Ni/MgO catalyst prepared using atmospheric high-frequency discharge plasma for CO2 reforming of methane

• Published in: Journal of natural gas chemistry 2011-09, Vol.20 (5), p.487-492
• Main Authors: Qin, Pan, Xu, Huiyuan, Long, Huali, Ran, Yi, Shang, Shuyong, Yin, Yongxiang, Dai, Xiaoyan
• Format: Article
• Language: English
• Subjects: Catalysis; Chemistry; Exact sciences and technology; General and physical chemistry; MgO; Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry; 二氧化碳; 催化剂制备; 大气; 放电等离子体; 甲烷重整; 镍基催化剂; 高频
• ISSN: 1003-9953
• DOI: 10.1016/S1003-9953(10)60228-9

A new type of Ni/MgO catalyst was prepared using atmospheric high-frequency discharge cold plasma. The influences of conventional method, plasma method, and plasma plus calcination method on the catalytic activity were studied and the CO2 reforming of methane was chosen as the probe reaction. The catalysts were characterized by X-ray diffraction （XRD）, transmission electron microscope （TEM）, X-ray photoelectron spectroscopy, and CO2 temperature-programmed surface reaction techniques. The results suggested that the nickel-based catalyst prepared by plasma plus calcination method possessed a smaller particle size and a higher dispersion of active component, better low-temperature activity and enhanced anti-coking ability. The conversion of CO2 and CH4 was 90.70% and 89.37%, respectively, and the reaction lasted for 36 h without obvious deactivation under 101.325 kPa and 750°C with CO2/CH4 = 1/1.