Kinetics of Oxidative Dehydrogenation of Propance over a VMgO Catalyst |
| |
摘 要: |
|
关 键 词: | 氧化脱氢作用 丙烷 钒 镁 复合氧化物 动力学 催化剂 |
Kinetics of the Oxidative Dehydrogenation of Propane over a VMgO Catalyst |
| |
Authors: | L Late E A Blekkan |
| |
Institution: | Department of Chemical Engineering, Norwegian University of Science and Technology (NTNU), N-7491 Trondheim, Norway |
| |
Abstract: | The reaction kinetics of the oxidative dehydrogenation of propane was studied at 475-550oC
over a VMgO catalyst. Vanadium-magnesium-oxides are among the most selective and active catalysts for
the dehydrogenation of propane to propylene. Selectivity to propylene up to about 60% was obtained at
10% conversion, but the selectivity decreased with increasing conversion. No oxygenates were detected, the
only by-products were CO and CO2. The reaction rate of propane was found to be first order in propane
and close to zero order in oxygen, which is in agreement with a Mars van Krevelen mechanism with the
activation of the hydrocarbon as the rate determining step. The activation energy of the conversion of
propane was found to be 122±6 kJ/mol. |
| |
Keywords: | propane oxidative dehydrogenation VMgO kinetics |
|
| 点击此处可从《天然气化学杂志》浏览原始摘要信息 |
| 点击此处可从《天然气化学杂志》下载免费的PDF全文 |