the denitrated zeolite NaANa2O. A mechanism of demethylation in aqueous and alcoholic media has been suggested.
Кључне речи:
zeolite / occluded and nonoccluded synthetic zeolites / demethylation / denitrated zeoliteИзвор:
Journal of Inorganic and Nuclear Chemistry, 1972, 34, 7, 2349-2356Издавач:
- Elsevier
Институција/група
IHTMTY - JOUR AU - Šušić, Milenko V. AU - Petranović, Nadeẑda A. AU - Miočinović, B. PY - 1972 UR - https://cer.ihtm.bg.ac.rs/handle/123456789/4665 AB - The adsorption of methylene blue from aqueous and non-aqueous media onto the zeolite NaA, the occluded zeolite NaANaNO3 and the denitrated zeolite NaANa2O has been investigated. Adsorption isotherms have a standard form and a monolayer adsorption on the zeolite NaA is suggested on the basis of linear Langmuir plots. Demethylation of methylene blue in the presence of the denitrated zeolite has been shown from the changes in the absorption spectrum of the solution. In an alcoholic medium the demethylation is partial and yields the neutral trimethylthionine, TMT. In aqueous medium the demethylation process leads to the completely demethylated product, thionine, and the reaction occurs as a secondary process on the zeolite surface. The demethylation is base catalyzed by the activity of the strongly electronegative surface of the denitrated zeolite NaANa2O. A mechanism of demethylation in aqueous and alcoholic media has been suggested. PB - Elsevier T2 - Journal of Inorganic and Nuclear Chemistry T1 - Investigation of occluded and nonoccluded synthetic zeolites. Base-catalyzed demethylation of tetramethylthionine-methylene blue on a denitrated zeolite VL - 34 IS - 7 SP - 2349 EP - 2356 DO - 10.1016/0022-1902(72)80171-4 ER -
@article{ author = "Šušić, Milenko V. and Petranović, Nadeẑda A. and Miočinović, B.", year = "1972", abstract = "The adsorption of methylene blue from aqueous and non-aqueous media onto the zeolite NaA, the occluded zeolite NaANaNO3 and the denitrated zeolite NaANa2O has been investigated. Adsorption isotherms have a standard form and a monolayer adsorption on the zeolite NaA is suggested on the basis of linear Langmuir plots. Demethylation of methylene blue in the presence of the denitrated zeolite has been shown from the changes in the absorption spectrum of the solution. In an alcoholic medium the demethylation is partial and yields the neutral trimethylthionine, TMT. In aqueous medium the demethylation process leads to the completely demethylated product, thionine, and the reaction occurs as a secondary process on the zeolite surface. The demethylation is base catalyzed by the activity of the strongly electronegative surface of the denitrated zeolite NaANa2O. A mechanism of demethylation in aqueous and alcoholic media has been suggested.", publisher = "Elsevier", journal = "Journal of Inorganic and Nuclear Chemistry", title = "Investigation of occluded and nonoccluded synthetic zeolites. Base-catalyzed demethylation of tetramethylthionine-methylene blue on a denitrated zeolite", volume = "34", number = "7", pages = "2349-2356", doi = "10.1016/0022-1902(72)80171-4" }
Šušić, M. V., Petranović, N. A.,& Miočinović, B.. (1972). Investigation of occluded and nonoccluded synthetic zeolites. Base-catalyzed demethylation of tetramethylthionine-methylene blue on a denitrated zeolite. in Journal of Inorganic and Nuclear Chemistry Elsevier., 34(7), 2349-2356. https://doi.org/10.1016/0022-1902(72)80171-4
Šušić MV, Petranović NA, Miočinović B. Investigation of occluded and nonoccluded synthetic zeolites. Base-catalyzed demethylation of tetramethylthionine-methylene blue on a denitrated zeolite. in Journal of Inorganic and Nuclear Chemistry. 1972;34(7):2349-2356. doi:10.1016/0022-1902(72)80171-4 .
Šušić, Milenko V., Petranović, Nadeẑda A., Miočinović, B., "Investigation of occluded and nonoccluded synthetic zeolites. Base-catalyzed demethylation of tetramethylthionine-methylene blue on a denitrated zeolite" in Journal of Inorganic and Nuclear Chemistry, 34, no. 7 (1972):2349-2356, https://doi.org/10.1016/0022-1902(72)80171-4 . .
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