A Novel LaAlO3 Perovskite with Large Surface Area Supported Ni-Based Catalyst for Methane Dry Reforming

In this paper, the LaAlO3 perovskite with large specific surface area and abundant surface oxygen vacancies is prepared by the hard template method, on which Ni metal nanoparticles and CaO alkaline additives are loaded. The generated catalyst is applied to the study of methane dry reforming. By analyzing and characterizing all catalysts prepared through BET, XRD, TEM, XPS, H2-TPR and other test methods, the LaAlO3 Hperovskite prepared by the hard template method can obtain both larger specific surface area and more abundant surface oxygen vacancies than the LaAlO3-C perovskite prepared by the traditional sol–gel method. As a result, the Ni-based catalysts supported by LaAlO3-H perovskite exhibit more favorable anti-sintering and anti-carbon deposition ability than Ni/LaAlO3-C catalyst. (Adding) CaO can enhance the adsorption of CO2 on Ni-based catalysts, so N-CaO/LaAlO3 catalyst possesses the most excellent anti-carbon deposition ability.Graphical Abstract