Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5147804 | International Journal of Hydrogen Energy | 2017 | 11 Pages |
Abstract
The catalytic performance of the Ni, Co, Mg, and Al mixed-oxide solids, synthesized via hydrotalcite route, was investigated towards the dry reforming of methane for hydrogen production. The hydrotalcite structure was successfully obtained upon the synthesis. After calcination at 800 °C under an air flow, this structure was completely decomposed and the resulting oxides (CoxNiyMgzAl2800, x and y = 0; 1; 2; 3; 4, z = 2; 4, x + y + z = 6, x, y, and z are the molar ratios) were used as catalysts and were characterized using X-ray diffraction and Temperature-Programmed Reduction. The dry reforming of methane was carried out using a mixture of CH4:CO2 (1:1) after 2 h of reduction under an H2 flow at 800 °C. Co2Ni2Mg2Al2800 showed the highest catalytic activity in the studied series, ascribable to an interaction between Ni and Co, which is optimal for such Co/Ni ratio. The post-reaction characterization of the catalytic samples by X-ray diffraction and Differential Scanning Calorimetry evidenced a better resistance towards carbon deposition for the catalysts where Co molar ratio is higher than Ni.
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
Carole Tanios, Sandy Bsaibes, Cédric Gennequin, Madona Labaki, Fabrice Cazier, Sylvain Billet, Haingomalala Lucette Tidahy, Bilal Nsouli, Antoine Aboukaïs, Edmond Abi-Aad,