<b>Ni-SiO₂ and Ni-Al₂O₃ sol-gel catalysts applied to methane reforming with CO₂</b> - DOI: 10.4025/actascitechnol.v27i1.1492

Abstract

The dry reforming reaction of methane comes as a promising process of syngas and hydrogen. Nickel catalysts on Al₂O₃ and SiO₂ were synthesized by sol-gel method, with metalic load of 8% weight. The catalysts were characterized by temperature programmed reduction (TPR), termogravimetry analysis (TGA) and specific surface area measurements (BET). The dry reforming reaction was performed in a micro reactor packed with 500 mg of catalyst, previously activated in atmosphere of hydrogen. The dry reforming tests were done at 800oC and atmospheric pressure by a period of 12 hours, with a molar ratio in the feeding of [CO₂:CH₄] = 6. The products of the reaction were analyzed by gas chromatograph. The Ni-SiO₂ catalysts showed better performance