溶液膨潤能を利用して触媒を含浸・分散せた石炭の液化反応

概要

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In order to develop an efficient coal liquefaction process, a pre-treatment of coal, which is capable to disperse catalyst into macromolecular network structure of coal by means of solvent swelling, has been examined. The coal for liquefaction was swollen in the tetrahvdrofurane (THF) solution of iron [II] carboxylate compound such as Fe(CF_3COO)_2 / 4H_2O in advance. After removal of THF under vacuum, the resulted coal/catalyst gel was placed into autoclave, and heated under H_2-pressure. The efficiency of coal liquefaction was evaluated by yield of THF-soluble component in the reaction products. The pre-treatment gave higher THF-soluble yield than the conventional FeS_2 (3.0 wt%), catalyst liquefaction, of which comparable yield was obtained with use only 1/6 of catalyst (Fe-atom base). Also it was revealed that the particle size dependence of coal was quite small and the sulfidation of Fe(CF_3COO)_2/4H_2O was not necessary for the liquefaction. The uniformed distribution of F-atom and Fe-atom due to Fe(CF_3COO)_2/4H_2O has been confirmed over the cross-section of solid coal particle by using a scanning electron microscopy (SEM)and energy disperse spectroscopy (EDS).
近畿大学の論文
2003-03-01