TY - JOUR
T1 - Effect of biodiesel on the autoxidation of lubricant base fluids
AU - Dugmore, Thomas I. J.
AU - Stark, Moray S.
PY - 2014/5/15
Y1 - 2014/5/15
N2 - The effect of low concentrations of methyl linoleate on the autoxidation of squalane (2, 6, 10, 15, 19, 23 hexamethyltetracosane) was investigated at temperatures 100 to 170 C as a chemical model of the effect of biodiesel on the degradation of hydrocarbon lubricants during use. Below 158 ± 5 C, methyl linoleate behaves as a pro-oxidant, whilst above 158 C, it inhibits alkane autoxidation. This change of mechanism is consistent with the addition of oxygen molecules to doubly allylic carbon centred radicals formed by hydrogen abstraction from methyl linoleate becoming reversible above 158 C.
AB - The effect of low concentrations of methyl linoleate on the autoxidation of squalane (2, 6, 10, 15, 19, 23 hexamethyltetracosane) was investigated at temperatures 100 to 170 C as a chemical model of the effect of biodiesel on the degradation of hydrocarbon lubricants during use. Below 158 ± 5 C, methyl linoleate behaves as a pro-oxidant, whilst above 158 C, it inhibits alkane autoxidation. This change of mechanism is consistent with the addition of oxygen molecules to doubly allylic carbon centred radicals formed by hydrogen abstraction from methyl linoleate becoming reversible above 158 C.
KW - Biodiesel
KW - Kinetics
KW - Lubricant
KW - Oxidation
UR - http://www.scopus.com/inward/record.url?scp=84894533407&partnerID=8YFLogxK
U2 - 10.1016/j.fuel.2014.01.039
DO - 10.1016/j.fuel.2014.01.039
M3 - Article
AN - SCOPUS:84894533407
SN - 0016-2361
VL - 124
SP - 91
EP - 96
JO - Fuel
JF - Fuel
ER -