Rapid and Effective Way to Synthesize Highly Crystalline Nanosized SAPO-34 Particles Full article
| Journal |
Nanomaterials
, E-ISSN: 2079-4991 |
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| Output data | Year: 2022, Volume: 12, Number: 22, Article number : 4086, Pages count : 14 DOI: 10.3390/nano12224086 | ||
| Tags | SAPO-34; dry gel conversion; steam-assisted crystallization; nanocrystals; coated adsorber | ||
| Authors |
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| Affiliations |
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Funding (1)
| 1 | Russian Science Foundation | 21-79-10183 |
Abstract:
SAPO-34 nanocrystals with sizes of 50–150 nm were obtained via steam-assisted crystallization (SAC) for 5 h at 200 °C from two types of aluminum precursors—aluminum isopropoxide and boehmite. A reaction mixture composition with a small amount of organic template tetraehylammonium hydroxide (TEAOH) was used with the molar ratio TEAOH/Al2O3 = 1/1. The alumina precursor type and duration of the SAC (5 and 24 h) on the crystal size, texture, and acid properties were investigated. The SAPO-34 nanocrystals that we obtained possess a large micropore volume of 0.22–0.24 cm3/g and a specific surface area of 651–695 m2/g. When the crystallization was prolonged for up to 24 h, a SAPO-18 structure appeared, but the micropore and mesopore volumes changed insignificantly. Using boehmite as the aluminum precursor led to higher mesoporosity of the material but a little bit lower acidity when compared with the samples prepared from aluminum isopropoxide. In addition, the method proposed was used for preparing a SAPO-34-coated aluminum adsorber heat exchanger. Thus, the synthesis method proposed is affordable and effective to prepare SAPO-34 highly crystalline nanoparticles, with no need for post-synthetic procedures as the mother liquor separation from nanocrystals.
Cite:
Shamanaeva I.
, Strelova S.
, Solovyeva M.
, Grekova A.
Rapid and Effective Way to Synthesize Highly Crystalline Nanosized SAPO-34 Particles
Nanomaterials. 2022. V.12. N22. 4086 :1-14. DOI: 10.3390/nano12224086 WOS Scopus РИНЦ AN PMID OpenAlex
Rapid and Effective Way to Synthesize Highly Crystalline Nanosized SAPO-34 Particles
Nanomaterials. 2022. V.12. N22. 4086 :1-14. DOI: 10.3390/nano12224086 WOS Scopus РИНЦ AN PMID OpenAlex
Dates:
| Submitted: | Oct 31, 2022 |
| Accepted: | Nov 17, 2022 |
| Published print: | Nov 20, 2022 |
| Published online: | Nov 20, 2022 |
Identifiers:
| Web of science: | WOS:000887722500001 |
| Scopus: | 2-s2.0-85142447669 |
| Elibrary: | 50359120 |
| Chemical Abstracts: | 2022:3000610 |
| PMID: | 36432371 |
| OpenAlex: | W4309737267 |