✦ LIBER ✦

Hetero-homogeneous pyrolysis of isobutane and platinum wall-effects in conditioned or unconditioned reactors

✍ Scribed by R. Zils; D. Perrin; R. Martin

Publisher: John Wiley and Sons
Year: 1994
Tongue: English
Weight: 379 KB
Volume: 26
Category: Article
ISSN: 0538-8066
DOI: 10.1002/kin.550260114

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✦ Synopsis

The pyrolysis of isobutane has been studied a t 500°C in a "Pyrex" static reactor packed with platinum. It is shown that both dehydrogenation and demethanation rates are strongly depressed by the metal packing. The reaction rates are very sensitive to the amount of cabonaceous coating which is deposited on the walls. As this amount increases, both rates first increase, go through a maximum and decrease. These observations are compared with those previously made on propane pyrolysis in a "Pyrex" reactor packed with stainless steel. The present results are interpreted on the basis of a hetero-homogeneous chain mechanism in which the selectivity of the free-radical reaction is not altered referring to the unpacked reactor. 0 1994 John Wiley & Sons, Inc.

*Special issue dedicated to Dr. R. A. Back. The Laboratory was honored to receive Bob and his wife Margaret during a sabbatical year in 1976. Since that time, numerous and fruitful exchanges were set up between Nancy and Ottawa and many strong and friendly ties were built which will last.

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