Effects of Pretreatment of Zao Zhuang and Akabira Bituminous Coals with SiCl4-NaI Reagents on Pyrolytic Behavior of Extracts.
The effects of pretreatment of Zao Zhuang and Akabira coals with SiCl4-NaI reagents (for cleavage of ether bonds) on Curie-point pyrolytic behavior of the extracts were investigated. While this treatment showed a slight increase of extraction yield, the volatile yield of extracts greatly increased along with increasing amounts of highly condensed aromatic constituents in the volatile.