Effect of Synthesized Conditions of Cu-K-OMS-2 on Toluene Oxidation Performance
The objective of this study was to optimize synthesis conditions for the Cu-K-OMS-2 hydrothermal process. The effects of ageing temperature, ageing time and amount of copper (Cu) dopant were considered via using the Box-Behnken design (BBD) method to characterize the conditions for gaseous toluene...
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| Format: | Article |
| Language: | English |
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Environmental Research Institute, Chulalongkorn University
2019-12-01
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| Series: | Applied Environmental Research |
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| Online Access: | https://ph01.tci-thaijo.org/index.php/aer/article/view/216755 |
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| author | Chatkamol Kaewbuddee Narong Chanlek Kitirote Wantala |
| author_facet | Chatkamol Kaewbuddee Narong Chanlek Kitirote Wantala |
| author_sort | Chatkamol Kaewbuddee |
| collection | DOAJ |
| description |
The objective of this study was to optimize synthesis conditions for the Cu-K-OMS-2 hydrothermal process. The effects of ageing temperature, ageing time and amount of copper (Cu) dopant were considered via using the Box-Behnken design (BBD) method to characterize the conditions for gaseous toluene degradation. In the models studied, the independent variables were ageing temperature (55-145ºC), ageing time (6-18 h) and amount of Cu dopant (2-6% mole). The quadratic model fitted very well with the experimental data (15 runs), which showed a higher value of R2 (0.98) and adjusted R2 (0.95), confirming that the model can explain the results successfully. Ageing temperature was found to be the only significant variable for the Cu-K-OMS-2 transformation phase, with CuO and the bixbyite phase appearing as the highest ageing temperature condition. Furthermore, the effects of ageing temperature, ageing time and amount of Cu dopant on the Cu3+/Cu2+ mole ratio were also investigated. Ageing temperature and amount of Cu dopant displayed a significant effect on both toluene removal and the Cu3+/Cu2+ mole ratio. On the other hand, ageing time was not significant for both responses. The high Cu3+/Cu2+ mole ratio led to enhancement of toluene removal. The optimized conditions for Cu-K-OMS-2 synthesis were determined as 120ºC of ageing temperature, 6 h of ageing time and 6% by mole of Cu on K-OMS-2, which removed 80% of toluene at a reaction temperature of 180ºC.
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| first_indexed | 2024-03-08T01:50:26Z |
| format | Article |
| id | doaj.art-db235d139002422ab933def94b3ccbd7 |
| institution | Directory Open Access Journal |
| issn | 2287-075X |
| language | English |
| last_indexed | 2024-03-08T01:50:26Z |
| publishDate | 2019-12-01 |
| publisher | Environmental Research Institute, Chulalongkorn University |
| record_format | Article |
| series | Applied Environmental Research |
| spelling | doaj.art-db235d139002422ab933def94b3ccbd72024-02-14T10:49:52ZengEnvironmental Research Institute, Chulalongkorn UniversityApplied Environmental Research2287-075X2019-12-01413Effect of Synthesized Conditions of Cu-K-OMS-2 on Toluene Oxidation PerformanceChatkamol Kaewbuddee0Narong Chanlek1Kitirote Wantala2Faculty of Engineering, Khon Kaen University, Khon Kaen, ThailandSynchrotron Light Research Institute (Public Organization), Nakhon Ratchasima, ThailandFaculty of Engineering, Khon Kaen University, Khon Kaen, Thailand The objective of this study was to optimize synthesis conditions for the Cu-K-OMS-2 hydrothermal process. The effects of ageing temperature, ageing time and amount of copper (Cu) dopant were considered via using the Box-Behnken design (BBD) method to characterize the conditions for gaseous toluene degradation. In the models studied, the independent variables were ageing temperature (55-145ºC), ageing time (6-18 h) and amount of Cu dopant (2-6% mole). The quadratic model fitted very well with the experimental data (15 runs), which showed a higher value of R2 (0.98) and adjusted R2 (0.95), confirming that the model can explain the results successfully. Ageing temperature was found to be the only significant variable for the Cu-K-OMS-2 transformation phase, with CuO and the bixbyite phase appearing as the highest ageing temperature condition. Furthermore, the effects of ageing temperature, ageing time and amount of Cu dopant on the Cu3+/Cu2+ mole ratio were also investigated. Ageing temperature and amount of Cu dopant displayed a significant effect on both toluene removal and the Cu3+/Cu2+ mole ratio. On the other hand, ageing time was not significant for both responses. The high Cu3+/Cu2+ mole ratio led to enhancement of toluene removal. The optimized conditions for Cu-K-OMS-2 synthesis were determined as 120ºC of ageing temperature, 6 h of ageing time and 6% by mole of Cu on K-OMS-2, which removed 80% of toluene at a reaction temperature of 180ºC. https://ph01.tci-thaijo.org/index.php/aer/article/view/216755Cu3 /Cu2 ratiosVOC oxidationCryptomelaneHydrothermal conditionsXPS |
| spellingShingle | Chatkamol Kaewbuddee Narong Chanlek Kitirote Wantala Effect of Synthesized Conditions of Cu-K-OMS-2 on Toluene Oxidation Performance Applied Environmental Research Cu3 /Cu2 ratios VOC oxidation Cryptomelane Hydrothermal conditions XPS |
| title | Effect of Synthesized Conditions of Cu-K-OMS-2 on Toluene Oxidation Performance |
| title_full | Effect of Synthesized Conditions of Cu-K-OMS-2 on Toluene Oxidation Performance |
| title_fullStr | Effect of Synthesized Conditions of Cu-K-OMS-2 on Toluene Oxidation Performance |
| title_full_unstemmed | Effect of Synthesized Conditions of Cu-K-OMS-2 on Toluene Oxidation Performance |
| title_short | Effect of Synthesized Conditions of Cu-K-OMS-2 on Toluene Oxidation Performance |
| title_sort | effect of synthesized conditions of cu k oms 2 on toluene oxidation performance |
| topic | Cu3 /Cu2 ratios VOC oxidation Cryptomelane Hydrothermal conditions XPS |
| url | https://ph01.tci-thaijo.org/index.php/aer/article/view/216755 |
| work_keys_str_mv | AT chatkamolkaewbuddee effectofsynthesizedconditionsofcukoms2ontolueneoxidationperformance AT narongchanlek effectofsynthesizedconditionsofcukoms2ontolueneoxidationperformance AT kitirotewantala effectofsynthesizedconditionsofcukoms2ontolueneoxidationperformance |