| 학회 | 한국화학공학회 |
| 학술대회 | 2005년 가을 (10/21 ~ 10/22, 인하대학교) |
| 권호 | 11권 2호, p.1899 |
| 발표분야 | 분리기술 |
| 제목 | 수정진동자를 이용한 핵생성 속도의 측정 |
| 초록 | A crystallization monitoring system using a quartz crystal oscillator was implemented in cooling crystallization of dilute lauric acid solutions to investigate the nucleation process of the solute. In addition, the microscopic observation of the oscillator surface was conducted to examine the number and size of yielded nuclei, and the observed results and the resonant frequency variation of the oscillator were compared to explain the nucleation process. The variation of the resonant frequency indicated the moments of emulsification and nucleation of lauric acid. The experimental results show that more nuclei are formed from higher concentration solution, but the nucleation rate decreases and the average size of nuclei increases with the elevation of the concentration. Namely, the crystal grows more rather than new nuclei formation in the high concentration solution. It was also demonstrated that the monitoring device is useful to investigate the crystallization process in dilute solutions, which often requires large analytical instruments. |
| 저자 | 김병철, 김영한, 김상열 |
| 소속 | 동아대 |
| 키워드 | crystallization; nucleation; process sensor |
| 원문파일 | 초록 보기 |
