Ni-Mg/Al2O3 catalysts prepared with methods of co-precipitation (CP), homogeneous precipitation (HP) and acid-base pairing (ABP) were tested for syngas methanation at 623-923 K in a stainless steel fixed bed reactor and further characterized to justify their performances. The Ni-Mg/Al2O3 catalysts prepared with CP using NH4OH, NaOH and Na2CO3 as th...
CO methanation reaction over a nanosized NiCo aerogel catalyst (NiCo) for synthetic natural gas production was investigated in a magnetic fluidized bed (MFB) reactor. The results indicated that the NiCo catalyst showed poor fluidization behavior, while the fluidization quality of the catalyst can be greatly improved by introducing an axial uniform ...
Autothermal carbon dioxide reforming of methane was studied over trimetallic NiCoMn/ZrO2 catalyst promoted with different promoters (Ce, La, Ca, K) aiming to improve the performance of the catalyst and increase their resistance to coking. The promoted catalysts prepared by a coprecitation method showed metal sizes less than 10 nm and were studied w...
Nickel catalysts supported on the perovskite oxide CaTiO3 (CTO) were prepared by an impregnation method for CO methanation to produce synthetic natural gas (SNG). X-Ray diffraction, nitrogen adsorption, scanning electron microscopy, transmission electron microscopy, thermogravimetric analysis, H-2-temperature programmed reduction and desorption, an...
We report the preparation and characterization of Ni nanoparticles supported on barium hexaaluminate (BHA) as CO methanation catalysts for the production of synthetic natural gas (SNG). BHA with a high thermal stability was synthesized by a coprecipitation method using aluminum nitrate, barium nitrate, and ammonium carbonate as the precursors. The ...
MoNi/gamma-Al2O3 catalysts were prepared by the impregnation method. The catalyst samples were characterized by XRD and TPR. The effects of Mo promoter content and the catalyst reducing temperature Oil hydrotreatment activity of the catalyst were studied under 200 degrees C and 3 MPa hydrogen pressure using acetic acid as the model compound. The XR...
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
