Continuous-Flow Monolithic Silica Microreactors with Arenesulphonic Acid Groups: Structure–Catalytic Activity Relationships
| Autor: | Julita Mrowiec-Białoń, Janusz J. Malinowski, Agnieszka Ciemięga, Katarzyna Maresz |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
silica monoliths 02 engineering and technology lcsh:Chemical technology 010402 general chemistry 01 natural sciences Catalysis lcsh:Chemistry Chemical kinetics Acetic acid chemistry.chemical_compound continuous-flow microreactors Organic chemistry lcsh:TP1-1185 acid centres structure/catalytic activity relationships Physical and Theoretical Chemistry Porosity Packed bed Macropore 021001 nanoscience & nanotechnology 0104 chemical sciences lcsh:QD1-999 Chemical engineering chemistry Microreactor 0210 nano-technology Mesoporous material |
| Zdroj: | Catalysts; Volume 7; Issue 9; Pages: 255 Catalysts, Vol 7, Iss 9, p 255 (2017) |
| ISSN: | 2073-4344 |
| Popis: | The performance of monolithic silica microreactors activated with sulphonic acid groups and a packed bed reactor with Amberlyst 15 resin were compared in the esterification of acetic acid with n-butanol. The monolithic microreactors were made of single silica rods with complex pore architecture, differing in the size of mesopores, and in particular, flow-through macropores which significantly affected the flow characteristic of the continuous system. The highest ester productivity of 105.2 mol·molH+−1·h−1 was achieved in microreactor M1 with the largest porosity, characterized by a total pore volume of 4 cm3·g−1, mesopores with 20 nm diameter, and large flow-through macropores 30–50 μm in size. The strong impact of the permeability of the monoliths on a reaction kinetics was shown. |
| Databáze: | OpenAIRE |
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