- Author
-
Lipska, A. E.
|
Wodley, F. A.
- Title
- Isothermal Pyrolysis of Cellulose. Kinetics and Gas Chromatographic/Mass Spectrometric Analysis of the Degradation Products.
- Coporate
- Naval Radiological Defense Lab., San Francisco, CA
- Report
-
NRDL-TR-68-89
March 22, 1968
43 p.
- Distribution
- AVAILABLE FROM National Technical Information Service (NTIS), Technology Administration, U.S. Department of Commerce, Springfield, VA 22161. Telephone: 1-800-553-6847 or 703-605-6000; Fax: 703-605-6900; Rush Service (Telephone Orders Only) 800-553-6847; Website: http://www.ntis.gov
- Keywords
-
wood
|
pyrolysis
|
celluloses
|
weight loss
- Abstract
- Untreated white alpha cellulose samples were isothermally pyrolyzed in a fluidized bath in a nitrogen environment at 315 deg. C, 335 deg. C, and 360 deg. C. Weight loss measurements at 315 deg. C and 335 deg. rendered three distinct phases of pyrolysis which correlated with those previously reported for the temperature range 276 deg. C - 298 deg. C. The ratio of the weight loss in the initial region versus that in the linear region decreases with increasing temperature up to 350 deg. C, i.e., the ratio goes from 4 at 288 deg. C to 1.1 at 350 deg. C. The presence of the different phases of pyrolysis was substantiated by measurements with the time-of-flight mass spectrometer, where the degradation products were directly generated in the mass spectrometer by the pyrolysis of untreated white alpha cellulose at 298 deg. C.