Abstract
Low boiling compounds produced by pyrolysis of flax pulp, wood pulp and handmade cigarette paper composed of flax and wood pulps in helium atmosphere at 650°C were investigated by pyrolysis gas chromatographic analysis. Only a slight differences were observed as to the number of low boiling compounds in pyrolysis products among of flax pulp, wood pulp and handmade cigarette paper. 1, 3-Cyclopentadiene (No 27), propyne+allene (No 48), isobutane (No 13), 1, 2-butadiene (No 22) and 1-hexene+2-hexene (No 34), which have never been reported as the pyrolysis products of cellulose, were newly identified from the flax pulp pyrolyzates.Pyrolysis products of levoglucosan (1, 6-anhydro-β-D-glucopyranose), 2-furaldehyde and 5-methyl-2-furaldehyde were also investigated. The numbers and yields of the low boiling compounds in pyrolysis of levoglucosan were similar to those of filter paper, while those of 2-furaldehyde and 5-methyl-2-furaldehyde were significantly different from those of levoglucosan.In the case of filter paper (α-cellulose ca. 98%), the pyrolysis in helium atmosphere was studied in the range of 450°C-750°C. The optimum temperature of pyrolysis for the maximum numbers and yields of low boiling compounds was between 650°C and 700°C.
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