Open AccessSupercritical Fluid Reactions for Coal Processing
Author(s) -
Charles A. Eckert
Publication year - 1997
Language(s) - English
Resource type - Reports
DOI - 10.2172/1417
Subject(s) - supercritical fluid , chemistry , coal , anthracene , organic chemistry , supercritical fluid extraction , supercritical carbon dioxide , tautomer , chemical reaction , nitrogen , chemical engineering , engineering
Exciting opportunities exist for the application of supercritical fluid (SCF) reactions for the pre-treatment of coal. Utilizing reactants which resemble the organic nitrogen containing components of coal, we developed a method to tailor chemical reactions in supercritical fluid solvents for the specific application of coal denitrogenation. The tautomeric equilibrium of a Schiff base was chosen as one model system and was investigated in supercritical ethane and cosolvent modified supercritical ethane. The Diels-Alder reaction of anthracene and 4-phenyl-1,2,4-triazoline-3,5-dione (PTAD) was selected as a second model system, and it was investigated in supercritical carbon dioxide