催化作用
蒸汽重整
化学工程
材料科学
镍
氧化铈
化学
氢
制氢
程序升温还原
无机化学
二氧化碳重整
氧化物
铈
合成气
焦炭
核化学
作者
Magdalena Mosinska,Waldemar Maniukiewicz,Malgorzata I. Szynkowska-Jozwik,Pawel Mierczynski
摘要
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.
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