Induced heterogeneity, a novel technique for the study of gas-phase reactions. 2. Direct study of CC bond scission in ethane

✍ Scribed by Khalid Kanan; Howard Purnell; Abolgassem Sepherad

• Publisher: John Wiley and Sons
• Year: 1983
• Tongue: English
• Weight: 370 KB
• Volume: 15
• Category: Article
• ISSN: 0538-8066
• DOI: 10.1002/kin.550150813

✦ Synopsis

Deliberate activation of the reaction vessel surface leads to the domination of chain termination in ethane pyrolysis by the reaction As a result, chains are dramatically reduced in length, methane yields are entirely primary and larger in proportion to other products, and values of k l

(1) C2H6 -+ 2CH3 can he directly determined from methane yield data without ambiguity. Experiments carried out in the temperature range of 841-913K a t initial ethane pressures of 1-20 torr, without and with added nitrogen, yield the infinite pressure Arrhenius equation log k l (s-*) = 16.52 f 0.44 -87900 f 1760 cal/mo1/2.303RT It is shown that most previously published data can he combined with those of this study to yield log k l (s-l) = 16.63 f 0.18 -88400 f 720 cal/mo1/2.303RT Fall-off curves for k l as a function of pressure are in good agreement with those from other laboratories. From these the relevant data for k -l can he extracted for use in other kinetic studies.