a kind of ceo 2 -zro 2 -la 2 o 3 -al 2 o 3 Preparation method of fiber oxygen storage material
A technology of oxygen storage materials and fibers, which is applied in the direction of metal/metal oxide/metal hydroxide catalysts, fiber treatment, chemical instruments and methods, etc., can solve the problems of affecting catalytic conversion efficiency, poor stability of oxygen storage materials, carrier storage/ Oxygen release ability decline and other problems, to achieve good thermal stability and reduction performance, reduce production costs, prevent the effect of interaction
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[0026] The present invention CeO 2 -ZrO 2 -La 2 o 3 -Al 2 o 3 A preparation method for a fiber oxygen storage material, the preparation method comprising the steps of:
[0027] Step 1: Mix anhydrous aluminum chloride, cerium chloride, zirconium chloride and lanthanum chloride according to a certain molar ratio of metal elements, and then add it into a mixed solvent of dichloromethane and isopropyl ether with a volume ratio of 30:1. Magnetic stirring at room temperature for 1 to 3 hours;
[0028] Step 2: put the solution stirred in step 1 into an oven, and dry it at a constant temperature of 60-100°C for 1-3 hours to obtain a white powder;
[0029] Step 3: Add the white powder obtained in Step 2 to the polymer used for solution electrospinning, and perform magnetic stirring at room temperature for 1-3 hours to prepare a precursor solution;
[0030] Step 4: Spin the precursor solution in step 3 by electrospinning technology and let it stand to form a stable and uniform fi...
Embodiment 1
[0039] In this example CeO 2 -ZrO 2 -La 2 o 3 -Al 2 o 3 The preparation method of fiber oxygen storage material, such as figure 1 shown, including the following steps:
[0040] Step 1: Follow n Ce :n Zr :n La :n Al Mix anhydrous aluminum chloride, cerium chloride, zirconium chloride and lanthanum chloride at a ratio of 1:1:0.06:2, add 30ml of dichloromethane and 0.95ml of isopropyl ether mixed solvent, and stir magnetically for 2 hours at room temperature;
[0041] Step 2: put the solution stirred in step 1 into an oven, and dry it at a constant temperature of 80°C for 2 hours to obtain a white powder;
[0042] Step 3: Pour the white powder obtained in step 2 into 13ml of absolute ethanol and 7ml of N-N dimethylformamide mixed solvent, and add 0.8g of polyvinylpyrrolidone, and magnetically stir for 2 hours at room temperature to obtain a spinning precursor solution;
[0043] Step 4: Using the electrospinning device, place the syringe containing the precursor solutio...
Embodiment 2
[0047] In this example CeO 2 -ZrO 2 -La 2 o 3 -Al 2 o 3 The preparation method of fiber oxygen storage material, such as figure 1 shown, including the following steps:
[0048] Step 1: Follow n Ce :n Zr :n La :n Al Mix anhydrous aluminum chloride, cerium chloride, zirconium chloride and lanthanum chloride at a ratio of 1:1:0.14:2, add 30ml of dichloromethane and 0.95ml of isopropyl ether mixed solvent, and stir magnetically for 2 hours at room temperature;
[0049] Step 2: put the solution stirred in step 1 into an oven, and dry it at a constant temperature of 80°C for 2 hours to obtain a white powder;
[0050] Step 3: Pour the white powder obtained in step 2 into 13ml of absolute ethanol and 7ml of N-N dimethylformamide mixed solvent, and add 0.8g of polyvinylpyrrolidone, and magnetically stir for 2 hours at room temperature to obtain a spinning precursor solution;
[0051] Step 4: Using the electrospinning device, place the syringe containing the precursor solutio...
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