A re-investigation of the thermal decomposition of ammonium paratungstate |
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Authors: | G J French F R Sale |
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Affiliation: | (1) Metallurgy Department, University of Manchester, Manchester, UK |
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Abstract: | The thermal decomposition of monoclinic ammonium paratungstate (APT) and amorphous ammonium metatungstate (AMT) has been studied over the temperature range 20 to 500° C using thermogravimetry, evolved gas analysis, X-ray diffraction analysis, differential thermal analysis and scanning electron microscopy. A mechanism of decomposition which postulates the formation and subsequent decomposition of various lower ratio tungstates is proposed and substantiated by the experimental data. |
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