Academic Journal
Template-Free Synthesis of High Dehydration Performance CHA Zeolite Membranes with Increased Si/Al Ratio Using SSZ-13 Seeds
| Title: | Template-Free Synthesis of High Dehydration Performance CHA Zeolite Membranes with Increased Si/Al Ratio Using SSZ-13 Seeds |
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| Authors: | Jing Du, Jilei Jiang, Zhigang Xue, Yajing Hu, Bo Liu, Rongfei Zhou, Weihong Xing |
| Source: | Membranes, Vol 14, Iss 4, p 78 (2024) |
| Publisher Information: | MDPI AG, 2024. |
| Publication Year: | 2024 |
| Collection: | LCC:Chemical technology LCC:Chemical engineering |
| Subject Terms: | pervaporation, vapor permeation, zeolite membrane, template-free, Si-rich CHA zeolite, Chemical technology, TP1-1185, Chemical engineering, TP155-156 |
| More Details: | Pervaporation is an energy-efficient alternative to conventional distillation for water/alcohol separations. In this work, a novel CHA zeolite membrane with an increased Si/Al ratio was synthesized in the absence of organic templates for the first time. Nanosized high-silica zeolite (SSZ-13) seeds were used for the secondary growth of the membrane. The separation performance of membranes in different alcohol–aqueous mixtures was measured. The effects of water content in the feed and the temperature on the separation performance using pervaporation and vapor permeation were also studied. The best membrane showed a water/ethanol separation factor above 100,000 and a total flux of 1.2 kg/(m2 h) at 348 K in a 10 wt.% water–ethanol mixed solution. A membrane with high performance and an increased Si/Al ratio is promising for the application of alcohol dehydration. |
| Document Type: | article |
| File Description: | electronic resource |
| Language: | English |
| ISSN: | 2077-0375 |
| Relation: | https://www.mdpi.com/2077-0375/14/4/78; https://doaj.org/toc/2077-0375 |
| DOI: | 10.3390/membranes14040078 |
| Access URL: | https://doaj.org/article/cddc66b8735146b0ae8aef5531ed6e4c |
| Accession Number: | edsdoj.66b8735146b0ae8aef5531ed6e4c |
| Database: | Directory of Open Access Journals |
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| ISSN: | 20770375 |
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| DOI: | 10.3390/membranes14040078 |
| Published in: | Membranes |
| Language: | English |