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. (30th January 2016)

• Record Type: Journal Article
• Authors: Touahra, F.; Rabahi, A.; Chebout, R.; Boudjemaa, A.; Lerari, D.; Sehailia, M.; Halliche, D.; Bachari, K.
• Is Part Of: International journal of hydrogen energy. Volume 41:Number 4(2016)
• Page Start: 2477
• Page End: 2486
• Publication Date: 2016-01-30
• Subjects: Syngas -- Perovskite -- Sol–gel method -- Impregnation -- Methane dry reforming; Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2015.12.062
• Languages: English
• ISSNs: 0360-3199

Abstract

Abstract: Perovskite oxide LaCuO3 and LaCu0.53 Ni0.47 O3 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 CH4 conversion increased to 60% in case of LaCu0.53 Ni0.47 O3 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 LaCu0.53 Ni0.47 O3 . Highlights: 5% NiO/LaCuO3 was synthesised using impregnation. LaCu0.53 Ni0.47 O3 was successfully synthesized using sol–gel method. The materials were applied as catalysts to generate syngas from methane reforming. 5% NiO/LaCuO3 shown high activity in syngas production compared to LaCu0.53 Ni0.47 O3 . 5% NiO/LaCuO3 resulted in less carbon deposition than LaCu0.53 Ni0.47 O3 .