期刊
CATALYSIS TODAY
卷 397, 期 -, 页码 145-154出版社
ELSEVIER
DOI: 10.1016/j.cattod.2021.11.017
关键词
Polymer-based solid acidic catalyst; Biodiesel; Esterification; Transesterification; Fatty free acid removal
资金
- Ministry of Science and Technology (MOST) , Taiwan [MOST 105-2622-E-155-013-CC2]
The hydrophobic and spherical PDVB-x-MeCN catalyst with high contact angles (> 124.0°) was synthesized and was found to be most effective for the removal of free fatty acids (FFA) and production of biodiesel. The FFA removal and biodiesel yield reached 83.2% and 83.3%, respectively, after a 6-hour transesterificationesterification process using PDVB-0.5-MeCN as catalyst.
The hydrophobic and spherical PDVB-x-MeCN (x: molar ratio of p-styrene sulfonate/divinylbenzene; x = 0.0, 0.1, 0.3, 0.5, and 1.0) catalyst was synthesized via polymerization and the ion-exchange process. Moreover, the hydrophobic property of PDVB-x-MeCN with high contact angles (> 124.0 & LCIRC;) was directly observed with a contact angle analyzer. The most appropriate x value of PDVB-x-MeCN for free fatty acid (FFA) removal and biodiesel production was 0.5, which was identified with gas chromatography (GC). During a 6-h transesterificationesterification, FFA removal and biodiesel yield of PDVB-0.5-MeCN reached 83.2% and 83.3%, respectively, at a ratio 45/1 (v/v) of methanol/palmitic acid mixture, approaching that of the Amberlyst 15 ones (83.4%). On the basis of these results, waste oils containing FFA can be transesterified efficiently from triglycerides and FFA into biodiesel.
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