Development of Ni catalysts with low metal content and improved stability in the dry reforming of methane to syngas

10.18453/rosdok_id00002741 Ha, Quan Luu Manh Quan Luu Manh Ha http://d-nb.info/gnd/1191941779 https://orcid.org/0000-0003-3717-1033 Development of Ni catalysts with low metal content and improved stability in the dry reforming of methane to syngas Universität Rostock 2019 540 Chemistry & allied sciences 2019 en http://purl.uni-rostock.de/rosdok/id00002741 urn:nbn:de:gbv:28-rosdok_id00002741-9 Catalysts with 2.5 wt% Ni supported on MgO-Al2O3 were developed for CH4 dry reform-ing (DRM) that are stable at either mild (stoichiometric) or severe (CH4-rich) conditions. Solid materials were characterized with suitable methods. Catalysts with NiO-MgO-Al2O3 solid solution were active even at 500 °C. In stoichiometric DRM, Ni catalyst modified with La and citric acid reduced both Ni re-oxidation and agglomeration, preserving high activity over 160 h. Besides, proper support pre-treatment or adding Gd3+ both offered outstandingly coking-resistant Ni-based catalysts for CH4-rich DRM over 100 h.