Mechanism of N,N-ethylenebisstearamide pyrolysis and formation of CO, CO2, CH4 and C2H4 in the presence of iron/carbon powder under vacuum at 300 °C < T < 700 °C

ORGN 888

Gregory Poskrebyshev, poskr@yahoo.com1, Marc M. Baum, m.baum@oak-crest.org2, John A. Moss, j.moss@oak-crest.org2, and Diran Appelian, dapelian@wpi.edu3. (1) Department of Chemistry, Oak-Crest Institute of Science, 2275 E.Foothill blvd, Pasadena, CA 91107, (2) Oak Crest Institute of Science, 2275 E. Foothill Blvd., Pasadena, CA 91107, (3) Worcester Polythechinc Institute, Worcester, MA
The kinetics describing the formation of gas-phase products from the pyrolysis of N,N'-ethylenebisstearamide (EBS) has been measured. Two modal exponential pressure growths have been observed and has been described by two first order reaction with rate constants 1.7Χ10-2 and 1.1Χ10-3 s-1 for first and second modes, respectively, at 500 °C. The formation of CO, CO2, CH4, C2H4 and other hydrocarbons has been observed. The effect of iron/carbon powder on the formation of gas-phase products during the pyrolysis of EBS were observed and have been attributed to the formation of intermediate products of low volatility, formed by EBS decomposition catalyzed by iron/carbon powder. The formation of CO and hydrocarbons has been attributed to gas-phase decomposition reactions of theses intermediates. The formation of CO2 has been attributed mainly to decomposition of stearic acid that is contaminant in commercial EBS. However, partial formation of CO2 from EBS cannot be excluded
 

Physical Organic Chemistry: Calculations, Mechanisms, Photochemistry, and High-Energy Species
8:00 AM-12:00 PM, Thursday, 17 March 2005 Convention Center -- Room 11A, Oral

Division of Organic Chemistry

The 229th ACS National Meeting, in San Diego, CA, March 13-17, 2005