Kinetic modeling, thermodynamic, and mass-transfer studies of gas-phase glycerol dehydration to acrolein over supported silicotungstic acid catalyst
The kinetics of gas-phase glycerol dehydration in a packed-bed reactor over a highly active and stable supported silicotungstic acid catalyst with zirconium oxide and nanosized aluminum oxide (30HZ-20A) was investigated. The kinetic study is based on the optimal reaction conditions determined by res...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Published: |
American Chemical Society
2015
|
| Subjects: |
| _version_ | 1796860513442856960 |
|---|---|
| author | Kiakalaieh, Talebian Saidina Amin, Nor Aishah |
| author_facet | Kiakalaieh, Talebian Saidina Amin, Nor Aishah |
| author_sort | Kiakalaieh, Talebian |
| collection | ePrints |
| description | The kinetics of gas-phase glycerol dehydration in a packed-bed reactor over a highly active and stable supported silicotungstic acid catalyst with zirconium oxide and nanosized aluminum oxide (30HZ-20A) was investigated. The kinetic study is based on the optimal reaction conditions determined by response surface methodology. The reaction rate followed first-order kinetics with the activation energy and frequency factor, E = 27.5 kJ/mol and A = 5.35 × 105 s-1, respectively. Based on thermodynamic analysis, the values of ΔH° and ΔS° of the endothermic reaction were 14.70 and 0.09 kJ/(mol K), respectively, and ΔG° =-12.12 kJ/mol. The mass-transfer analysis revealed the pellet sizes of dp < 1 µm proceeded under reaction-limiting conditions. Experimental results confirmed high efficacy of the tested catalyst due to unity effectiveness factor and very low Thiele modulus |
| first_indexed | 2024-03-05T19:42:29Z |
| format | Article |
| id | utm.eprints-58462 |
| institution | Universiti Teknologi Malaysia - ePrints |
| last_indexed | 2024-03-05T19:42:29Z |
| publishDate | 2015 |
| publisher | American Chemical Society |
| record_format | dspace |
| spelling | utm.eprints-584622017-02-01T01:40:38Z http://eprints.utm.my/58462/ Kinetic modeling, thermodynamic, and mass-transfer studies of gas-phase glycerol dehydration to acrolein over supported silicotungstic acid catalyst Kiakalaieh, Talebian Saidina Amin, Nor Aishah TP Chemical technology The kinetics of gas-phase glycerol dehydration in a packed-bed reactor over a highly active and stable supported silicotungstic acid catalyst with zirconium oxide and nanosized aluminum oxide (30HZ-20A) was investigated. The kinetic study is based on the optimal reaction conditions determined by response surface methodology. The reaction rate followed first-order kinetics with the activation energy and frequency factor, E = 27.5 kJ/mol and A = 5.35 × 105 s-1, respectively. Based on thermodynamic analysis, the values of ΔH° and ΔS° of the endothermic reaction were 14.70 and 0.09 kJ/(mol K), respectively, and ΔG° =-12.12 kJ/mol. The mass-transfer analysis revealed the pellet sizes of dp < 1 µm proceeded under reaction-limiting conditions. Experimental results confirmed high efficacy of the tested catalyst due to unity effectiveness factor and very low Thiele modulus American Chemical Society 2015-08 Article PeerReviewed Kiakalaieh, Talebian and Saidina Amin, Nor Aishah (2015) Kinetic modeling, thermodynamic, and mass-transfer studies of gas-phase glycerol dehydration to acrolein over supported silicotungstic acid catalyst. Industrial & Engineering Chemistry Research, 54 (33). pp. 8113-8121. ISSN 0886-7798 http://dx.doi.org/10.1021/acs.iecr.5b02172 DOI:10.1021/acs.iecr.5b02172 |
| spellingShingle | TP Chemical technology Kiakalaieh, Talebian Saidina Amin, Nor Aishah Kinetic modeling, thermodynamic, and mass-transfer studies of gas-phase glycerol dehydration to acrolein over supported silicotungstic acid catalyst |
| title | Kinetic modeling, thermodynamic, and mass-transfer studies of gas-phase glycerol dehydration to acrolein over supported silicotungstic acid catalyst |
| title_full | Kinetic modeling, thermodynamic, and mass-transfer studies of gas-phase glycerol dehydration to acrolein over supported silicotungstic acid catalyst |
| title_fullStr | Kinetic modeling, thermodynamic, and mass-transfer studies of gas-phase glycerol dehydration to acrolein over supported silicotungstic acid catalyst |
| title_full_unstemmed | Kinetic modeling, thermodynamic, and mass-transfer studies of gas-phase glycerol dehydration to acrolein over supported silicotungstic acid catalyst |
| title_short | Kinetic modeling, thermodynamic, and mass-transfer studies of gas-phase glycerol dehydration to acrolein over supported silicotungstic acid catalyst |
| title_sort | kinetic modeling thermodynamic and mass transfer studies of gas phase glycerol dehydration to acrolein over supported silicotungstic acid catalyst |
| topic | TP Chemical technology |
| work_keys_str_mv | AT kiakalaiehtalebian kineticmodelingthermodynamicandmasstransferstudiesofgasphaseglyceroldehydrationtoacroleinoversupportedsilicotungsticacidcatalyst AT saidinaaminnoraishah kineticmodelingthermodynamicandmasstransferstudiesofgasphaseglyceroldehydrationtoacroleinoversupportedsilicotungsticacidcatalyst |