CO2 hydrogenation into CH4 over Ni-Fe catalysts

被引:22
作者
Far, Reza Meshkini [1 ]
Ischenko, Olena, V [1 ]
Dyachenko, Alla G. [1 ]
Bieda, Oleksandr [1 ]
Gaidai, Snezhana, V [1 ]
Lisnyak, Vladyslav V. [1 ]
机构
[1] Taras Shevchenko Natl Univ Kyiv, Chem Fac, UA-01601 Kiev, Ukraine
关键词
Hydrogenation of CO2; Ni-Fe catalysts; atmospheric pressure methanation; Ni-Fe/Al2O3; CARBON OXIDES; METHANATION;
D O I
10.1142/S1793604718500571
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Here, we report, for the first time, on the catalytic hydrogenation of CO2 to methane at atmospheric pressure. For the preparation of hydrogenation catalysts based on Ni and Fe metals, a convenient method is developed. According to this method, low-temperature reduction of the co-precipitated Ni and Fe oxides with hydrogen gives the effective and selective bimetallic Ni70Fe30, Ni80Fe20 and Ni90Fe10 catalysts. At the temperature range of 300-400 degrees C, they exhibit a high efficiency of CH4 production with respect to monometallic Ni and Fe catalysts. The results imply a synergistic effect between Ni and Fe which caused the superior activity of the Ni80Fe20 catalyst conversing similar to 67% of CO2 into CH4 at 350 degrees C. To adapt the Ni-Fe catalysts in the industry, the effect of two different carriers on the efficiency of the alumina-supported Ni80Fe20 catalyst was investigated. It is found that the Ni80Fe20/alpha-Al2O3 catalyst effectively conversed CO2 giving 100% methane yield already at 275 degrees C.
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页数:4
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