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Thermogravimetric-Fourier transform infrared (TG-FTIR) studies, using a ramp rate of 30°C/min, have been used to determine the total acidity and carboxylic acid contents for a range of lignites from the Latrobe Valley coal fields, Vic., Australia, some of which were also studied in water- and acid-washed form. The results are compared with values determined by barium ion-exchange. Total acidities...
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