| 학회 |
한국화학공학회 |
| 학술대회 |
2009년 가을 (10/22 ~ 10/23, 일산 KINTEX) |
| 권호 |
15권 2호, p.1539 |
| 발표분야 |
분리기술 |
| 제목 |
Synthesis and Water/Ethanol Separation of NaA Zeolite Composite Membranes |
| 초록 |
NaA zeolite composite membranes were prepared using a tubular alpha-alumina support by the secondary growth process and the pervaporation performance was characterized in water/ethanol mixtures. Crystalline phase and morphology of formed zeolite separation layers were analyzed by X-ray diffraction and scanning electron microscopy, respectively. Molar ratio of Si to Al in zeolite separation layers was evaluated by EDS analysis. Water/ethanol separations were characterized by using FID-GC and HPLC. Zeolite separation layers formed in Al2O3- 2SiO2-4.5Na2O- 600H2O solution has a uniform thickness of 4-5mm and a uniform Si/Al molar ratio of around 1, and the layers showed a ultra-high and reliable separation behavior in pervaporation experiments with using 95wt%-EtOH mixture: the water flux was 500 to 1200g/m2hr and the water/ethanol separation factor was 3000 to 14000. The ultra- high water/ethanol separation was from the uniform and defect-free zeolite layers formed on the alpha-alumina support. In the present study, relationship between the microstructure of formed zeolite layers and the water/ethanol separation will be reported in- detailed. |
| 저자 |
오가연1, 조철희1, 여정구1, 정남조1, 이영무2
|
| 소속 |
1한국에너지기술(연), 2한양대 |
| 키워드 |
제올라이트; 분리막; 투과증발
|
| E-Mail |
|
| 원문파일 |
초록 보기 |
