Kühl, Frank G. (2018)
Adsorption of sulfur dioxide in carbon nanotubes - gravimetric experiment and molecular dynamics simulation.
Technische Universität Darmstadt
Ph.D. Thesis, Primary publication
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Item Type: | Ph.D. Thesis | ||||
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Type of entry: | Primary publication | ||||
Title: | Adsorption of sulfur dioxide in carbon nanotubes - gravimetric experiment and molecular dynamics simulation | ||||
Language: | English | ||||
Referees: | Hampe, Prof. Manfred J. ; Schneider, Prof. Jörg J. | ||||
Date: | 2018 | ||||
Place of Publication: | Darmstadt | ||||
Date of oral examination: | 4 July 2018 | ||||
Abstract: | In this work, isothermal adsorption of sulfur dioxide (SO2) and nitrogen (N2) at carbon nanotubes (CNTs) is studied in molecular dynamics simulation and gravimetric experiments in the temperature range from 0°C to 125°C and the pressure range from vacuum to 80bar. The results are compared to each other and are in good agreement if the simulational data is adjusted by a scaling factor which is tied to the BET surface area of the respective CNTs. In simulation, single-walled CNTs in a diameter range of 1.48nm to 10.77nm are regarded. Additionally, graphene was simulated in the two gas atmospheres. For a CNT(20/20) mixtures of SO2 and N2 were also studied and show a high attraction for SO2. Adsorption experiments with multi-walled CNTs, single-walled CNTs and vertically aligned CNTs in SO2 show adsorbed amounts up to 22.7mmol/g. For N2 experiments the adsorbed amount is up to 1.49 mmol/g. From the adsorption isotherms heats of adsorption are derived. For SO2 data the heats of adsorption are in the range between 18 and 30 kJ/mol. For N2 data the heats of adsorption are in the range between 9 and 19kJ/mol. Evaluations of adsorption isotherms from simulation deliver comparable heats of adsorption. |
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URN: | urn:nbn:de:tuda-tuprints-81047 | ||||
Classification DDC: | 600 Technology, medicine, applied sciences > 620 Engineering and machine engineering | ||||
Divisions: | 16 Department of Mechanical Engineering 16 Department of Mechanical Engineering > Chair of Thermal Process Engineering (TVT) 16 Department of Mechanical Engineering > Chair of Thermal Process Engineering (TVT) > Adsorption of gases on porous media |
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Date Deposited: | 13 Dec 2018 10:36 | ||||
Last Modified: | 09 Jul 2020 02:22 | ||||
URI: | https://tuprints.ulb.tu-darmstadt.de/id/eprint/8104 | ||||
PPN: | 439973848 | ||||
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