Pn. Kuznetsov et al., Studies on the effect of irradiation by accelerated electrons on the hydrogenation reactivity of brown coal, FUEL, 80(15), 2001, pp. 2203-2206
The effects of irradiation pretreatment with the beam of accelerated electr
ons on the composition of brown coal, its X-ray structural parameters, tetr
ahydrofuran swelling and the reactivity for the hydrogenation into the low
molecular and soluble products were studied. The radiation-induced effects
were compared to those of conventional different chemical and mechanochemic
al pretreatments. The irradiation in the presence of polar ethanol solvent
was shown to be the most beneficial pretreatment, which greatly improves th
e reactivity of brown coal for the hydrogenation in tetralin solvent. Radia
tion effects are discussed in terms of the radiation-induced rearrangements
within the supramolecular structure of organic matter of coal. (C) 2001 El
sevier Science Ltd. All rights reserved.