Engineering Calculations for Catalytic Hydrolysis of CF<sub>4</sub>
Tetrafluoromethane (CF<sub>4</sub>) is the simplest perfluorocarbon, a class of compounds with very high greenhouse gas potential. Catalytic hydrolysis offers an opportunity to convert these compounds to manageable CO<sub>2</sub> and HF. Recently published data showed the eff...
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MDPI AG
2025-01-01
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| author | Robert Barat |
| author_facet | Robert Barat |
| author_sort | Robert Barat |
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| description | Tetrafluoromethane (CF<sub>4</sub>) is the simplest perfluorocarbon, a class of compounds with very high greenhouse gas potential. Catalytic hydrolysis offers an opportunity to convert these compounds to manageable CO<sub>2</sub> and HF. Recently published data showed the effectiveness of Ga-doping to overcome the fluorine poisoning of various Al<sub>2</sub>O<sub>3</sub> catalysts at relatively modest temperatures. This prior work offered a partial catalytic mechanism together with kinetic and conversion data. The current paper completes the catalytic mechanism, and then analyzes it using the Langmuir–Hinshelwood algorithm for both the initial CF<sub>4</sub> conversion, and the catalyst site regeneration. The resulting derived rate expression, together with a catalyst activity coefficient expression, are then used in flow reactor configurations to simulate both relatively short exposure time runs with little loss of activity, as well as longer runs with severe activity loss. The reasonable agreement with the published laboratory data suggests that these expressions can be used for a larger-scale practical reactor design. |
| format | Article |
| id | doaj-art-d73d8a49db724d3085f440ce280946c0 |
| institution | DOAJ |
| issn | 2305-7084 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | MDPI AG |
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| series | ChemEngineering |
| spelling | doaj-art-d73d8a49db724d3085f440ce280946c02025-08-20T02:44:49ZengMDPI AGChemEngineering2305-70842025-01-01911010.3390/chemengineering9010010Engineering Calculations for Catalytic Hydrolysis of CF<sub>4</sub>Robert Barat0Department of Chemical and Materials Engineering, New Jersey Institute of Technology, Newark, NJ 07102, USATetrafluoromethane (CF<sub>4</sub>) is the simplest perfluorocarbon, a class of compounds with very high greenhouse gas potential. Catalytic hydrolysis offers an opportunity to convert these compounds to manageable CO<sub>2</sub> and HF. Recently published data showed the effectiveness of Ga-doping to overcome the fluorine poisoning of various Al<sub>2</sub>O<sub>3</sub> catalysts at relatively modest temperatures. This prior work offered a partial catalytic mechanism together with kinetic and conversion data. The current paper completes the catalytic mechanism, and then analyzes it using the Langmuir–Hinshelwood algorithm for both the initial CF<sub>4</sub> conversion, and the catalyst site regeneration. The resulting derived rate expression, together with a catalyst activity coefficient expression, are then used in flow reactor configurations to simulate both relatively short exposure time runs with little loss of activity, as well as longer runs with severe activity loss. The reasonable agreement with the published laboratory data suggests that these expressions can be used for a larger-scale practical reactor design.https://www.mdpi.com/2305-7084/9/1/10hydrolysiscatalysttetrafluoromethanealuminagalliumreactor |
| spellingShingle | Robert Barat Engineering Calculations for Catalytic Hydrolysis of CF<sub>4</sub> ChemEngineering hydrolysis catalyst tetrafluoromethane alumina gallium reactor |
| title | Engineering Calculations for Catalytic Hydrolysis of CF<sub>4</sub> |
| title_full | Engineering Calculations for Catalytic Hydrolysis of CF<sub>4</sub> |
| title_fullStr | Engineering Calculations for Catalytic Hydrolysis of CF<sub>4</sub> |
| title_full_unstemmed | Engineering Calculations for Catalytic Hydrolysis of CF<sub>4</sub> |
| title_short | Engineering Calculations for Catalytic Hydrolysis of CF<sub>4</sub> |
| title_sort | engineering calculations for catalytic hydrolysis of cf sub 4 sub |
| topic | hydrolysis catalyst tetrafluoromethane alumina gallium reactor |
| url | https://www.mdpi.com/2305-7084/9/1/10 |
| work_keys_str_mv | AT robertbarat engineeringcalculationsforcatalytichydrolysisofcfsub4sub |