| 학회 | 한국화학공학회 |
| 학술대회 | 2006년 가을 (10/27 ~ 10/28, 고려대학교) |
| 권호 | 12권 2호, p.1652 |
| 발표분야 | 분리기술 |
| 제목 | Development of new photoacoustic signal generation theory for in situ concentration profiling on permeant/membrane system |
| 초록 | Microporous molecular sieve membranes have potential to revolutionize several industrially important separations. Considerable research has hence been aimed at membrane composition (including guest molecule concentration) and transport properties as a function of depth. The study of membrane transport phenomena depends heavily on theoretical models (e.g., the Maxwell-Stefan equations). We are developing non-destructive, in situ methods based on photoacoustic spectroscopy to probe the depth dependence of membrane composition. Here we present an new photoacoustic signal generation theory, to apply the non-destructive concentration profiling of molecular sieve membranes. In particular, we have applied the new theory on step-scan photoacoustic spectroscopy (SS-PAS) to depth-profile MFI zeolite membranes. The new photoacoustic theory is useful to monitor depth-profiles during in situ measurements. The monitored depth-profile is continuous and quantitative. In addition, the positions of the layer interfaces and the layer thicknesses are obtained. |
| 저자 | 오원태 |
| 소속 | 동의대 |
| 키워드 | Photoacoustics; concentration profiling; membrane; transport dynamics |
| 원문파일 | 초록 보기 |
