Enhanced catalytic behaviour of surface dispersed nickel on LaCuO3 perovskite in the production of syngas: An expedient approach to carbon resistance during CO2 reforming of methane
F. Touahra, A. Rabahi, R. Chebout, A. Boudjema, D. Leraria, M. Sehailia, D. Halliche, K. Bachari
Jan 2016
International Journal of Hydrogen Energy
Abstract : 

Perovskite oxide LaCuO3 and LaCu0.53Ni0.47O3 were prepared using the sol–gel citrate method, whereas 5% NiO/LaCuO3 was prepared by impregnation. The products obtained, after heat treatment under air at 800 °C, were characterized by several techniques such as: thermogravimetric analysis (TG), inductively coupled plasma atomic emission spectroscopy (ICP–AES), X-ray diffraction (XRD), Brunauer–Emmett–Teller method (BET) and temperature programmed reduction (TPR). After reduction, the catalysts were evaluated in the reforming of methane reaction under continuous flow with CH4/CO2 ratio equal to 1, at atmospheric pressure and a temperature range [500–700 °C]. The catalytic activity was tested in a fixed bed reactor. At 700 °C, the amount of CH4 consumed was in its lowest in the presence of LaCuO3 whereas the amount of CH4conversion increased to 60% in case of LaCu0.53Ni0.47O3 precursor. The best results were obtained using 5% NiO/LaCuO3 precursor, whereby the amount of CH4 consumed augmented by 16.5% compared to that of LaCu0.53Ni0.47O3.


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