Fourier transform infrared study of coal tar pitches
✍ Scribed by Maria D. Guillén; Maria J. Iglesias; Antonio Domínguez; Carlos G. Blanco
- Publisher
- Elsevier Science
- Year
- 1995
- Tongue
- English
- Weight
- 415 KB
- Volume
- 74
- Category
- Article
- ISSN
- 0016-2361
No coin nor oath required. For personal study only.
✦ Synopsis
Semiquantitative analysis of the infrared spectra from 650 to 4000cm -1 of nine coal tar pitches supplies excellent information on the concentrations of several functionalities. Relations have been found between the infrared data and the solubility, coke yield and composition of the volatile fraction of these pitches. The results contribute to a better understanding of pitch structure.
📜 SIMILAR VOLUMES
## Photoacoustic Fourier transform infrared (PA-FT-i.r.) spectrometry was employed to examine raw coal containing 1344 wt%, daf volatile matter (VM). Sample preparation for i.r. examination was the same as for ASTM proximate analysis. Technological and spectroscopic information on representative s
Your corrcspondcnt,s, JIcssrs. !I'riislcr : i d Pittn~nn, in t,licir let.tcr publislictl in CIIEMISIXY ASI) ISI)UPTI~T, d1:irch 10, 1933, rcfcr t,o tlic work ciirrictl out l)y the South JIetropolitnii Gns C'oinpiiny in iissociiition with the lnte Ah. 7-1. I'ickiirtl in connesion with tlic! viscosit,
Thermogravimetric analysis techniques have been adapted to study the thermal decomposition of six coal tar pitches. Two material constants are introduced to describe the thermal stability and/or reactivity of coal tar pitches. These constants can be correlated with the softening point of the pitches