The Effect of Modifiers on the Performance of Ni/CeO₂ and Ni/La₂O₃ Catalysts in the Oxy–Steam Reforming of LNG

• Main Authors: Magdalena Mosinska, Waldemar Maniukiewicz, Malgorzata I. Szynkowska-Jozwik, Pawel Mierczynski
• Format: Article
• Language: English
• Published: MDPI AG 2021-08-01
• Series: International Journal of Molecular Sciences
• Subjects: LNG; reforming of LNG; syngas; nickel catalyst; hydrogen production
• Online Access: https://www.mdpi.com/1422-0067/22/16/9076
• ISSN: 1661-6596; 1422-0067

This work interrogates for the first time the catalytic properties of various monometallic Ni catalysts in the oxy-steam reforming of LNG. Various research techniques, including X-ray diffraction (XRD), specific surface area and porosity analysis (BET method), scanning electron microscopy with X-ray microanalysis (SEM-EDS), temperature-programmed desorption of ammonia (TPD-NH₃), temperature-programmed reduction (TPR-H₂) and the FTIR method, were used to study their physicochemical properties. The mechanism of the oxy-steam reforming of LNG is also discussed in this paper. The high activity of monometallic catalysts supported on 5% La₂O₃–CeO₂ and 5% ZrO₂–CeO₂ oxides in the studied process have been proven and explained on the basis of their acidity, specific surface area, sorption properties in relation to the reaction products, the crystallite size of the metallic nickel and their phase composition.