Mesophase formation behavior in petroleum residues

서지정보

ㆍ발행기관 : 한국탄소학회 ㆍ수록지정보 : Carbon Letters / 16권 / 3호
ㆍ저자명 : Subhash Kumar, Manoj Srivastava

목차

1. Introduction
2. Experimental
3. Results and Discussion
4. Conclusions
References

한국어 초록

Mesophase pitch is an important starting material for making a wide spectrum of industrialand advanced carbon products. It is produced by pyrolysis of petroleum residues. In thiswork, mesophase formation behavior in petroleum residues was studied to prepare environmentally-benign mesophase pitches, and the composition of petroleum residues and its influenceon the mesophase formation was investigated. Two petroleum residues, i.e., clarified oils (CLO-1, CLO-2) obtained from fluid catalytic cracking units of different Indian petroleumrefineries, were taken as feed stocks. A third petroleum residue, aromatic extract (AE), wasproduced by extraction of one of the CLO-1 by using N-methyl pyrrolidone solvent. Thesepetroleum residues were thermally treated at 380°C to examine their mesophase formationbehavior. Mesophase pitches produced as a result of thermal treatment were characterizedphysico-chemically, as well as by instrumental techniques such as Fourier-transform infraredspectroscopy, nuclear magnetic resonance, X-ray diffraction and thermogravimetry/derivativethermogravimetry. Thermal treatment of these petroleum residues led to formationof a liquid-crystalline phase (mesophase). The mesophase formation behavior in the petroleumresidues was analyzed by optical microscopy. Mesophase pitch prepared from CLO-2exhibited the highest mesophase content (53 vol%) as compared to other mesophase pitchesprepared from CLO-1 and AE.

영어 초록

Mesophase pitch is an important starting material for making a wide spectrum of industrial
and advanced carbon products. It is produced by pyrolysis of petroleum residues. In this
work, mesophase formation behavior in petroleum residues was studied to prepare environmentally-
benign mesophase pitches, and the composition of petroleum residues and its influence
on the mesophase formation was investigated. Two petroleum residues, i.e., clarified oil
s (CLO-1, CLO-2) obtained from fluid catalytic cracking units of different Indian petroleum
refineries, were taken as feed stocks. A third petroleum residue, aromatic extract (AE), was
produced by extraction of one of the CLO-1 by using N-methyl pyrrolidone solvent. These
petroleum residues were thermally treated at 380°C to examine their mesophase formation
behavior. Mesophase pitches produced as a result of thermal treatment were characterized
physico-chemically, as well as by instrumental techniques such as Fourier-transform infrared
spectroscopy, nuclear magnetic resonance, X-ray diffraction and thermogravimetry/derivative
thermogravimetry. Thermal treatment of these petroleum residues led to formation
of a liquid-crystalline phase (mesophase). The mesophase formation behavior in the petroleum
residues was analyzed by optical microscopy. Mesophase pitch prepared from CLO-2
exhibited the highest mesophase content (53 vol%) as compared to other mesophase pitches
prepared from CLO-1 and AE.

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