Journal
ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS
Volume 40, Issue 10, Pages 1226-1233Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/15567036.2018.1476614
Keywords
Asphaltene; characterization; different solvents; low-temperature coal tar; structure and composition
Ask authors/readers for more resources
To study the effects of deasphalting solvents on asphaltene, n-pentane asphaltene (As-5), n-heptane asphaltene (As-7), and soluble in n-heptane but insoluble in n-pentane asphaltene (As-(5-7)) were precipitated from low-temperature coal tar. Gel Permeation Chromatography (GPC), nuclear magnetic resonance (NMR), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) are used to analyze their structure. The results show that As-(5-7) is composed of the aromatic layer periphery of As-5, so the aromatic degree of As-(5-7) is lower and the content of alkyl and naphthenic base groups is larger. What is more, the aromatic ring consistency and condensation degree of As-(5-7), As-5, and As-7 increase gradually, so their coking potential and hydrogenating difficulty increase.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available