Abstract
Raman spectra were used to estimate the sizes of microcrystalline regions in coal. A variety of different Polish coals were investigated by means of the laser Raman technique. To prevent decomposition of the coals in the laser beam, the rotating disc technique was used to obtain the spectra. Some i.r. spectra of the coals under investigation were also considered. The aromatic carbon content was determined by the method of Oelert. The results of both spectroscopic techniques were compared and found to lead to the same order of magnitude of microcrystalline regions. The Tuingstra and Koenig method used for evaluation of microcrystalline regions in coal was found to be applicable if infrared studies indicate a high value of the aromaticity coefficient, i.e. if aromatic bonds are predominant in the coal under investigation.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
