Search academic texts

Information × Registration Number 0212U009099, 0111U006171 , R & D reports Title Developing new and improving existing technologies for highly productive nanophase catalysts for environmental protection and hydrogen energetics popup.stage_title Head Orlyk Svitlana Mykytivna, Registration Date 29-12-2012 Organization L.V.Pysarzhevsky Institute of Physical Chemistry of National Academy of Science of Ukraine popup.description2 The composition of nickel-aluminum catalysts on structured ceramic supports for the process three - reforming of methane (TRM) is optimized. It is shown the introduction of oxides of rare earth elements (OREE: CeO2, La2O3) in the catalysts Ni/Al2O3/kordierit prevents of formation of nickel-aluminum spinel, that reduces the temperature of the reduction of nickel oxide with the formation of fine crystallites of Ni and, as a result, increases the stability of the active phase of the catalysts to oxidation. OREE also promote to increasing of the specific surface area of the secondary support Al2O3, prevent its transformation into a high-temperature modification, reduce carbon deposition by accelerating the oxidation of carbon-containing compounds, which ensures the stability of the TPM process, including under autothermal conditions. It is shown that composites based on Y (Sc) SZ, doped CeO2, show high activity (50 - 95% methane conversion) and stability (40 h) in the reactions of partial oxidation of methane, reforming of methane by steam and carbon dioxide in the temperature range 600 - 800o C, typical for SOFC. The presence of platinum group metals (PGM: Pd, Pt, Rh) in the above composites improves sulfur-stability of the catalysts due to PGM activity in the oxidation of sulfur dioxide. Developed monolithic catalysts on the ceramic honeycomb blocks of deep oxidation of hydrocarbons that do not contain PGM and provide 100% conversion of methane to CO2 in the temperature range 650-750 °. Product Description popup.authors Губарені Євген Віталійович Канцерова Марина Рашидівна Соловйов Сергій Олександрович Чедрик Валерій Іванович Шашкова Тетяна Костянтинівна popup.nrat_date 2020-04-02 Close