Fig. 6
![Fig. 6](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs40494-019-0251-4/MediaObjects/40494_2019_251_Fig6_HTML.png)
Fourth-shot pyrogram at 600 °C obtained for the sample from “Disgelo”. The asterisk marks not well resolved peaks due to oligomers
Fourth-shot pyrogram at 600 °C obtained for the sample from “Disgelo”. The asterisk marks not well resolved peaks due to oligomers