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Thermal degradation of corncobs and straw

M. Koóš, M. Repáš, M. Košík, V. Reiser, V. Mihálov, and M. Čiha

Institute of Chemistry, Centre of Chemical Research, Slovak Academy of Sciences, CS-842 38 Bratislava

 

Abstract: The composition of the pyrolyzate of untreated and H3PO4-impregnated corncobs and straw was studied by g.I.c.—mass spectrometry. The major products of thermal degradation were 2-furaIdehyde, acetic acid, Ievoglucosenone, and the other significant compounds were identified as 3-hydroxy-2-penteno-l,5-lactone, levulinic acid, guaiacol, acrylaldehyde, and 4-hydroxy-3-methoxy-l-vinylbenzene. The treatment of corncobs and straw with acid catalyst before the pyrolysis showed expressive changes of amount and distribution of pyrolytic products. Substantial departures between the composi­tion of the pyrolyzate of corncobs and straw were not found. The results of dynamic thermal analysis (TG, DTG, DTA) are also reported.

Full paper in Portable Document Format: 373a399.pdf

 

Chemical Papers 37 (3) 399–408 (1983)

Monday, August 08, 2022

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