Summary: Two new monocyclic naphthene
derivatives (1and 2) along with seven known compounds for the first time from the chloroform soluble fraction of the Tamarix indica.
Type II kerogen is dominated by cyclic (naphthene
and aromatic) structures, and derived from a mix of algal, grassy and woody remains.
The mainstream method separates the asphalt binder into aliphatics, naphthene
aromatics, polar aromatics, and asphaltenes according to different polarities created by Corbett .
Another critical aspect is the choice of an "aging parameter." Since oxidation alters the bitumen composition, aging evaluation may be approached starting from the well-known fractionation proposed by Corbett  in saturates, naphthene
aromatics, polar aromatics, and asphaltenes, in the order of their increasing molecular polarity.
Reaction A B E/R Paraffin global step [C.sub.12][H.sub.24] + 6[O.sub.2] 3.888E4 1 1.220E4 [right arrow] 12CO + 12[H.sub.2] Naphthene
global step [C.sub.12][H.sub.24] + 6[O.sub.2] 2.132E7 1 1.965E4 [right arrow] 12CO + 12[H.sub.2] [H.sub.2] + [O.sub.2] = OH + OH 1.700E13 0 2.407E4 OH + [H.sub.2] = [H.sub.2]O + H 2.190E13 0 2.590E3 OH + OH = O + [H.sub.2]O 6.023E12 0 5.500E2 O + [H.sub.2] = H + OH 1.800E10 1.0 4.480E3 H + [O.sub.2] = O + OH 1.220E17 -0.9 8.369E3 M + O + H = OH + M 1.000E16 1 0 M + O + O = [O.sub.2] + M 2.550E18 0 5939E4 M + H + H = [H.sub.2] + M 5.000E15 -1.0 0 M + H + OH = [H.sub.2]O + M 8.400E21 0 0 CO + OH = H + C[O.sub.2] 4.000E12 -2.0 4.030E3 CO + [O.sub.2] = C[O.sub.2] + O 3.000E12 0 2.500E4 CO + O + M = C[O.sub.2] + M 6.000E13 0 0
is used to describe the group of cycloalkanes.
However, no correlation was found between the atomic force microscopy morphology and the composition made up of asphaltenes, polar aromatics, naphthene
aromatics and saturates .
The ASTM D4124-84 method separates the pure bitumen into four fractions: saturates, naphthene
aromatics, polar aromatics and asphaltenes.
Its chemical composition consists of a great variety of chemical components, which can be classified as asphaltenes, polar aromatics, naphthene
aromatics and saturates.
Gasoline was modeled as a surrogate blend of seven components, intended to emulate the paraffin, isoparaffin, aromatic, naphthene
, and olefin content of typical gasoline as shown in Table 2.
is the main compound contributing to S2 peak, while aromatic compounds have a minor part (Table 2).
These compounds belong to the classes, fatty acids and their esters, triglycerides, alcohols, steroids and their glycosides, phenol derivatives, coumarins, alkaloids of different classes, monocyclic naphthene
derivatives, terpenes and flavonoids, and their glycosides.