However, if the temperature is less than 100 ° C, catalysts HAuCl4 / C takes coke from a vinyl chloride-absorbing surface of the catalyst. And if the temperature is over 120 ° C will result in deactivation of the catalyst Au (III) and Au (I) to Au (0), which confirms the deactivation of 197Au Mӧssbauer spectroscopy.
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