Reactions of a bituminous coal with metal chlorides in carbon tetrachloride |
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| Authors: | Lazarin Lazarov Georg Nietfeld K. Puschmann Simeon Angelov Eberhard Stumpp |
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| Affiliation: | 1. Institute of Inorganic Chemistry, Technical University of Clausthal, 3392 Clausthal-Zellerfeld, FRG;2. Institute of Organic Chemistry, Bulgarian Academy of Sciences, 1040 Sofia, Bulgaria;3. Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, 1040 Sofia, Bulgaria |
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| Abstract: | The interaction of a bituminous coal (87.2% C) with several metal chlorides in carbon tetrachloride was studied using the conditions under which graphite forms intercalation compounds. Adducts with SbCl5, AlCl3, FeCl3 and MoCl5 were isolated by filtration and washing with carbon tetrachloride. Atomic ratios versus coal carbon are as follows: C10.0SbCl7.4; C6.2AlCl4.1; C6.3FeCl3.3; and C11.3MoCl3.8. X-ray diffraction patterns of the adducts show no 002-band, the latter being partially recovered after extraction with diluted hydrochloric acid. The g-value of the e.s.r. signal of the coal vitrain shows a characteristic increase because of adduct formation with SbCl5 and AlCl3 and is reversible by hydrolysis extraction. The results obtained indicate that the bonding with SbCl5 and AlCl3 is mainly due to formation of chloro-complexes and with FeCl3 and MoCl5 — to formation of organo-metal complexes. |
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