SOLVENT EXTRACTION OF PAKISTAN COALS (III) EXTRACTION AND CHARACTERIZATION OF THE EXTRACTS BY SPECTROSCOPIC TECHNIQUES

Autor: Agha Z. Khan, Nisar Ahmad, Ali Sher Bhatti, M. Zahid Raza
Rok vydání: 1995
Předmět:
Zdroj: Fuel Science and Technology International. 13:973-990
ISSN: 0884-3759
DOI: 10.1080/08843759508947718
Popis: The Makerwal coal of Pakistan gives higher extractibi1ity with Tetrahydrofuran ( THF ) as compared to Sharigh, Sor-Range and Lakhra coals. The structural characterization of Pakistan coal extracts by FT-IR spectroscopy indicates that all the extracts contained less condensed aromatic rings in comparision to their original coal.
Databáze: OpenAIRE