Molecular-structural study of oxygen in coals. 1. Geochemical bonds of oxygen in Paleogene coals

Pages: 
pp. 105-110
Geology and Geography Faculty, Sofia University "St. Kliment Ohridski" 15 Tsar Osvoboditel Blvd., 1504 Sofia, Bulgaria
Geology and Geography Faculty, Sofia University "St. Kliment Ohridski" 15 Tsar Osvoboditel Blvd., 1504 Sofia, Bulgaria
Geology and Geography Faculty, Sofia University "St. Kliment Ohridski" 15 Tsar Osvoboditel Blvd., 1504 Sofia, Bulgaria
Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria
Abstract: 

The distribution of total oxygen, its forms of binding and geochemical bonds have been studied in Bulgarian Paleogene coals. Various petrographical and chemical analyses have been carried out. The analytical data are quantitatively evaluated by means of statistical, regressional and cluster analyses. The quantitative distribution of the oxygen forms in the coal macromolecule enables the estimation of the coalification processes development. The good correlation between oxygen-containing functional groups and the different macerals suggests that the hydroxyl (phenol), carbonyl and carboxyl groups can be used as genetic indicators. The dependences established between the carbon content, respectively, the reflectance and >CO and -COOH content points that these groups are coalification indicators.

К. Маркова. С. Вылчева, Ст. Лефтерова, В. Вычев. Молекулярно-сmруктурные исследования кислорода в углях. 1. Геохимические связи кислорода в Палеогеновых углях. Распределение общего кислорода, его форм связи и геохимические связи изучались на олгарских палеогеновых углях. Применялись разнообразные петрографические и химические анализы. Аналитическая информация подвергалась статистическому, регрессионному и кластерному анализу. Количественное распределение форм кислорода в угольной макромолекуле позволило выявить развитие процесса углефикации. Хорошая корреляция между кислород-содержащими функциональными группами и разными мацералями дает онование предполагать, что карбоксильные группы могуть быть использованы для генетических индикаций. Установленные зависимости между содержанием углерода, отражательной способностью и содержанием >СО и -СООН дает основание использовать последние группы в качестве индикаторов углефикации.

Keywords: 

oxygen in coals, Paleogene coals, Bulgaria, molecular structures, statistics

VOLUME 27 (1-2)/August 1997 50th Anniversary of the Geological Institute, Bulgarian Academy of Sciences

Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria

Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria
|
Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria

Strumiška 96, 11000 Beograd
|
Ministry of Mining and Energetics, rovinjska 12, 11050 Beograd

Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria
|
Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria
|
Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria
|
Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria

Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria

Department of Geology and Palaeontology, Sofia University "St. Kliment Ohridski" 15 Tsar Osvoboditel Blvd., 1504 Sofia, Bulgaria

Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria

Department of Geology, University of Patras, 26110, Greece
|
Department of Geology, University of Patras, 26110, Greece
|
Department of Geology, University of Patras, 26110, Greece
|
Department of Geology, University of Patras, 26110, Greece

Departament of Botany, Biological Faculty, Sofia University, Sofia 1000
|
Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria

University of Patras, Department of Geology, 26110 Patras, Greece
|
University of Patras, Department of Geology, 26110 Patras, Greece

Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria

Geology and Geography Faculty, Sofia University "St. Kliment Ohridski" 15 Tsar Osvoboditel Blvd., 1504 Sofia, Bulgaria
|
Geology and Geography Faculty, Sofia University "St. Kliment Ohridski" 15 Tsar Osvoboditel Blvd., 1504 Sofia, Bulgaria
|
Geology and Geography Faculty, Sofia University "St. Kliment Ohridski" 15 Tsar Osvoboditel Blvd., 1504 Sofia, Bulgaria
|
Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria