STUDIES ON THE EARLY STAGE OF CARBONIZATION OF PETROLEUM PITCH BY MEANS OF HIGH-TEMPERATURE H-1-NMR AND ESR

被引：25

作者：

AZAMI, K ^{[1
]}

YOKONO, T ^{[1
]}

SANADA, Y ^{[1
]}

UEMURA, S ^{[1
]}

机构：

[1] HOKKAIDO UNIV,FAC ENGN,SAPPORO,HOKKAIDO 060,JAPAN

来源：

CARBON | 1989年 / 27卷 / 02期

关键词：

Chemical Reactions--Pyrolysis - Nuclear Magnetic Resonance - Petroleum Products--Carbonization;

D O I：

10.1016/0008-6223(89)90121-8

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The early stage of carbonization of petroleum pitches has been studied by in-situ, high-temperature 1H-NMR and ESR techniques. Well-resolved 1H-NMR spectra were found to provide detailed information about the mesophase formation in the course of pyrolysis. The process of mesophase generation during cooling was clarified by using an ESR spin probe. The nucleation of mesophase embryos in these processes was clearly observed in the both spectra. It was found that the mesophase transformation occurs at nearly the same level of aromatic hydrogen fraction or spin concentration.

引用

页码：177 / 183

页数：7

共 25 条

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