Citation: CHEN Wu-hua, WANG Ye-fei, DING Ming-chen, SHI Sheng-long, YANG Zhen. Properties of palm oil biodiesels derived from different alcohols[J]. Journal of Fuel Chemistry and Technology, ;2016, 44(11): 1356-1362. shu

Properties of palm oil biodiesels derived from different alcohols

School of Petroleum Engineering China University of Petroleum (East China), Qingdao 266580, China

Corresponding author: CHEN Wu-hua, cwh8157@163.com
Received Date: 29 June 2016
Revised Date: 14 September 2016

Fund Project: the National Natural Science Foundation of China 51474235Program for Changjiang Scholars and Innovative Research Team in University IRT1294the National Natural Science Foundation of China 51206188

Figures(5)

The palm oil biodiesels with different ester alkyls were prepared through transesterification of palm oil with methanol, ethanol, isopropanol and isobutanol. The crystallization behavior and cold flow properties of the palm oil biodiesels were characterized by differential scanning calorimeter (DSC) and stress controlled rheometer; the effect of ester alkyl on certain important properties such as the oxidation stability, kinematic viscosity (40℃) and density (20℃) was then investigated. The results suggested that the palm oil biodiesels with larger ester alkyls exhibit lower crystal precipitation temperature and gelation point than those biodiesels with ester methyl; especially, the crystal precipitation temperature and gelation point for the palm oil biodiesel derived from isobutanol reach -2.57 and -8.09℃, respectively. An increase in the length of ester alkyl chain in alcohol moiety can significantly improve the cold flow properties of the palm oil biodiesels, by slightly prolonging the oxidation induction period and enhancing the oxidative stability. The palm oil biodiesels with different ester alkyls are also different in their kinematic viscosity and density; however, all these values can meet the requirement from the biodiesel standard of China.
- palm oil biodiesel,
- ester alkyl,
- crystallization behavior,
- cold flow properties,
- oxidation stability
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