A Fiber Optic Interferometric Sensor Platform for Determining Gas Diffusivity in Zeolite Films
Abstract
:1. Introduction
2. Experimental Section
2.1. Sensor Structure and Operation Principle
2.2. Sensor Fabrication
2.3. Apparatus and Measurement Procedure
2.4. Determination of Optical Thickness of the Zeolite Film
2.5. Determination of Diffusivity
3. Results and Discussion
3.1. Zeolite Film-Coated FOI Sensor
3.2. Isobutane Isotherms
3.3. Diffusivity Determination by Optical Measurements
3.3.1. Diffusivity and Concentration Dependence
3.3.2. Determination of Temperature Dependence
4. Conclusions
Acknowledgments
Author Contributions
Conflicts of Interest
References
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T, °C | , 10−3 mol/g | , 10−3 mol/cm3 | , 10−3 Pa−1 |
---|---|---|---|
24 | 1.034 | 1.8198 | 1.702 |
60 | 0.7309 | 1.2864 | 1.562 |
80 | 0.7019 | 1.2353 | 1.271 |
100 | 0.6743 | 1.1868 | 0.541 |
120 | 0.6143 | 1.0811 | 0.317 |
Zeolite | T, K | D, 10−12 m2/s | Method | Source |
---|---|---|---|---|
Silicalite | 297 | 1.20–4.20 | FOI (1) | This work |
Silicalite | 297 | 2.89–4.20 | FOI (2) | This work |
Silicalite | 297 | 1.90 | MBR | [21] |
Silicalite | 303 | 2.50 | MBR | [22] |
Silicalite | 303 | 1.10 | MBR | [23] |
Silicalite | 298 | 1.37–2.29 | FTIR | [7] |
Silicalite | 303 | 1.49 | ZLC | [24] |
ZSM-5 (Si/Al = 36) | 303 | 7.00 | MBR | [25] |
ZSM-5 (Si/Al = 35) | 293 | 0.14 | ZLC | [26] |
Zeolite | , 10−9 m2/s | Ed, kJ/mol | Method | Source |
---|---|---|---|---|
Silicalite | 2.51 | 18.22 | FOI | this study |
Silicalite | 4.30 | 32.2 | ZLC | [24] |
Silicalite | 3.29 | 24.3 | ZLC | [26] |
ZSM-5 (Si/Al = 35) | 6.70 | 31.6 | MBR | [25] |
ZSM-5 (Si/Al = 36) | 1.50 | 15.1 | MBR | [22] |
ZSM-5 (Si/Al = 36) | NA | 24.2 | CHG | [27] |
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Yang, R.; Xu, Z.; Zeng, S.; Jing, W.; Trontz, A.; Dong, J. A Fiber Optic Interferometric Sensor Platform for Determining Gas Diffusivity in Zeolite Films. Sensors 2018, 18, 1090. https://doi.org/10.3390/s18041090
Yang R, Xu Z, Zeng S, Jing W, Trontz A, Dong J. A Fiber Optic Interferometric Sensor Platform for Determining Gas Diffusivity in Zeolite Films. Sensors. 2018; 18(4):1090. https://doi.org/10.3390/s18041090
Chicago/Turabian StyleYang, Ruidong, Zhi Xu, Shixuan Zeng, Wenheng Jing, Adam Trontz, and Junhang Dong. 2018. "A Fiber Optic Interferometric Sensor Platform for Determining Gas Diffusivity in Zeolite Films" Sensors 18, no. 4: 1090. https://doi.org/10.3390/s18041090