Non-uniform combustion catalyst and uses thereof
A combustion catalyst, non-uniformly distributed technology, applied in physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, etc., to achieve the effect of reducing ignition point and efficient utilization
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Embodiment 1
[0050] Prepare rhodium sulfate, platinum nitrate, cobalt chloride, nickel nitrate, and chromium sulfate solutions with a concentration of 0.02mol / L solution, make 0.1mol / L solution of oxalic acid, and immerse the dried alumina pellets in the oxalic acid solution , the immersion time is 10 minutes, and the above impregnated γ-Al 2 o 3 The pellets were dried in an oven at 100°C for 5 minutes; the dried γ-Al 2 o 3 The pellets were immersed in the metal salt solution of equal volume mixed above for 10 minutes, and the pH value of the solution was controlled by hydrochloric acid and sodium hydroxide during the immersion process; the impregnated γ-Al 2 o 3 The pellets were taken out and dried at 80°C for 4 hours; the dried γ-Al 2 o 3 The pellets were calcined at 600°C for 4 hours to prepare the catalyst. The weight of metal oxide in the catalyst accounts for 5%.
Embodiment 2
[0052] Rhodium chloride is made into a solution with a concentration of 3mol / L; oxalic acid is made into a solution of 0.1mol / L, and the dried alumina pellets are immersed in the oxalic acid solution for 15 minutes. γ-Al 2 o 3 The pellets were dried in an oven at 120°C for 10 minutes; the dried γ-Al 2 o 3 The balls were immersed in the metal salt solution for 20 minutes, and the pH value of the solution was controlled by hydrochloric acid and sodium hydroxide during the immersion process; the impregnated γ-Al 2 o 3 The pellets were taken out and dried at 100°C for 4 hours; the dried γ-Al 2 o 3 The pellets were calcined at 500°C for 4 hours to prepare the catalyst. The weight of metal oxide in the catalyst accounts for 1%.
Embodiment 3
[0054] Make nickel chloride into a solution with a concentration of 0.005mol / L, chromium nitrate and cobalt sulfate into a 0.1mol / L solution, mix the three solutions 1:1:2, and make oxalic acid into a 0.2mol / L solution. The dried alumina pellets were immersed in the oxalic acid solution for 10 minutes, and the above impregnated γ-Al 2 o 3 The pellets were dried in an oven at 100°C for 10 minutes; the dried γ-Al 2 o 3 The pellets were immersed in the above metal salt solution for 15 minutes, and the pH value of the solution was controlled with hydrochloric acid and sodium hydroxide to be 6 during the immersion process; the γ-Al 2 o 3 The pellets were taken out and dried at 100°C for 3 hours; the dried γ-Al 2 o 3 The pellets were calcined at 500°C for 3 hours to prepare the catalyst. The weight of metal oxide in the catalyst accounts for 3%.
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