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

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. Copyright © 2019 BCREC Group. All rights reserved

A Mini-Review on Lanthanum–Nickel-Based Perovskite-Derived Catalysts for Hydrogen Production via the Dry Reforming of Methane (DRM)

“…This denotes the inability of silicate phase to encapsulate the nickel nanoparticles on the surface. Similarly, Sellam et al [63] investigated LaNiO 3 /SiO 2 -supported catalysts and reported an improved catalytic performance owing to the higher surface area and nanosized nickel particles. Zhang et al [142] prepared LaNiO3 perovskites supported on mesoporous silica and tried to capitalize the confinement effect derived from the use of this mesoporous material.…”

“…Several techniques by different scientific groups have been developed to transfuse higher carbon resistance and reduce carbon deposition [55,56]. For this purpose, materials with different structures, such as phyllosilicates [30,52,54,57], spinel [58][59][60], and perovskites [61][62][63][64][65], have been widely used as catalyst precursors.…”