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Esterification of oleic acid to biodiesel catalyzed by a highly acidic carbonaceous catalyst
Wang, Yi-Tong; Fang, Zhen1; Zhang, Fan1
2019
Source PublicationCATALYSIS TODAY
ISSN0920-5861
Volume319Issue:xPages:172-181
Abstract

Carbonaceous catalyst, with a variety of acid sites, was successfully synthesized by a two-step method at low temperature. The synthesized catalyst (Zr-SO3H@CMC) was characterized by elemental analysis, XRD, ICP-OES, FT-IR, BET, SEM-EDX and Boehm titration. It had high total acid content (8.45 mmol/g) for oleic acid esterification with high biodiesel yields (> 99%) at 40-90 degrees C. Under conditions of 90 degrees C, 20/1 methanol/oleic acid molar ratio, 5 wt% catalyst and 2 h reaction time, biodiesel yield of > 87% was achieved after 10 cycles of use. At lower temperatures (40, 50 and 60 degrees C), biodiesel yield still reached 82%, 93% and 90% after 3 cycles, respectively. The high activity of Zr-SO3H@CMC benefited from low activation energy of 24.7 KJ/mol. It shows potential application for esterification of free fatty acids or pretreatment of oils with high acid value for the green production of biodiesel.

KeywordFree Fatty-acid Heterogeneous Catalysts Efficient Catalyst Sulfated Zirconia Jatropha Oils Nonedible Oil Chicken Fat Transesterification Methanol Conversion
Subject AreaChemistry ; Engineering
DOI10.1016/j.cattod.2018.06.041
Indexed BySCI
Language英语
WOS IDWOS:000447156200022
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.xtbg.org.cn/handle/353005/11239
Collection生物能源研究组
Affiliation1.Nanjing Agr Univ, Coll Engn, Biomass Grp, 40 Dianjiangtai Rd, Nanjing 210031, Jiangsu, Peoples R China
2.Chinese Acad Sci, Key Lab Trop Plant Resources & Sustainable Use, Xishuangbanna Trop Bot Garden, 88 Xuefulu, Kunming 650223, Yunnan, Peoples R China
3.Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Wang, Yi-Tong,Fang, Zhen,Zhang, Fan. Esterification of oleic acid to biodiesel catalyzed by a highly acidic carbonaceous catalyst[J]. CATALYSIS TODAY,2019,319(x):172-181.
APA Wang, Yi-Tong,Fang, Zhen,&Zhang, Fan.(2019).Esterification of oleic acid to biodiesel catalyzed by a highly acidic carbonaceous catalyst.CATALYSIS TODAY,319(x),172-181.
MLA Wang, Yi-Tong,et al."Esterification of oleic acid to biodiesel catalyzed by a highly acidic carbonaceous catalyst".CATALYSIS TODAY 319.x(2019):172-181.
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