title: Biodiesel production using cation-exchange resin as heterogeneous catalyst.
abstract: Three types of cation-exchange resins (NKC-9, 001 x 7 and D61) as solid acid catalysts were employed to prepare biodiesel from acidified oils generated from waste frying oils. The results show that the catalytic activity of NKC-9 was higher than that of 001 x 7 and D61. The conversion of the esterification by NKC-9 increased with increasing in the amount of catalyst, reaction temperature and time and methanol/oil molar ratio. The maximal conversion of reaction is approximately 90.0%. Furthermore, NKC-9 resin exhibits good reusability. Gas chromatography-mass spectrometry analysis reveals that the production is simplex and mainly composed of C16:0 (palmitic), C18:2 (linoleic), and C18:1 (oleic) acids of methyl ester, respectively.
authors.affiliation: Key Lab of Hollow Fiber Membrane Material and Processes of Ministry of Education, School of Material Science and Engineering, Tianjin Polytechnical University, Tianjin 300160, PR China.
authors.forename: Yaohui
authors.initials: Y
authors.lastname: Feng
authors.forename: Benqiao
authors.initials: B
authors.lastname: He
authors.forename: Yuhe
authors.initials: Y
authors.lastname: Cao
authors.forename: Jianxin
authors.initials: J
authors.lastname: Li
authors.forename: Meng
authors.initials: M
authors.lastname: Liu
authors.forename: Feng
authors.initials: F
authors.lastname: Yan
authors.forename: Xiaoping
authors.initials: X
authors.lastname: Liang
mesh_terms: D056804:Biofuels; D002384:Catalysis; D002411:Cation Exchange Resins / Q000737:chemistry*; D003247:Conservation of Natural Resources; D005227:Fatty Acids / Q000737:chemistry; D013058:Mass Spectrometry; D000432:Methanol / Q000737:chemistry; D009821:Oils / Q000737:chemistry; D013696:Temperature; D013997:Time Factors
chemical_list: D056804:Biofuels; D002411:Cation Exchange Resins; D005227:Fatty Acids; D009821:Oils; D000432:Methanol