Efficiently and directly produce triacetylglycerol from oils and fats over mesoporous polymeric solid acid catalysts

Lijuan Su, Xiaojie Shao, Lin Chai, Hui Ge, Hongliang Wang, Xiaojing Cui, Tiansheng Deng and Xianglin Hou

Renewable Energy, 2022, vol. 197, issue C, 432-442

Abstract: A series of mesoporous solid acid catalysts (PDS-x) with large BET surface area, superior thermal stability, strong sulfonic acid groups and tunable Brønsted acidity were synthesized by the copolymerization of divinylbenzene (DVB) and sodium p-styrenesulfonate (SPSS). The PDS-x catalysts showed high activity on the direct and efficient production of triacetylglycerol (TAG) via acyl exchange reaction of oils (fats) and acetic acid. The highest TAG yield of 93.0 mol% was obtained on the PDS-x catalysts at a mild condition of 200 °C. By combining SEM, TEM, FT-IR/DRIFTS, BET, XRD, XPS, EA, 31P MAS NMR and TG-DTG, the key factors that affected the TAG yield were clarified on the PDS-x catalysts. Moreover, the origin of the slow deactivation on these catalysts was elucidated. The large BET surface area and abundant mesopores of catalysts allowed the contact of large-sized oils (fats) with the strong sulfonic acid groups, accounting for the high TAG yield.

Keywords: Polymeric solid acid; Triacetylglycerol; Oil; Fat; Acetic acid (search for similar items in EconPapers)
Date: 2022
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Citations: View citations in EconPapers (1)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:197:y:2022:i:c:p:432-442

DOI: 10.1016/j.renene.2022.07.063

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