Enhancement of biodiesel production via sequential esterification/transesterification over solid superacidic and superbasic catalysts

doi:10.1016/j.cattod.2019.09.037

機構典藏 > College of Engineering > Graduate Institute & Department of Chemical and Materials Engineering > Journal Article > Item 987654321/127392

Please use this identifier to cite or link to this item: https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/127392

Title:	Enhancement of biodiesel production via sequential esterification/transesterification over solid superacidic and superbasic catalysts
Authors:	Chiang, Chao-Lung;Lin, Kuen-Song;Shu, Chia-Wei;Wu, Jeffrey Chi-Sheng;Wu, Kevin Chia-Wen;Huang, Yu-Tzu
Keywords:	Biodiesel Producion, Superacidic/Superbasic Catalysts, Esterification/Transesterification, XANES/EXAFS
Date:	2020/5/15
Issue Date:	2025-06-04 12:05:13 (UTC+8)
Publisher:	Elsevier
Abstract:	Recently, biodiesel can be produced from energy crops and has been recognized as an ideal candidate for satisfying the global energy demand. Owing to its fossil-fuel-similar physicochemical properties, biodiesel is also regarded as an alternative fuel for various applications. In present work, soybean oil with added fatty free acid (FFA; palmitic acid, 5.0 wt%) was converted to biodiesel via a two-step process in a catalytic fixed-bed batch reactor with SO42–/ZrO2/Al2O3, KF/CaO–Fe3O4, and Na/NaOH/Al2O3 catalysts. A solid superacidic (SO42–/ZrO2/Al2O3: 0.1–1.5 M H2SO4) and two solid superbasic (KF/CaO–Fe3O4, 5–25 wt% KF; Na/NaOH/Al2O3, 10–25 wt% NaOH) catalysts were fabricated using calcination at 300–700 °C and 200–700 °C, respectively. Notably, the FFA removal efficiency of SO42–/ZrO2/Al2O3 (80.0%) was much higher than that of commercial Amberlyst IR 120 (30.0%) in a 3-h reaction. Optimal biodiesel yields were obtained using KF/CaO–Fe3O4 (83.0%) and Na/NaOH/Al2O3 (100.0%). Catalytic reaction mechanisms of the conversion of soybean oil with FFA into biodiesel using solid superacidic and superbasic catalysts were also proposed. The FFA and soybean oil were converted to biodiesel over the superacidic and superbasic catalysts, respectively.
Relation:	Catalysis Today 348, 257-269
DOI:	10.1016/j.cattod.2019.09.037
Appears in Collections:	[Graduate Institute & Department of Chemical and Materials Engineering] Journal Article

Files in This Item:

File	Description	Size	Format
index.html		0Kb	HTML	3	View/Open

Loading...