2.1 Chemicals
Ferric chloride hexahydrate
(FeCl3·6H2O), trimesic acid (BTC),
methanol,
sodium
dodecyl sulfate (SDS), oleic acid, petroleum ether were analytic
reagents without purification further. The crude oil with a density of
0.77 g·cm3and a viscosity of 13.9
mN·s·m-1 at 20 ℃ was obtained from an oilfield at
Tarim Basin, China.