Combination Of Co_2 Reforming And Partial Oxidation Of Methane To Produce Syngas Over Ni/sio_2 And Ni-al_2o_3/sio_2 Catalysts With Different Precursors

摘要

Ni/SiO_2 and Ni-Al_2O_3/SiO_2 catalysts were prepared by incipient wetness impregnation using citrate and nitrate precursors and tested with a reaction of combination of CO_2 reforming and partial oxidation of methane to produce syngas (H_2/CO). The catalytic activity of Ni/SiO_2 and Ni-Al_2O_3/SiO_2 greatly depended on interaction between NiO and support. NiO strongly interacted with support formed small nickel particles (about 4 nm for NiSC which is abbreviation of Ni/SiO_2 prepared with Nickel citrate precursor) after reduction. The small nickel particles over NiSC catalysts exhibited a good catalytic performance.