Effect of the Acid Activation on a Layered Titanosilicate AM-4: The Fine-Tuning of Structural and Physicochemical Properties Full article
| Journal |
Applied Clay Science
ISSN: 0169-1317 , E-ISSN: 1872-9053 |
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| Output data | Year: 2020, Volume: 186, Article number : 105445, Pages count : 8 DOI: 10.1016/j.clay.2020.105445 | ||||||||
| Tags | Layered titanosilicate AM-4, Acid treatment, 1,5-benzodiazepine, 1,2-phenylenediamine, Cyclocondensation reaction | ||||||||
| Authors |
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| Affiliations |
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Funding (3)
| 1 | Federal Agency for Scientific Organizations | 0303-2016-0007 |
| 2 | Federal Agency for Scientific Organizations | 007-ГЗ/У9423/226 (АААА-А17-117020110075-1) |
| 3 | Santander Bank |
Abstract:
In this work we investigated the microporous layered titanosilicate AM-4 (Aveiro-Manchester material number 4) of a synthetic analogous the mineral Lintisite having edge-shared brookite-type TiO6 chains. The objective of our work was to verify the effects of the acid activation on the AM-4 properties, treated with 0.0625–0.25 M HNO3. The results of the physicochemical characterization by SEM, XRD, IR and DR UV–vis spectroscopy, nitrogen adsorption/desorption at 77 K have provided evidences that texture, chemical composition, structural and physicochemical properties of AM-4 could be adjusted by treatment with 0.0625–0.25 M HNO3. According to the method of mass titration, surface acidity (pHPZC) of AM-4 roses with increasing HNO3 concentration, which was in accord with the increase of the reaction rate and yield of 1,5-benzodiazepine in the reaction of cyclocondansation between 1,2-phenylenediamine and acetone.
Cite:
Timofeeva M.N.
, Kalashnikova G.O.
, Shefer K.I.
, Mel'gunova E.A.
, Panchenko V.N.
, Nikolaev A.I.
, Gil A.
Effect of the Acid Activation on a Layered Titanosilicate AM-4: The Fine-Tuning of Structural and Physicochemical Properties
Applied Clay Science. 2020. V.186. 105445 :1-8. DOI: 10.1016/j.clay.2020.105445 WOS Scopus РИНЦ AN OpenAlex
Effect of the Acid Activation on a Layered Titanosilicate AM-4: The Fine-Tuning of Structural and Physicochemical Properties
Applied Clay Science. 2020. V.186. 105445 :1-8. DOI: 10.1016/j.clay.2020.105445 WOS Scopus РИНЦ AN OpenAlex
Dates:
| Submitted: | Nov 10, 2019 |
| Accepted: | Jan 9, 2020 |
| Published online: | Jan 15, 2020 |
| Published print: | Mar 1, 2020 |
Identifiers:
| Web of science: | WOS:000521381700008 |
| Scopus: | 2-s2.0-85077803078 |
| Elibrary: | 43232760 |
| Chemical Abstracts: | 2020:106388 |
| OpenAlex: | W3000048184 |