|
NISCAIR ONLINE PERIODICALS REPOSITORY (NOPR) >
NISCAIR PUBLICATIONS >
Research Journals >
Indian Journal of Chemical Technology (IJCT) >
IJCT Vol.11 [2004] >
IJCT Vol.11(3) [May 2004] >
| Title: | Studies on the chemistry of thermal drying of lignite in inert atmosphere |
| Authors: | Mukherjee, Joy
Singh, Puspa
Sarkar, Abhijit |
| Keywords: | Thermal drying
lignite
dehydroxylation |
| Issue Date: | May-2004 |
| Publisher: | CSIR |
| IPC Code: | E21C 41/18 |
| Abstract: | Drying of lignite and its storage for sufficient length of
time in dried conditions has been an integral part of industrial economy, yet a
fundamental understanding of the physico-chemical changes involved still lags
far behind the practical use. Moisture is generally held in lignite by surface
forces and oxygenated groups. Elimination of carboxyl groups by thermal
decarboxylation has been found to reduce moisture holding capacity of lignite.
In this paper a relationship has been shown to exist between carboxyl-oxygen
and moisture of lignite at 60 percent relative humidity (RH) condition. Thermal
behaviour of carboxylic acid functionality has been studied. Dehydroxylation
was not observed at optimum temperature of decarboxylation. The nature and disposition
of carboxylic acid functionality in lignite has been indicated. |
| Page(s): | 314-316 |
| ISSN: | 0975-0991 (Online); 0971-457X (Print) |
| Source: | IJCT Vol.11(3) [May 2004]
|
|
