J. env. chem. eng. J. env. chem. eng. Testing Ni-based catalysts for the methanation of industrial gases at different levels of sulfur poisoning: From catalysts formulation optimization to kinetics Bailera Manuel Universidad de Zaragoza Bacariza Carmen Teixeira Paula Legaz Jorge García-Mariaca Alexander Universidad de Zaragoza Peña Begoña Universidad de Zaragoza Lisbona Pilar Universidad de Zaragoza 2025 research-article