An automated flow platform for accurate determination of gas–liquid–solid reaction kinetics
An automated flow platform based on a tube-in-tube contactor and micro-packed bed reactor is developed to measure the kinetics of gas–liquid–solid hydrogenation reactions. The liquid flowing in the inner tube of the tube-in-tube contactor is rapidly saturated to ensure a constant H2 concentration be...
| Main Authors: | , , , , , |
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| Other Authors: | |
| Format: | Article |
| Language: | English |
| Published: |
Royal Society of Chemistry (RSC)
2020
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| Online Access: | https://hdl.handle.net/1721.1/127680 |
| _version_ | 1826197386694754304 |
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| author | Duan, Xiaonan Tu, Jiacheng Teixeira, Andrew R. Sang, Le Jensen, Klavs F. Zhang, Jisong |
| author2 | Massachusetts Institute of Technology. Department of Chemical Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Chemical Engineering Duan, Xiaonan Tu, Jiacheng Teixeira, Andrew R. Sang, Le Jensen, Klavs F. Zhang, Jisong |
| author_sort | Duan, Xiaonan |
| collection | MIT |
| description | An automated flow platform based on a tube-in-tube contactor and micro-packed bed reactor is developed to measure the kinetics of gas–liquid–solid hydrogenation reactions. The liquid flowing in the inner tube of the tube-in-tube contactor is rapidly saturated to ensure a constant H2 concentration before entering the micro-packed bed, which transforms the gas–liquid–solid system into a liquid–solid system. A ramping strategy is adopted in which the continuously varied residence time and the corresponding conversion data are obtained in a single experiment. Two reactions including hydrogenation of α-methylstyrene and nitrobenzene are chosen to demonstrate the accuracy and efficiency of this automated platform. Varying the flow rate ramping shows that accurate kinetic determination requires a specific range of flow rate ramps. A kinetic curve of conversion versus residence time (more than ten thousand data points) can be obtained in a single experiment within 50 min. The kinetic parameters obtained with this strategy agree well with literature values. The automated flow platform with flow rate ramping enables accurate determination of gas–liquid–solid reaction kinetics with higher efficiency and lower reagent cost compared with other methods. |
| first_indexed | 2024-09-23T10:47:15Z |
| format | Article |
| id | mit-1721.1/127680 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T10:47:15Z |
| publishDate | 2020 |
| publisher | Royal Society of Chemistry (RSC) |
| record_format | dspace |
| spelling | mit-1721.1/1276802022-09-27T15:00:12Z An automated flow platform for accurate determination of gas–liquid–solid reaction kinetics Duan, Xiaonan Tu, Jiacheng Teixeira, Andrew R. Sang, Le Jensen, Klavs F. Zhang, Jisong Massachusetts Institute of Technology. Department of Chemical Engineering An automated flow platform based on a tube-in-tube contactor and micro-packed bed reactor is developed to measure the kinetics of gas–liquid–solid hydrogenation reactions. The liquid flowing in the inner tube of the tube-in-tube contactor is rapidly saturated to ensure a constant H2 concentration before entering the micro-packed bed, which transforms the gas–liquid–solid system into a liquid–solid system. A ramping strategy is adopted in which the continuously varied residence time and the corresponding conversion data are obtained in a single experiment. Two reactions including hydrogenation of α-methylstyrene and nitrobenzene are chosen to demonstrate the accuracy and efficiency of this automated platform. Varying the flow rate ramping shows that accurate kinetic determination requires a specific range of flow rate ramps. A kinetic curve of conversion versus residence time (more than ten thousand data points) can be obtained in a single experiment within 50 min. The kinetic parameters obtained with this strategy agree well with literature values. The automated flow platform with flow rate ramping enables accurate determination of gas–liquid–solid reaction kinetics with higher efficiency and lower reagent cost compared with other methods. National Natural Science Foundation of China (21978146) Natural Science Foundation of China (21991103) Tsinghua University Initiative Scientific Research Program (2019Z08QCX02) 2020-09-22T20:44:31Z 2020-09-22T20:44:31Z 2020-07 2020-05 2020-09-18T18:09:41Z Article http://purl.org/eprint/type/JournalArticle 2058-9883 https://hdl.handle.net/1721.1/127680 Duan, Xiaonan et al., "An automated flow platform for accurate determination of gas–liquid–solid reaction kinetics." Reaction Chemistry & Engineering 5, 9 (September 2020): 1751-1758 doi. 10.1039/D0RE00191K ©2020 Authors en https://dx.doi.org/10.1039/d0re00191k Reaction Chemistry & Engineering Creative Commons Attribution 3.0 unported license https://creativecommons.org/licenses/by/3.0/ application/pdf Royal Society of Chemistry (RSC) Royal Society of Chemistry (RSC) |
| spellingShingle | Duan, Xiaonan Tu, Jiacheng Teixeira, Andrew R. Sang, Le Jensen, Klavs F. Zhang, Jisong An automated flow platform for accurate determination of gas–liquid–solid reaction kinetics |
| title | An automated flow platform for accurate determination of gas–liquid–solid reaction kinetics |
| title_full | An automated flow platform for accurate determination of gas–liquid–solid reaction kinetics |
| title_fullStr | An automated flow platform for accurate determination of gas–liquid–solid reaction kinetics |
| title_full_unstemmed | An automated flow platform for accurate determination of gas–liquid–solid reaction kinetics |
| title_short | An automated flow platform for accurate determination of gas–liquid–solid reaction kinetics |
| title_sort | automated flow platform for accurate determination of gas liquid solid reaction kinetics |
| url | https://hdl.handle.net/1721.1/127680 |
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