Effect of an electron beam on the subsequent pyrogenic distillation of lignin and cellulose

The irradiation notably influences responsiveness of cellulose and lignin to the subsequent pyrogenic distillation though both weight and the form of samples do not change almost at doses up to 3MGy. Decreases in overpoint of lignin and cellulose irradiated at 2.2MGy are ~80°and ~100°, respectively....

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Veröffentlicht in:Radiation physics and chemistry (Oxford, England : 1993) England : 1993), 2014-03, Vol.96, p.167-170
Hauptverfasser: Metreveli, P.K., Metreveli, A.K., Kholodkova, E.M., Ponomarev, A.V.
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Sprache:eng
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Zusammenfassung:The irradiation notably influences responsiveness of cellulose and lignin to the subsequent pyrogenic distillation though both weight and the form of samples do not change almost at doses up to 3MGy. Decreases in overpoint of lignin and cellulose irradiated at 2.2MGy are ~80°and ~100°, respectively. Third of condensate from cellulose and almost half from lignin are distilled-off at lower temperatures. The thermally instable compounds convertible mainly to furans via subsequent heating are forming in cellulose. Distillation of the irradiated lignin gives less tar which, however, is richer by methoxy-phenols. In distilled-off water–organic fraction the content of soluble organic compounds is increased. •Irradiation facilitates subsequent dry distillation of cellulose and lignin.•Overpoints of irradiated samples are decreasing.•Furans and methoxy-phenols formation improves.
ISSN:0969-806X
1879-0895
DOI:10.1016/j.radphyschem.2013.09.008