Variability of Molecular Sieve SAPO-11 Crystals: Acidity, Texture, and Morphology Full article
| Journal |
Journal of Porous Materials
ISSN: 1380-2224 , E-ISSN: 1573-4854 |
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| Output data | Year: 2022, Volume: 29, Pages: 481–492 Pages count : 12 DOI: 10.1007/s10934-021-01177-y | ||
| Tags | AEL; Silicoaluminophosphate; SAPO-11; Two-stage synthesis; Water–ethanol solvents | ||
| Authors |
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| Affiliations |
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Funding (1)
| 1 | Ministry of Science and Higher Education of the Russian Federation | 0239-2021-0004 |
Abstract:
A number of experiments on the synthesis of SAPO-11 crystals in different media (water; equimolar H2O/EtOH; low H2O/EtOH), using two methods of precursor mixing and various temperature regimes of hydrothermal treatment (HT) has been performed. It has turned out that one-stage HT at 200 °C had not provided SAPO-11 crystallization in low H2O/EtOH medium, only non-porous aluminum phosphates had been obtained, while a two-stage HT at 200 and 120 °C on the first and second stages, respectively, had allowed us to synthesize the AEL phase. Whereas equimolar water–ethanol synthesis medium has resulted in a mixture of both microporous and non-porous phases. The last one is apparently the result of the unusual properties of water–ethanol crystallization system. SAPO-11 samples which were obtained in different media have possessed “screw-like”, “tubular-like”, and “spindle-like” morphologies. SAPO-11 synthesized in the medium with the predominance of ethanol has had significant changes in physicochemical properties compared with ones obtained in water.
Cite:
Shamanaeva I.A.
, Parkhomchuk E.V.
Variability of Molecular Sieve SAPO-11 Crystals: Acidity, Texture, and Morphology
Journal of Porous Materials. 2022. V.29. P.481–492. DOI: 10.1007/s10934-021-01177-y WOS Scopus РИНЦ AN OpenAlex
Variability of Molecular Sieve SAPO-11 Crystals: Acidity, Texture, and Morphology
Journal of Porous Materials. 2022. V.29. P.481–492. DOI: 10.1007/s10934-021-01177-y WOS Scopus РИНЦ AN OpenAlex
Dates:
| Accepted: | Nov 24, 2021 |
| Published online: | Jan 7, 2022 |
| Published print: | Apr 1, 2022 |
Identifiers:
| Web of science: | WOS:000739752700001 |
| Scopus: | 2-s2.0-85122402717 |
| Elibrary: | 47909654 |
| Chemical Abstracts: | 2022:368877 |
| OpenAlex: | W4206637117 |