Reactivity and structural modification of coals in HNO3-Ac2O system

被引：14
|
作者：
Tamarkina, YV
Shendrik, TG
Krzton, A [1 ]
Kucherenko, VA
机构：
[1] Polish Acad Sci, Inst Coal Chem, PL-44121 Gliwice, Poland
[2] Natl Acad Sci Ukraine, LM Litvinenko Inst Phys Organ & Coal Chem, UA-83114 Donetsk, Ukraine
来源：
FUEL PROCESSING TECHNOLOGY | 2002年 / 77卷
关键词：
coal; nitration; oxidation; oxygen functional groups; modification;
D O I：
10.1016/S0378-3820(02)00059-0
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
The interaction of different rank coals with equimolar HNO3-Ac2O mixture has been studied. This process, proceeding fast at 15-30 degreesC for several hours. results in changes of spatial and chemical structures because of nitration of coal arenes. formation of oxygen functional groups and partial cleavage of C-C cross-links. As a result, structurally modified coals (SMCs) are obtained as new coal-derived substances. Properties of SMCs were investigated by X-ray diffraction method. DRIFT spectroscopy and thermogravimetry. The main reactions responsible for structural modification have been proposed, (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：9 / 15
页数：7
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