Record details

Title
    Continuous monitoring of the oxidation of different types of organic matter in a heated (190°C) FTIR flow cell
Statement of responsibility
    Zdeněk Sobalík, Jiří Čejka, Bohdan Kříbek
Author
    Čejka, Jiří
    Kříbek, Bohdan, 1946-
    Sobalík, Zdeněk
Language
    anglicky
Source title - monograph
    Weathering of Fossil Organic Matter
Pages
    s. 37-48
Notes
    6 obr., 1 tab., 2 s.bibl.
Subject group
    dusík
    jílovec
    macerály
    miocén
    organická substance
    oxidace
    sokolovská pánev
    spektrometrie IR
Geographical name
    ČR-Čechy
    Sokolov
Keyword
    190°C
    Cell
    Continuous
    Different
    Flow
    FTIR
    Heated
    Matter
    Monitoring
    Organic
    Oxidation
    Types
Abstract (in english)
   Oxidation of predominantly aliphatic and mixed aliphatic-aromatic types of fossil organic matter from the Miocene sediments of the Sokolov Basin (Czech Republic) has been studied in a FTIR flow cell. The kinetics of oxidation of these natural specimens was followed by a transmission in-situ FTIR measurements usingf a sample in the form of a pressed, self-supprted pellet. Consumption of the CH2 and CH3 species and the formation of oxygenated products in a flow of nitrogen/oxygen 1:1 mixture was continuously monitored for 10 hours. Linear correlation between the decrease in the intensity of the 2855 cm-1 band (vCH2) and the increase in the intensity of the 1900-1550 cm-1 bands (oxygenated species) were found for both aliphatic and mixed-type organic matter. this indicated that the chemistry of the oxidation reactions during the whole experimental run did not change substantially.
   However, a detailed analysis of th IR profiles has shown preferential increase of the phenyl esters formation with the time of oxidation. Three times more alkyl species were consumed to produce the same integral intensity of the oxygen containing species during the oxidation of the aliphatic type when compared with the mixed type
Contributor
    Česká geologická služba
Contributor code
    ČGS (UNM)
Source format
    U
Entered date
    29. 10. 2007
Import date
    8. 8. 2012