دورية أكاديمية
Comparative Catalytic Performance Study of 12-Tungstophosphoric Heteropoly Acid Supported on Mesoporous Supports for Biodiesel Production from Unrefined Green Seed Canola Oil
| العنوان: | Comparative Catalytic Performance Study of 12-Tungstophosphoric Heteropoly Acid Supported on Mesoporous Supports for Biodiesel Production from Unrefined Green Seed Canola Oil |
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| المؤلفون: | Fahimeh Esmi, Shima Masoumi, Ajay K. Dalai |
| المصدر: | Catalysts, Vol 12, Iss 6, p 658 (2022) |
| بيانات النشر: | MDPI AG, 2022. |
| سنة النشر: | 2022 |
| المجموعة: | LCC:Chemical technology LCC:Chemistry |
| مصطلحات موضوعية: | biodiesel, solid acid catalyst, heteropoly acid, reusability, unrefined canola oil, Chemical technology, TP1-1185, Chemistry, QD1-999 |
| الوصف: | In this study, three solid acid catalysts, namely mesoporous aluminophosphate-supported 12-tungstophosphoric heteropoly acid (HPW/MAP), mesoporous aluminosilicate-supported 12-tungstophosphoric heteropoly acid (HPW/MAS), and gamma alumina-supported 12-tungstophosphoric heteropoly acid (HPW/γ-Al2O3) were prepared and characterized. Mesoporous aluminophosphate (MAP) and mesoporous aluminosilicate (MAS) were synthesized via sol-gel and hydrothermal methods, respectively, and 25 wt.% of 12-tungstophosphoric heteropoly acid (HPW) was immobilized on the support materials using the wet impregnation method. The features of the fabricated catalysts were comprehensively investigated using various techniques such as BET, XRD, NH3-TPD, TGA, and TEM. The surface area of the supported catalysts decreased after HPW impregnation according to BET results, which indicates that HPW loaded on the supports and inside of their pores successfully. The density and strengths of the acid sites of the support materials and the catalysts before reaction and after regeneration were determined by the NH3-TPD technique. Accordingly, an increase in acidity was observed after HPW immobilization on all the support materials. The catalytic performance of the catalysts was studied through alcoholysis reaction using unrefined green seed canola oil as the feedstock. The maximum biodiesel yield of 82.3% was obtained using 3 wt.% of HPW/MAS, with a methanol to oil molar ratio of 20:1, at 200 °C and 4 MPa over 7 h. The reusability study of HPW/MAS showed that it can maintain 80% of its initial activity after five runs. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 12060658 2073-4344 |
| Relation: | https://www.mdpi.com/2073-4344/12/6/658; https://doaj.org/toc/2073-4344 |
| DOI: | 10.3390/catal12060658 |
| URL الوصول: | https://doaj.org/article/6746b36455ce4f30baf8cfc8d0f56525 |
| رقم الأكسشن: | edsdoj.6746b36455ce4f30baf8cfc8d0f56525 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 12060658 20734344 |
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| DOI: | 10.3390/catal12060658 |