Direct decomposition of methane over Ni catalyst supported in magnesium aluminate

作者：Nuernberg Giselle D B; Foletto Edson L^*; Campos Carlos E M; Fajardo Humberto V; Carreno Neftali L V; Probst Luiz F D

来源：Journal of Power Sources, 2012, 208: 409-414.

DOI：10.1016/j.jpowsour.2012.02.037

• Methane decomposition
• Magnesium aluminate
• MgAl2O4
• Synthesis

In this paper, the results obtained in the methane decomposition reaction promoted by a Ni catalyst supported on MgAl2O4 spinel are presented. The textural properties of the catalyst were investigated by X-ray diffraction (XRD), N-2 adsorption/desorption isotherms (BET and BJH methods), thermogravimetric (TGA) and temperature-programmed reduction (TPR) analysis. The influence of the operating conditions employed on the methane decomposition was studied. According to the results, it was found that a N-2:CH4 molar ratio of 7:1 and catalyst reduction temperature of 700 degrees C/1 h were the best conditions for methane decomposition. In addition, in the methane decomposition over Ni/MgAl2O4, multiwall carbon nanotubes were formed.

• 出版日期2012-6-15