Kinetics investigation of toluene oxidation on perovskite-type La1-xCexMn0.6Cu0.4O3 Nano catalysts
Publish Year: 1393
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
OGPD01_040
تاریخ نمایه سازی: 1 مهر 1394
Abstract:
Perovskite catalysts (La1-xCexMn0.6Cu0.4O3) were synthesized via sol-gel auto combustion method. Activities of catalysts were tested in toluene oxidation. The catalysts show high activity in the range of reaction temperature (200–300 ºC). The catalytic activity increases monotonously with the degree of substitution of La by Ce. The following order was observed for performance of catalysts: La0.7Ce0.3Cu0.4Mn0.6O3 > La0.8Ce 0.2Cu0.4Mn0.6O3> La0.9Ce0.1Cu0.4Mn0.6O3 > LaCu0.4Mn0.6O3. Kinetics calculations for all catalysts were performed. Kinetic parameters including k0, E1, k0,VOC, ΔHVOC, k0,OX and ΔHOX are estimated for two Langmuir–Hinshelwood models. Kinetic study shows that LH-OS-D mechanism is more possible than LH-DS-ND mechanism. This methodology of simulation provides easily kinetic (activation energies) and thermodynamic (heats of adsorption) parameters.
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Authors
Parisa Rashidi
Faculty of Engineering, Tehran North Branch, Islamic Azad University, Tehran, Iran,
Mir Esmaeil Masoumi
Faculty of Engineering, Tehran North Branch, Islamic Azad University, Tehran, Iran,
Aligholi Niaee
Department of chemical engineering & Petroleum, University of Tabriz, Tabriz, Iran,
Ali Tarjomannejad
Department of chemical engineering & Petroleum, University of Tabriz, Tabriz, Iran,
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