Effect of the acid activation on a layered titanosilicate AM-4: the fine-tuning of structural and physicochemical properties
| dc.contributor.author | Timofeeva, Maria N. | |
| dc.contributor.author | Kalashnikova, Galina O. | |
| dc.contributor.author | Shefer, Kristina I. | |
| dc.contributor.author | Mel'gunova, Elena A. | |
| dc.contributor.author | Panchenko, Valentina N. | |
| dc.contributor.author | Nikolaev, Anatoliy I. | |
| dc.contributor.author | Gil Bravo, Antonio | |
| dc.contributor.department | Zientziak | eu |
| dc.contributor.department | Institute for Advanced Materials and Mathematics - INAMAT2 | en |
| dc.contributor.department | Ciencias | es_ES |
| dc.date.accessioned | 2020-05-26T13:13:04Z | |
| dc.date.available | 2022-03-01T00:00:16Z | |
| dc.date.issued | 2020 | |
| dc.description.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. | en |
| dc.description.sponsorship | This work was conducted within the framework of the budget projects АААА-А17-117041710082-8 for Boreskov Institute of Catalysis and AAAA-A17-117020110075-1 for Nanomaterials Research Centre of the Federal Research Centre 'Kola Science Centre of the Russian Academy of Sciences' (NMRC KSC RAS), respectively. AG thanks Santander Bank for funding through the Research Intensification Program. | en |
| dc.embargo.lift | 2022-03-01 | |
| dc.embargo.terms | 2022-03-01 | |
| dc.format.extent | 31 p. | |
| dc.format.mimetype | application/pdf | en |
| dc.identifier.doi | 10.1016/j.clay.2020.105445 | |
| dc.identifier.issn | 0169-1317 | |
| dc.identifier.uri | https://academica-e.unavarra.es/handle/2454/36984 | |
| dc.language.iso | eng | en |
| dc.publisher | Elsevier | en |
| dc.relation.ispartof | Applied Clay Science, 2020, 186, 105445 | en |
| dc.relation.publisherversion | https://doi.org/10.1016/j.clay.2020.105445 | |
| dc.rights | © 2020 Elsevier B.V. This manuscript version is made available under the CC-BY-NC-ND 4.0 | en |
| dc.rights.accessRights | info:eu-repo/semantics/openAccess | |
| dc.rights.uri | https://creativecommons.org/licenses/by-nc-nd/4.0/ | |
| dc.subject | Layered titanosilicate AM-4 | en |
| dc.subject | Acid treatment | en |
| dc.subject | 1,5-benzodiazepine | en |
| dc.subject | 1,2-phenylenediamine | en |
| dc.subject | Cyclocondensation reaction | en |
| dc.title | Effect of the acid activation on a layered titanosilicate AM-4: the fine-tuning of structural and physicochemical properties | en |
| dc.type | info:eu-repo/semantics/article | |
| dc.type.version | info:eu-repo/semantics/embargoedAccess | |
| dspace.entity.type | Publication | |
| relation.isAuthorOfPublication | cd12e590-cb42-47d5-a642-f60eeee624ec | |
| relation.isAuthorOfPublication.latestForDiscovery | cd12e590-cb42-47d5-a642-f60eeee624ec |