RTU Research Information System
Latviešu English

Publikācija: Properties of Rapeseed Oil Fatty Acid Alkyl Esters Derived from Different Alcohols

Publication Type Scientific article indexed in SCOPUS or WOS database
Funding for basic activity Unknown
Defending: ,
Publication language English (en)
Title in original language Properties of Rapeseed Oil Fatty Acid Alkyl Esters Derived from Different Alcohols
Field of research 1. Natural sciences
Sub-field of research 1.4 Chemical sciences
Authors Kristaps Māliņš
Valdis Kampars
Rūta Kampare
Jūlija Prilucka
Jānis Brinks
Raimonds Mūrnieks
Keywords Biodiesel; Rapeseed oil; Transesterification; Fatty acid alkyl esters with different alcohol moiety; Cold flow properties
Abstract One of the ways to improve the cold flow properties of biodiesel is to derive it from other alcohols instead of methanol. In this research a three step synthesis of fatty acid alkyl esters (FAAE) in the presence of sulfuric acid was performed via transesterification of rapeseed oil using 11 different linear or branched alcohols (C1C6) – methanol, ethanol, propan-1-ol, propan-2-ol, butan-1-ol, butan-2-ol, 2-methylpropan-1-ol, 2-methylbutan-1-ol, pentan-1-ol, 2,2-dimethylpropan-1-ol, 4-methylpentan-2-ol. Furthermore, a vacuum distillation was carried out to increase ester content over ⩾96.5 wt.%. It was concluded that an increase of the length of FAAE hydrocarbon chain in alcohol moiety significantly helps to improve the cold flow properties of FAAE distillates. From linear alcohols the minimal values of (cold filter plugging point (CFPP) −17 °C, cloud point (CP) −16 °C and pour point (PP) −18 °C were reached using FAAE derived from butan-1-ol. From branched alcohols the lowest CFPP −24 °C, CP −28 °C and PP −37 °C were achieved by obtaining FAAE from 4-methylpentan-2-ol.
DOI: 10.1016/j.fuel.2014.07.091
Hyperlink: http://www.sciencedirect.com/science/article/pii/S001623611400756X 
Reference Māliņš, K., Kampars, V., Kampare, R., Prilucka, J., Brinks, J., Mūrnieks, R. Properties of Rapeseed Oil Fatty Acid Alkyl Esters Derived from Different Alcohols. Fuel, 2014, Vol.137, pp.28-35. ISSN 0016-2361. Available from: doi:10.1016/j.fuel.2014.07.091
ID 19010