Biodiesel production from esterification of oleic acid by a sulfonated magnetic solid acid catalyst
| Autor: | Jie Xu, Jing-Long Liang, Zhang Lei, Wang Zibing, Hong-Li Wang, Yi-Tong Wang, Xing-Xia Yang, Shao-Long Wang |
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| Rok vydání: | 2019 |
| Předmět: |
Biodiesel
060102 archaeology Renewable Energy Sustainability and the Environment 020209 energy 06 humanities and the arts 02 engineering and technology Catalysis Oleic acid chemistry.chemical_compound Magnetization chemistry Catalytic cycle Biodiesel production Yield (chemistry) 0202 electrical engineering electronic engineering information engineering 0601 history and archaeology Titration Nuclear chemistry |
| Zdroj: | Renewable Energy. 139:688-695 |
| ISSN: | 0960-1481 |
| DOI: | 10.1016/j.renene.2019.02.111 |
| Popis: | Novel sulfonated magnetic solid acid catalysts (ZrFe-SA-SO3H) with both Bronsted and Lewis sites were synthesized, which provided both a high density of surface acidity (4.4–8.4 mmol/g) and considerable magnetization (3.7–8.1 Am2/kg). The synthesized catalysts were characterized by elemental analysis, XRD, ICP-OES, FT-IR, BET, SEM-EDX, TEM, TG-DSC, VSM and Boehm titration. The prepared catalysts were tested in the esterification of oleic acid, with high yields of biodiesel (92.7–99.5%) for the first catalytic cycle at 90 °C for 4 h. A High biodiesel yield of 90.3% was still achieved after five cycles of Zr1.0Fe1.0-SA-SO3H. A similar situation was also observed when using sodium carboxymethylcellulose (CMC) to replace SA during catalyst preparation. |
| Databáze: | OpenAIRE |
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