Further pyrolytic reactions during cellulose pyrolysis

Subsequent to the first step in pyrolysis, more decompositions take place. The paths of these decompositions strongly depend on pyrolysis conditions and may yield a wide variety of products. It is not clear which sequence is followed by the pyrolysis process, and depending on pyrolysis conditions there are variations in the amount and in the nature of the generated substances. 

The separation of the silylated pyrolysate was done on a methyl silicone with 5% phenyl silicone chromatographic column, 60 m long, 0.32 mm i.d., 0.25 p film thickness. Some of the peaks in these chromatograms were identified. However, a significant number of peaks remained unidentified or only tentatively identified. Most peak identifications were done based only on the mass spectra library search (see Section 5.3). 

126 levogiucosenone (6,8-dioxabicyclo(3.2.1)oct-2-en-4-one), (1,6-anhydro-3,4-dideoxy-D-glycerohex-3-enopyranos-2-ulose) C6H603 

6-dihydroxyhepta-4,6-dien-1-carboxylic acid ). Other compounds generated in cellulose pyrolysis. C7H10O4 

More peaks can be seen for a known mass (202, 216, 228 or 252) than the number of compounds with the corresponding mass listed in Table 7.2.10. The formation of these hydrocarbons is the result of advanced pyrolysis of some of the compounds previously listed. Due to the higher thermal stability of the compounds listed in Table 7.2.10, their concentration increases in the pyrolysates as the temperature increases. 

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Further pyrolytic reactions during cellulose pyrolysis. 

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