Ce - promoted catalyst from hydrotalcites for CO2 reforming of methane: calcination temperature effect

Química Nova

Universidad Nacional de Colombia, Bogotá, Colombia¹  Molina, Rafael¹  Pontificia Universidad Javeriana, Bogotá, Colombia¹  Daza, Carlos Enrique¹  Moreno, Sonia¹ 

关键词: hydrotalcite;    calcinations;    syngas.;   

DOI  :  10.1590/S0100-40422012000700008

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

Ce-promoted Ni-catalysts from hydrotalcites were obtained. The effect of calcination temperature on the chemical and physical properties of the catalysts was studied. Several techniques were used to determine the chemical and physical characteristics of oxides. The apparent activation energies of reduction were determined. Catalytic experiments at 48 L g-1h-1 without pre-reduction in CO2 reforming of methane were performed. The spinel-like phase in these oxides was only formed at 1000 ºC. The reduction of Ni2+ in the oxides was clearly affected by the calcination temperature which was correlated with catalytic performance. The catalyst calcined at 700 ºC showed the greatest activity.

【 授权许可】

Unknown