CO2 Reforming of Methane over LaNiO3 Perovskite Supported Catalysts: Influence of Silica Support

Djamila Sellam (Laboratoire de Chimie Applique et de Genie Chimie, Université Mouloud Mammeri (UMMTO) , Tizi-ouzou)
Kahina Ikkour (Laboratoire de Chimie Applique et de Genie Chimie, Université Mouloud Mammeri (UMMTO) , Tizi-ouzou)
Sadia Dekkar (Laboratoire de Chimie Applique et de Genie Chimie, Université Mouloud Mammeri (UMMTO) , Tizi-ouzou)
Hassiba Messaoudi (Laboratoire des Matériaux Catalytiques et Catalyse en Chimie Organique, Faculté de Chimie, Université Science and Technology Houari Boumediene)
Taous Belaid (Université A. Mira Bejaia)
Anne- Cécile Roger (Institut de Chimie et Procédés pour l’Énergie, l’Environnement et la Santé, CNRS, Université de Strasbourg)

Bulletin of Chemical Reaction Engineering & Catalysis
2019: BCREC Volume 14 Issue 3 Year 2019 (December 2019)

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. Copyright © 2019 BCREC Group. All rights reserved