Nanostructured sodium–zeolite imidazolate framework (ZIF-8) doped with potassium by sol–gel processing for biodiesel production from soybean oil
| Autor: | Mandana Saeedi, Hamid Aliyan, Razieh Fazaeli |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
food.ingredient
Materials science Inorganic chemistry 02 engineering and technology 010402 general chemistry 01 natural sciences Soybean oil Catalysis Biomaterials chemistry.chemical_compound food Materials Chemistry Zeolite Biodiesel General Chemistry Transesterification 021001 nanoscience & nanotechnology Condensed Matter Physics 0104 chemical sciences Electronic Optical and Magnetic Materials Vegetable oil chemistry Biodiesel production Ceramics and Composites Methanol 0210 nano-technology Nuclear chemistry |
| Zdroj: | Journal of Sol-Gel Science and Technology. 77:404-415 |
| ISSN: | 1573-4846 0928-0707 |
| DOI: | 10.1007/s10971-015-3867-1 |
| Popis: | Zeolite imidazolate framework (ZIF-8) doped with potassium (KNa/ZIF-8) was prepared under hydrothermal conditions. FTIR, powder XRD, scanning electron microscopy, N2 physisorption and TGA were used to characterize synthesized catalysts. Furthermore, biodiesel was synthesized using soybean oil as the feedstock by KNa/ZIF-8-catalyzed transesterification process. In order to increase the basicity and consequently improve the performance of ZIF-8 in the transesterification of soybean oil with methanol, sodium and potassium were added to it. The effect of various reaction parameters, including methanol/oil molar ratio, reaction, catalyst mass and temperature on the reaction, was studied. Using KNa/ZIF-8 and methanol/oil molar ratio of 10:1 over a period of 3.5 h afforded a remarkable conversion of >98. The solid catalyst can be recycled least three times under mild conditions. KNa/ZIF-8 demonstrated higher activity in the transesterification of soybean oil compared with Na and K (as dopant) modifications on the conventional support (SiO2) and other MOF (MIL-101 and MIL-100) materials. |
| Databáze: | OpenAIRE |
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