| abstract |
The present invention, a) alumina (Alumina), silica (Silica), and titanium (Titanium) in an aqueous solution in an oxide selected from the group consisting of mixed, b) after stirring the mixture to prevent aggregation of the raw materials The pH is adjusted to 3 or less, c) the oxide particle size (D50) is milled to be 3 to 6 μm, d) a binder is added to the mixed slurry solution, and the pH is adjusted to 3 or less. Thereafter, the precious metal solution of Pt and Pd is added-the Pt / Pd ratio is 2 to 4: 1, and mixed, e) the mixture is added with zeolite to the slurry solution, and the pH is adjusted to 6 to 7 Adjusting, f) to prepare a final catalyst slurry by adding cellulose and a wetting agent for dispersion of the solution in the mixture slurry solution and uniformity of coating, and coating on a carrier, the method for producing a diesel oxidation catalyst and the same On the way It relates to a diesel oxidation catalyst prepared by, it was shown that the diesel oxidation catalyst of the present invention has an excellent effect in thermal durability. |