Catalytic performance of Ni–Pr supported on delaminated clay in the dry reforming of methane

✍ Scribed by Oscar Gamba; Sonia Moreno; Rafael Molina

• Publisher: Elsevier Science
• Year: 2011
• Tongue: English
• Weight: 704 KB
• Volume: 36
• Category: Article
• ISSN: 0360-3199
• DOI: 10.1016/j.ijhydene.2010.10.096

✦ Synopsis

Mineral clay modified with Al, polyvinyl alcohol (PVA) and microwaves was used as a support to obtain a NiePr catalyst. This catalytic system was evaluated in the reforming of methane with CO 2 . The experiments were carried out under drastic conditions for 300 min, with a 50/50 CH 4 /CO 2 mixture, total flux of 80 mL min À1 , without dilution gas (WHSV ¼ 96 Lg À1 h À1 ) and without previous reduction. The effect of the calcination temperature of the materials was studied at 500 C and 800 C as well as the effect of Pr (evaluating nominal quantities of 0, 1, 3 and 5%). The calcination temperature of the solid influenced the formation of the NiO species which had an effect on the activity and formation of coke on the material. The Pr had a promoter effect on the activity of the catalysts increasing the conversions of the CH 4 as well as the CO 2 . The formation of coke for the catalysts calcined at 500 C presented a correlation with the praseodymium content while for those catalysts calcined at 800 C there was no formation of coke.