CO2 reforming of methane over LaNiO3 perovskite supported catalysts: Influence of silica support

*Djamila Sellam -  University, Algeria
Djamila Sellam -  University, Algeria
Kahina Ikkour -  University, Algeria
Sadia Dekkar -  University, Algeria
Hassiba Messaoudi -  University, Algeria
Taous Belaid -  University, Algeria
Anne- Cécile Roger -  University, France
Received: 24 Oct 2018; Revised: 21 May 2019; Accepted: 24 May 2019; Published: 1 Dec 2019; Available online: 30 Sep 2019.
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Language: EN
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Abstract

The study presents the dry reforming of methane using natural Kaolin silica as catalyst support. The silica-supported LaNiO3 perovskite catalysts (20LaNiO3/SiO2 and 40LaNiO3/SiO2) and bulk LaNiO3 catalyst were synthesized by auto-combustion method. The resulting catalysts were characterized by X-ray diffraction (XRD), N2 adsorption - desorption isotherm measurement,  scanning electron microscopy (SEM) and temperature-programmed reduction (TPR). After reduction at 700°C, they were used as catalysts for the reaction of dry reforming of methane into synthesis gas at atmospheric pressure at 800°C. The reduced 40LaNiO3/SiO2 exhibited high catalytic activity. This result was attributed to the small Ni metallic particles obtained from the reduced perovskite highly dispersed on the support and the good reducibility The increase of reduction temperature at 800 °C resulted in a further  enhancement of the catalytic performance of 40LaNiO3/SiO2 catalyst.

Keywords
Methane; Syn gas; LaNiO3 supported catalyst; kaolin silica

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