| 摘要 |
The invention relates to a method for producing hydrogen gas (H2), alumina (AI2O3) and sodium carbonate (Na2CO3) in a single stage by causing particles of aluminum (Al) measuring between 0.5 microns and 500 millimeters to react, characterized in that the aluminum particles (Al) must be pure (unalloyed) and the aqueous solution of sodium hydroxide (NaOH) must have concentrations of between 1 molar and 10 molar and a saturation preferably of 4 molar. The aluminum (Al) used can be scraps of aluminum waste; the sodium hydroxide (NaOH) is in powder form for a better preparation of the solutions of sodium hydroxide (NaOH) and water (H2O); and the aluminum (Al) is particles of aluminum (Al), placed in a receptacle of a certain size having a non-metal lining, which withstands temperatures between ambient temperature and 250°C, and is hermetically covered, creating a vacuum, and following the addition of the aqueous sodium hydroxide (NaOH), preferably 4 molar, the reaction is carried out under ambient conditions of pressure and temperature and without requiring additional heat energy to initiate said chemical reaction. The white precipitate is alumina (AI2O3), separated through decantation and dried, and the sodium hydroxide solution (NaOH) transforms the carbon dioxide (CO2) found in the atmosphere by bubbling air in said solution; the solution subsequently evaporates, resulting in sodium carbonate (Na2CO3) and recovery of the water used in the method. None of the phases of said method produces any kind of pollutant; the receptacle where the chemical reaction takes place is also used as a receptacle for storing the hydrogen (H2); and the hydrogen (H2) can be obtained where this gas is needed, thereby avoiding transport and storage of (H2) in special containers.
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