H2S increases the thermal isomerization of butene-2 cis (B,) to butene-1 (B1) and butene-2 trans (Bt) around 500°C. This effect is interpreted on the basis of a free radical mechanism in which buten-2-yl and thiyl free radicals are the main chain carriers. B1 formation is essentially explained by th
Thermal isomerization of cis- or trans-2-butene. The unimolecular elimination of hydrogen from cis-2-butene around 500°C
✍ Scribed by D. Masson; C. Richard; R. Martin
- Publisher
- John Wiley and Sons
- Year
- 1976
- Tongue
- English
- Weight
- 300 KB
- Volume
- 8
- Category
- Article
- ISSN
- 0538-8066
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
An analytical and kinetic study of the thermal reaction of cis‐ or trans‐2‐butene has been performed in a static system over the temperature range of 480–550°C and at a low extent of reaction and initial pressures of 10–100 torr.
The rate constant of the unimolecular cis–trans isomerization of cis‐2‐butene, determined under the conditions
(2.3 RT in cal/mole) is in good agreement with previous measurements made at lower pressures.
A comparison between the formation rates of hydrogen from the thermal reactions of cis‐ and trans‐2 butene around 500°C leads to the rate constant value
(2.3 RT in cal/mole) for the unimolecular 1,4hydrogen elimination from __cis__2butene.
📜 SIMILAR VOLUMES