| 摘要 |
PURPOSE: A manufacturing method of a NiO-MgO(Nickel Oxide-Magnesium Oxide) solid solution nano-catalyst and NiO-MgO solid solution nano-powder manufactured by using the same are provided to improve thermal stability, carbon-deposition resistivity, and catalyst activity even in a high-temperature reaction process generally above 750 >= like a methane partial oxidation process, and to process more methane flow quantity at the same temperature as well as to offer a high methane conversion rate and high selectivity of hydrogen and carbon monoxide at a relatively low temperature(650 >=). CONSTITUTION: A manufacturing method of a NiO-MgO solid solution nano-catalyst includes the following steps: a step of quantifying Ni(Nickel) and MgO(Magnesium-Oxide) raw materials, compounding the quantified raw materials with a conventional method through a step containing the process of pulverization, mixture, and calcination, and preparing precursors in order to form desired NiO-MgO incorporation composition; a step of injecting the precursors into a high-temperature and high-enthalpy thermal flow field and heat-treating during the flight, and then converting Ni particles into droplets and vapor by melting and vaporizing, and converting MgO particles into the shape of a nano-stick by phase transition; and a step of rapidly cooling the Ni droplets and vapor, generated through the heat-treatment during the flight, and MgO carriers, converted into the shape of a nano-stick by phase transition, at the same time and allowing Ni particles less than 100 nm to be uniformly distributed and condensed on the MgO nano-sticks, and enabling Ni atoms to be widely incorporated into MgO lattices during this process, thereby synthesizing an NiO-MgO solid solution composite material. |
