Flare gases processing over highly dispersed Ni/Ce0.75Zr0.25O2 catalysts for methanotroph-based biorefinery

• Highly dispersed Ni/Ce 0.75 Zr 0.25 O 2 catalysts. • Impregnation by joint aqueous solution of ethylene glycol and Ni(II) nitrate. • Steam conversion of C 2+ -hydrocarbons into CH 4 , CO 2 and H 2 . • The resulted mixtures could be used as a feed for methanotrophs. X wt.% Ni/Ce 0.75 Zr 0.25 O 2 catalysts (X = 5, 9, 12, 15) have been prepared by the incipient wetness impregnation technique in the presence of ethylene glycol (EG) and tested in...