4.7 Article

The dependence of pyrolysis behavior on the crystal state of cellulose

期刊

CARBOHYDRATE POLYMERS
卷 79, 期 1, 页码 164-169

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ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2009.07.038

关键词

Cellulose; Crystal form; Pyrolysis; Ionic liquid; Regeneration

资金

  1. National Basic Research Program of China [2007CB210203]
  2. Special Research Fund for the Doctoral Program of Higher Education of China [20050610013]

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Cellulose was dissolved in the ionic liquid 1-butyl-3-methylimidazolium chloride, and then regenerated from the solution by using different methods. Thermogravimetric analysis (TG)-Differential Scanning Calorimetry (DSC), X-ray diffraction (XRD), and Scanning Electron Microscopy (SEM) were used to characterize the structure of the original and regenerated cellulose. Cellulose II or amorphous cellulose was obtained by pouring cellulose solution into de-Toned water or pouring de-Toned water into cellulose solution. respectively. The pyrolysis behavior of original and regenerated cellulose was tested in a fixed bed reactor. The pyrolysis of cellulose I gave high content of furfural and 1,4;3,6-dianhydro-alpha-D-glucopyranose in the liquid products, and cellulose II and amorphous cellulose gave high content of furfural and 5-(hydroxymethyl)-2-furancarboxyaldehyde, with 5-(hydroxymethyl)-2-furancarboxyaldehyde the highest for cellulose II and furfural the highest for amorphous cellulose. And the treatment of the cellulose samples favored the removal of oxygen in the form of CO2 in the pyrolysis. (C) 2009 Elsevier Ltd. All rights reserved.

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