Studies on the stability of a La0.8Pr0.2NiAl11O19 catalyst for syngas production by CO2 reforming of methane

• Published in: Catalysis letters Vol. 85; no. 1-2; pp. 101 - 107
• Main Authors: Liu, Yan, Cheng, Tiexin, Li, Dongmei, Jiang, Pengbo, Wang, Junxia, Li, Wenxing, Bi, Yingli, Kaiji Zhen
• Format: Journal Article
• Language: English
• Published: Dordrecht Springer 2003; Springer Nature B.V
• Subjects: Carbon; Carbon dioxide; Catalysis; Catalysts; Catalysts: preparations and properties; Chemistry; Deactivation; Decomposition reactions; Exact sciences and technology; General and physical chemistry; Methane; Reforming; Synthesis gas; Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry; Reaction intermediate; Methane; Nickel Oxides; Carbon dioxide; Lanthanum Oxides; Nanotube; Praseodymium Oxides; catalysis; X ray; Reforming; Synthesis gas; Aluminium Oxides; CO2 reforming; Alkane; Photoelectron spectrometry; Stability; Hydrocarbon; Nickel Aluminates; Carbon; X ray diffraction; Multi-element compound; Heterogeneous catalysis; Transmission electron microscopy; Lanthanum Aluminates; Praseodymium Aluminates; hexaaluminate; Catalyst
• ISSN: 1011-372X; 1572-879X
• DOI: 10.1023/A:1022181110569

CO2 reforming of CH4 was studied over a magnetoplumbite-type hexaaluminate La0.8Pr0.2NiAl11O19 catalyst, which showed very high activity for over 300 h without deactivation at 1023 K. This catalyst showed good resistance to carbon deposition, which in this reaction and in CH4 decomposition was investigated by means of XPS and TEM. It is suggested that nano-tube-like carbon is an intermediate in this reaction and a spillover of carbon from crystalline Ni onto the hexaaluminate oxide occurred during the reaction.