EFFECT OF PREIRRADATION WITH X-RAYS ON THE DIRECT LIQUEFACTION OF COAL

Authors
LANCAS FM CARRILHO E
Citation
Fm. Lancas et E. Carrilho, EFFECT OF PREIRRADATION WITH X-RAYS ON THE DIRECT LIQUEFACTION OF COAL, Journal of radioanalytical and nuclear chemistry, 175(5), 1993, pp. 383-387
Citations number
10
Categorie Soggetti
Chemistry Inorganic & Nuclear","Chemistry Analytical","Nuclear Sciences & Tecnology
Journal title
Journal of radioanalytical and nuclear chemistry → ACNP
ISSN journal
02365731
Volume
175
Issue
5
Year of publication
1993
Pages
383 - 387
Database
ISI
SICI code
0236-5731(1993)175:5<383:EOPWXO>2.0.ZU;2-9
Abstract
Coal is pre-irradiated with X-rays before being submitted to liquefact ion with the aim to depolymerize (upgrade) the complex network to simp le chemical species. It was found taht the pre-irradiation enhances th e liquefaction yield from 48% (liquefaction without pre-irradiation) t o 65% (after 10 h of pre-irradiation with X-rays). Our data suggests t hat since pyrolytic bond breaking is considered to be the first step i n the coal liquefaction process, pre-irradiation with X-rays will crea te free radicals which then enhance the liquefaction.