The chemical equation of aluminum powder combustion
Chemical equation: 4Al + 3O₂==ignite== 2Al₂O₃
Phenomenon: Aluminum reacts violently with oxygen to produce dazzling white light, emit a lot of heat, and produce a dull and dull off-white solid. The catalytic combustion process is carried out in a catalytic combustion device. The organic waste gas is preheated to 200-400°C through the heat exchanger, and then enters the combustion chamber. When passing through the catalyst bed, the hydrocarbon molecules and the oxygen molecules in the mixed gas are adsorbed on the surface of the catalyst and activated. As surface adsorption reduces the activation energy of the reaction, hydrocarbons and oxygen molecules are rapidly oxidized at a lower temperature to produce carbon dioxide and water.
Write down the chemical formulas of the reactants and products based on the experimental facts. The reactant is on the left, the product is on the right, and the middle is connected by a horizontal line, such as: H2+O2——H2O, H2O——H2+O2.
According to the principle that the types and numbers of atoms before and after the reaction remain unchanged, the chemical formulas of the reactants and products are matched with appropriate stoichiometric numbers to make the number of atoms of various elements equal before and after the reaction, and then the horizontal line becomes equal number. After balancing, the ratio of the stoichiometric numbers before the chemical formula should be the simplest integer ratio, such as: 2H2+O2=2H2O, 2H2O= 2H2+O2. The answer is based on the reaction of iron and aluminum with oxygen and the reaction of hematite and carbon monoxide to produce iron at high temperatures.
The phenomenon of iron wire burning in oxygen burns violently, sparks are emitted, black solid is generated, and a lot of heat is released. The chemical equation for the reaction is: 3Fe+2O2=Fe3O4. At room temperature, aluminum and oxygen can also react to form a dense oxide protective film on its surface. Write the chemical equation 4Al+3O2=2Al2O3, and write the chemical reaction of hematite and carbon monoxide to produce iron at high temperature Reaction formula
Yes: Fe2O3+3CO═2Fe+3CO2;
So the answer is: it burns violently, sparks in all directions, produces a black solid, and emits a lot of heat. 3Fe+2O2═ Fe3O4; dense oxide protective film. 4Al+3O2═2Al2O3; Fe2O3+3CO═2Fe+3CO2.