Deactivation of Ni spinel derived catalyst during the oxidative steam reforming of raw bio-oil Egileak: A. Arandia, A. Remiro, B. Valle, J. Bilbao, Ana G. Gayubo Urtea: 2020 Aldizkaria: Fuel Liburukia: 276 DOI: 10.1016/j.fuel.2020.117995