Bis (2-ethyl hexyl) 1,2-benzene dicarboxylate (10), n-tetradecanoic acid (43), n-eicosane (57), n-hexadecane
(54), and methyl octadecanoate (65), were recognized as the chemical compounds present in flowers of chloroform extracts of all Ixora species named as I.
Using Jatropha curcas seed oil spectrum as the maximum content of oxygenates compounds, and n-hexadecane
as hydrocarbon molecule model as the minimum oxygenated compounds, this compound was taken an internal standard to represent the final hydrotreatment product.
To simulate fuel oil spills occurring during catastrophic floods, short-term absorption of two chemicals, n-hexadecane
(representative of semivolatile organic compounds in fuel oil) and water, into southern yellow pine was gravimetrically monitored as a function of time at ambient conditions.
ANT-3b isolated from seawater in Antarctica used diesel fuel as a sole carbon and energy sources and was able to break down n-hexadecane
to nanodroplets .
The IQT calibration development work also used HMN (Heptamethylnonane also called isocetane) as the CN15 reference, as well as n-hexadecane
as the CN100 reference.
Three different solvents were tested in this study: n-hexadecane
(Sigma-Aldrich), which is an apolar solvent; chloroform (Sigma-Aldrich), a monopolar and acidic solvent; and ethyl acetate (Sigma-Aldrich), a monopolar and basic solvent.
Aliquots, 100 ml of freshly harvested raw sewage (not previously sterilized) in 250 ml flasks, were provided separately with 1.0 and 5.0 g portions of crude oil, 1.0 g portions of n-hexadecane
, and 1.0 g portions of phenanthrene.
Recently we have developed an EMD based approach using multiple independent trajectories with all-atom interaction potential to reproduce n-hexadecane
(representative of GTL diesel fuel) and ndecylbenzene (representative of conventional diesel fuel) viscosity (up to 750 bar pressure and at 423 K temperature) within 12% and 8% accuracy respectively (unpublished data).
The group's experiment to test the membrane used an emulsion that contained 3 percent water by weight and 97 percent n-hexadecane
. The goal was to strain the oil through the membrane and leave the water behind.
10 g/[m.sup.2] coatings were applied on opacity charts by a barcoater, cured at 10 m/min belt speed with a 120 W/cm Hg lamp and evaluated for surface energy (test inks), contact angles (water, n-hexadecane
), and steel wool scratch resistance.
The list of chemicals used for preparation of model solutions as representatives of FCC gasoline and diesel is as follows: n-hexane, n-heptane, toluene, and pyridine were purchased from Carlo Erba Reagenti; thiophene, n-hexadecane
, and dibenzothiophene were purchased from Acros Organics; n-dodecane was purchased from Fisher UK and isooctane from Kemika.
As part of the study, Hong-Qi Wang and Yan-Jun Chen College of Water Sciences, Beijing Normal University, working with Bo-Ya Qin of the Ministry of Environmental Protection of China, have investigated the activity of enzymes from the bacterium Bacillus cereus DQ01, which can digest the hydrocarbon n-hexadecane