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Biodiesel Production Using a Carbon Solid Acid Catalyst Derived from β‐Cyclodextrin
Author(s) -
Fu Xiaobo,
Chen Jie,
Song Xueli,
Zhang Yuanming,
Zhu Yi,
Yang Jun,
Zhang Chengwu
Publication year - 2015
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/s11746-015-2621-8
Subject(s) - transesterification , catalysis , biodiesel production , chemistry , biodiesel , organic chemistry , sulfuric acid , oleic acid , hydrothermal carbonization , carbonization , carbon fibers , materials science , biochemistry , adsorption , composite number , composite material
A novel carbon solid acid catalyst was prepared by incomplete hydrothermal carbonization of β‐cyclodextrin into small polycyclic aromatic carbon sheets, followed by the introduction of –SO 3 H groups via sulfonation with sulfuric acid. The physical and chemical properties of the catalyst were characterized in detail. The catalyst simultaneously catalyzed esterification and transesterification reactions to produce biodiesel from high free fatty acid (FFA) containing oils (55.2 %). For the as‐prepared catalyst, 90.82 % of the oleic acid was esterified after 8 h, while the total transesterification yield of high FFA containing oils reached 79.98 % after 12 h. By contrast, the obtained catalyst showed comparable activity to biomass (such as sugar, starch, etc.)‐based carbon solid acid catalyst while Amberlyst‐15 resulted in significantly lower levels of conversion, demonstrating its relatively high catalytic activity for simultaneous esterification and transesterification. Moreover, as the catalyst can be regenerated, it has the potential for use in biodiesel production from oils with a high FFA content.