Model of activation of the cobalt foil as a catalyst for CO2 methanation

✍ Scribed by Joanna Łojewska; Roman Dziembaj

• Publisher: Elsevier Science
• Year: 1997
• Tongue: English
• Weight: 1010 KB
• Volume: 122
• Category: Article
• ISSN: 1381-1169
• DOI: 10.1016/s1381-1169(96)00462-1

✦ Synopsis

A model related to variation in the concentration of active centers is proposed. Previously obtained experimental results are briefly reviewed together with presentation of complementary results. The results are generalized in the assumptions of the model. Two steps of activation of the Co foil are distinguished: (1) formation of potential centers as referred to surface development during redox pretreatment, (2) transformation of potential centers into active centers via autocatalytic reduction by hydrogen contained in the methanation mixture. A good tit to the kinetic results and agreement with available experimental facts verify the validity of the model.