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. 2024 Apr 8;9(15):17681–17690. doi: 10.1021/acsomega.4c02022

Table 2. Mean Structural Parameters of Resin and Asphaltene.

sample asphaltene resin
C (wt %) 84.555 83.595
H (wt %) 9.988 7.038
S (wt %) 2.072 2.844
N (wt %) 1.43 1.755
NH/NCa 1.417 1.01
Hα (%)b 10.4 6.3
Hβ (%)c 7.5 55
Hγ (%)d 62.2 29.5
HA (%)e 19.9 9.2
HAU/CA 0.537 0.228
RT 82.25 178.42
RA 63.15 141.05
RN 19.11 37.37
CTf 725 784
CAf 268.488 427.156
CNf 76.425 112.11
CPf 380.087 244.734
fAg 0.37 0.55
fNg 0.11 0.14
fPg 0.52 0.31
a

NH/NC is the atomic ratio of hydrogen to carbon.

b

Hα stands for aliphatic hydrogen on Cα to aromatic rings.

c

Hβ stands for the CH2, CH hydrogen on Cβ and carbons beyond Cβ, CH3 hydrogen on Cβ, and CH2, CH hydrogen on alkanes.

d

Hγ stands for the CH3 hydrogen on Cγ and beyond Cγ, and CH3 hydrogen on alkanes. RT, RA, and RN represent the total ring number, aromatic ring number, and naphthenic ring number, respectively.

e

HA stands for aromatic hydrogen.

f

CT, CA, CN, and CP represent the total carbon number, aromatic carbon number, naphthenic carbon number, and paraffinic carbon number, respectively.

g

fA, fN, and fP are the ratio of aromatic carbon, naphthenic carbon, and paraffinic carbon, respectively.