Micro-Reactor System for Complete Oxidation of Volatile Organic Compounds
Based on previous Computational Fluid Dynamics (CFD) design results, an 11 channel microreactor of dimensions (0.5 mm × 0.5 mm × 100 mm) (width × depth × length) and optimal manifold geometry was fabricated, coated with a newly-developed Au/SBA-15 catalyst and then integrated in an experimental rig...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-07-01
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| Series: | Catalysts |
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| Online Access: | https://www.mdpi.com/2073-4344/10/8/846 |
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| author | Sunday Odiba Maria Olea Takehiko Sasaki Emmanuel Iro Simon Hodgson Adam Adgar Paul Russell |
| author_facet | Sunday Odiba Maria Olea Takehiko Sasaki Emmanuel Iro Simon Hodgson Adam Adgar Paul Russell |
| author_sort | Sunday Odiba |
| collection | DOAJ |
| description | Based on previous Computational Fluid Dynamics (CFD) design results, an 11 channel microreactor of dimensions (0.5 mm × 0.5 mm × 100 mm) (width × depth × length) and optimal manifold geometry was fabricated, coated with a newly-developed Au/SBA-15 catalyst and then integrated in an experimental rig specifically built for this research. Propane (as model volatile organic compound) oxidation experiments were conducted at three different flow velocities, 12.5, 15.4 and 17.5 m/min, respectively, at six temperatures, 150, 200, 225, 250, 275, and 300 °C, respectively. The catalyst was prepared by one-pot sol-gel synthesis of SBA-15 with MPTMS (3-mercaptopropyl-trimethoxy-silane) before loading with HAuCl<sub>4</sub> gold precursor and then characterized by SEM/EDX, TEM and wide angle XRD. A novel catalyst coating technique was developed, using airbrush (0.3 nozzle) to spray a catalyst slurry into the microchannels that produced a thin, firm and uniform layer of Au/SBA-15 catalyst coating inside the microreactor. The experimental measurements revealed that propane conversion increased as the flow feed rates decreased and increased with increasing temperatures in the reactor. For the built microreactor and for the flows and temperatures set, the combustion of propane was possible with measurable conversions and reasonable reactor stability, the performance of the catalyst appeared to be central to the satisfactory operation of the reactor. |
| first_indexed | 2024-03-10T18:09:51Z |
| format | Article |
| id | doaj.art-28e663de7cbe4780ad19f6836f505fd2 |
| institution | Directory Open Access Journal |
| issn | 2073-4344 |
| language | English |
| last_indexed | 2024-03-10T18:09:51Z |
| publishDate | 2020-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Catalysts |
| spelling | doaj.art-28e663de7cbe4780ad19f6836f505fd22023-11-20T08:10:55ZengMDPI AGCatalysts2073-43442020-07-0110884610.3390/catal10080846Micro-Reactor System for Complete Oxidation of Volatile Organic CompoundsSunday Odiba0Maria Olea1Takehiko Sasaki2Emmanuel Iro3Simon Hodgson4Adam Adgar5Paul Russell6Redcar and Cleveland College, Corporation Rd, Redcar TS10 1EZ, UKSchool of Science, Engineering and Design, Teesside University, Tees Valley, Middlesbrough TS1 3BX, UKGraduate School of Frontier Sciences, The University of Tokyo, 5-1-5, Kashiwanoha, Kashiwa, Chiba 277-8561, JapanSchool of Science, Engineering and Design, Teesside University, Tees Valley, Middlesbrough TS1 3BX, UKSchool of Science, Engineering and Design, Teesside University, Tees Valley, Middlesbrough TS1 3BX, UKSchool of Science, Engineering and Design, Teesside University, Tees Valley, Middlesbrough TS1 3BX, UKSchool of Science, Engineering and Design, Teesside University, Tees Valley, Middlesbrough TS1 3BX, UKBased on previous Computational Fluid Dynamics (CFD) design results, an 11 channel microreactor of dimensions (0.5 mm × 0.5 mm × 100 mm) (width × depth × length) and optimal manifold geometry was fabricated, coated with a newly-developed Au/SBA-15 catalyst and then integrated in an experimental rig specifically built for this research. Propane (as model volatile organic compound) oxidation experiments were conducted at three different flow velocities, 12.5, 15.4 and 17.5 m/min, respectively, at six temperatures, 150, 200, 225, 250, 275, and 300 °C, respectively. The catalyst was prepared by one-pot sol-gel synthesis of SBA-15 with MPTMS (3-mercaptopropyl-trimethoxy-silane) before loading with HAuCl<sub>4</sub> gold precursor and then characterized by SEM/EDX, TEM and wide angle XRD. A novel catalyst coating technique was developed, using airbrush (0.3 nozzle) to spray a catalyst slurry into the microchannels that produced a thin, firm and uniform layer of Au/SBA-15 catalyst coating inside the microreactor. The experimental measurements revealed that propane conversion increased as the flow feed rates decreased and increased with increasing temperatures in the reactor. For the built microreactor and for the flows and temperatures set, the combustion of propane was possible with measurable conversions and reasonable reactor stability, the performance of the catalyst appeared to be central to the satisfactory operation of the reactor.https://www.mdpi.com/2073-4344/10/8/846microreactorCFDVOCsAu/SBA-15 catalystpropanecomplete oxidation |
| spellingShingle | Sunday Odiba Maria Olea Takehiko Sasaki Emmanuel Iro Simon Hodgson Adam Adgar Paul Russell Micro-Reactor System for Complete Oxidation of Volatile Organic Compounds Catalysts microreactor CFD VOCs Au/SBA-15 catalyst propane complete oxidation |
| title | Micro-Reactor System for Complete Oxidation of Volatile Organic Compounds |
| title_full | Micro-Reactor System for Complete Oxidation of Volatile Organic Compounds |
| title_fullStr | Micro-Reactor System for Complete Oxidation of Volatile Organic Compounds |
| title_full_unstemmed | Micro-Reactor System for Complete Oxidation of Volatile Organic Compounds |
| title_short | Micro-Reactor System for Complete Oxidation of Volatile Organic Compounds |
| title_sort | micro reactor system for complete oxidation of volatile organic compounds |
| topic | microreactor CFD VOCs Au/SBA-15 catalyst propane complete oxidation |
| url | https://www.mdpi.com/2073-4344/10/8/846 |
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