NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Global Kinetic Constants for Thermal Oxidative Degradation of a Cellulosic PaperValues of global kinetic constants for pyrolysis, thermal oxidative degradation, and char oxidation of a cellulosic paper were determined by a derivative thermal gravimetric study. The study was conducted at heating rates of 0.5, 1, 1.5, 3, and 5 C/min in ambient atmospheres of nitrogen, 0.28, 1.08, 5.2 percent oxygen concentrations, and air. Sample weight loss rate, concentrations of CO, CO2, and H2O in the degradation products, and oxygen consumption were continuously measured during the experiment. Values of activation energy, preexponential factor, orders of reaction, and yields of CO, CO2, H2O, total hydrocarbons, and char for each degradation reaction were derived from the results. Heat of reaction for each reaction was determined by differential scanning calorimetry. A comparison of the calculated CO, CO2, H2O, total hydrocarbons, sample weight loss rate, and oxygen consumption was made with the measured results using the derived kinetic constants, and the accuracy of the values of kinetic constants was discussed.
Document ID
19920046864
Document Type
Reprint (Version printed in journal)
Authors
Kashiwagi, Takashi (NASA Lewis Research Center Cleveland, OH, United States)
Nambu, Hidesaburo (NIST, Building and Fire Research Laboratory, Gaithersburg MD, United States)
Date Acquired
August 15, 2013
Publication Date
March 1, 1992
Publication Information
Publication: Combustion and Flame
Volume: 88
ISSN: 0010-2180
Subject Category
INORGANIC AND PHYSICAL CHEMISTRY
Funding Number(s)
CONTRACT_GRANT: NASA ORDER C-32000-K
Distribution Limits
Public
Copyright
Other