Changes of spin system in coal with addition of iodine

被引:5
作者
Sanada, Y
Sasaki, M
Kumagai, H
Aizawa, S
Nishizawa, T
Mineo, T
Chiba, T
机构
[1] Hokkaido Univ, Ctr Adv Res Energy Technol, Kita Ku, Sapporo, Hokkaido 0608628, Japan
[2] Natl Inst Adv Ind Sci & Technol, Toyohira Ku, Sapporo, Hokkaido 0628517, Japan
基金
日本学术振兴会;
关键词
coal; iodine; microwave power saturation;
D O I
10.1016/S0016-2361(02)00053-4
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
The characteristics of spin system in coal have been compared with and without addition of iodine by means of electron spin resonance spectroscopy. With the addition of iodine. the spectra obtained from low rank coals remain almost unchanged, while those from high rank coals consist of two distinct lines, one narrow and the other broad. The peak intensities of broad component are proportional to the addition of iodine, whereas those of narrow component do not change over the range of iodine doping. Microwave power saturation characteristics of broad component are altered from homogeneous case to inhomogeneous one by iodine doping. (C) 2002 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:1397 / 1402
页数:6
相关论文
共 24 条
[1]   Pathway of TCNE interaction with coal to enhance its solubility in the NMP-CS2 mixed solvent [J].
Chen, C ;
Kurose, H ;
Iino, M .
ENERGY & FUELS, 1999, 13 (06) :1180-1183
[2]   ELECTRON-PARAMAGNETIC-RES STUDY OF MOLECULAR-PHASES IN COAL [J].
DUBER, S ;
WIECKOWSKI, AB .
FUEL, 1982, 61 (05) :433-436
[3]  
KANEKO T, 1929, ADV CHEM SER, V229, P529
[4]  
KOVAC J, 1977, AM CHEM SOC DIV FUEL, V22, P181
[5]  
LARSEN JW, 1978, ACS SYM SER, V71, P36, DOI DOI 10.1021/BK-1978-0071.CH002
[6]  
LEICESTER J, 1956, APPL CHEM LOND, V6, P96
[7]   EFFECT OF TCNE ADDITION ON THE EXTRACTION OF COALS AND SOLUBILITY OF COAL EXTRACTS [J].
LIU, HT ;
ISHIZUKA, T ;
TAKANOHASHI, T ;
IINO, M .
ENERGY & FUELS, 1993, 7 (06) :1108-1111
[8]   MACROMOLECULAR STRUCTURE OF COALS .9. MOLECULAR-STRUCTURE AND GLASS-TRANSITION TEMPERATURE [J].
LUCHT, LM ;
LARSON, JM ;
PEPPAS, NA .
ENERGY & FUELS, 1987, 1 (01) :56-58
[9]  
MACKINNON AJ, 1995, ENERGY FUEL, V9, P5
[10]   THE BASICITY OF AROMATIC HYDROCARBONS .1. UNSUBSTITUTED POLYNUCLEAR COMPOUNDS [J].
MACKOR, EL ;
HOFSTRA, A ;
VANDERWAALS, JH .
TRANSACTIONS OF THE FARADAY SOCIETY, 1958, 54 (01) :66-83