Synthesis, Characterization, and Application of Nano-sized DD3R Zeolite Powder in Thin DD3R Membrane Synthesis of thin DD3R membrane
| Autor: | M. Vaezi, M. G. Geranbaha, S. M. Moghimi, A. A. Babaluo |
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| Jazyk: | angličtina |
| Rok vydání: | 2024 |
| Předmět: | |
| Zdroj: | Chemical and Biochemical Engineering Quarterly, Vol 38, Iss 1, Pp 49-58 (2024) |
| Druh dokumentu: | article |
| ISSN: | 0352-9568 1846-5153 |
| DOI: | 10.15255/CABEQ.2022.2154 |
| Popis: | DD3R zeolite powder was synthesized within a brief period using tetramethyl orthosilicate through a sonochemical method combined with hydrothermal treatment. The highest crystallinity with average particle size of 47 nm was achieved within five days. This nano-sized powder was used for seeding the surface of a support modified with TiO2-Boehmite, facilitating the synthesis of a thin (less than 5 µm) and uniform DD3R zeolite layer. The resulting membrane exhibited perm-selectivities of N2 and CO2 over CH4 that were 3 and 4 times greater than those reported in literature. The surface modification of the synthesized layer using a polydimethylsiloxane solution further improved the perm-selectivity of N2/CH4 and CO2/CH4 by up to 12 and 260, respectively. The straightforward synthesis of the initial layer before modification positively influenced the perm-selectivity of N2/CH4, achieving a three-fold increase compared to similar works in the literature. |
| Databáze: | Directory of Open Access Journals |
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