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- W146804402 abstract "Publisher Summary This chapter describes the preparation of anion-exchange materials from a sub-bituminous coal by means of chlorination and amination reactions. The coal used was a Spanish sub-bituminous coal from Utrillas (Teruel), which was sieved to 0.5–1.25 mm and dried in vacuum at 105°C prior to use. Chlorination with sulfuryl chloride (SO2Cl2) was performed with the coal sample (10 g) suspended in CCL (100 ml). SO2Cl2 (12 ml) was slowly added to the stirred mixture, which was heated to 60°C or 74°C (reflux) for the desired time. The chlorinated coal was then filtered and dried in vacuum for 24 h and subsequently washed with distilled water until free of chloride. The chapter discusses the influence of reaction time on the chlorination yield using SO2Cl2/CCl4 at two temperatures. Temperature did not seem to have a marked effect on chlorination at short reaction times (5–6 h). Higher reaction time produced an increase of chlorination at 60°C but did not modify the yield at 74°C." @default.
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- W146804402 date "1991-01-01" @default.
- W146804402 modified "2023-09-27" @default.
- W146804402 title "ANION-EXCHANGE MATERIALS FROM COAL" @default.
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- W146804402 doi "https://doi.org/10.1016/b978-0-7506-0387-4.50053-x" @default.
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