Preparing method of iridium ruthenium rubidium zirconium four-element composite oxide inert anode
A composite oxide, inert anode technology, applied in electrodes, electrolysis process, electrolysis components, etc., to achieve the effects of long service life, good oxygen evolution catalytic activity, and simple preparation method.
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Embodiment approach 1
[0021] First, a titanium plate of 10mm×10mm×1mm was washed with alkali at 60°C for 30 minutes, etched with 10% oxalic acid at 90°C for 2.5 hours, ultrasonically cleaned with deionized water for 10 minutes, and then dried for use.
[0022] Weigh a certain mass of RbCl, RuCl 3 、H 2 IrCl 6 Miscible with tetrabutyl zirconate.
[0023] The miscible RbCl, RuCl 3 、H 2 IrCl 6 The mixed solution of tetrabutyl zirconate and tetrabutyl zirconate is dissolved in a mixed solvent of n-butanol and isopropanol mixed in a ratio of 1:1 to obtain a coating solution. RbCl, RuCl in the coating solution 3 、H 2 IrCl 6 The molar concentrations of tetrabutyl zirconate and tetrabutyl zirconate were 0.020, 0.084, 0.036 and 0.060 mol / L, respectively.
[0024] The prepared coating solution was evenly coated on the surface of the pretreated titanium substrate with a brush, dried at 120°C for 10 minutes, then sintered at 450°C for 10 minutes, and cooled to room temperature after taking it out. Aft...
Embodiment approach 2
[0027] First, a titanium plate of 10mm×10mm×1mm was washed with alkali at 60°C for 30 minutes, etched with 10% oxalic acid at 90°C for 2.5 hours, ultrasonically cleaned with deionized water for 10 minutes, and then dried for later use.
[0028] Weigh a certain mass of RbCl, RuCl 3 、H 2 IrCl 6 Miscible with tetrabutyl zirconate.
[0029] RbCl, RuCl after standing 3 、H 2 IrCl 6 The mixed solution with tetrabutyl zirconate is dissolved in a mixed solvent of n-butanol and isopropanol mixed in a ratio of 1:1 to obtain a coating solution. RbCl, RuCl in the coating solution 3 、H 2 IrCl 6 The molar concentrations of tetrabutyl zirconate and tetrabutyl zirconate were 0.040, 0.030, 0.030 and 0.100 mol / L, respectively.
[0030] The prepared coating solution was evenly coated on the surface of the pretreated titanium substrate with a brush, dried at 120°C for 15 minutes, then sintered at 500°C for 15 minutes, and cooled to room temperature after taking it out. After the above st...
Embodiment approach 3
[0033]First, a titanium plate of 10mm×10mm×1mm was washed with alkali at 60°C for 30 minutes, etched with 10% oxalic acid at 90°C for 2.5 hours, ultrasonically cleaned with deionized water for 10 minutes, and dried for later use.
[0034] Weigh a certain mass of RbCl, RuCl 3 、H 2 IrCl 6 Miscible with tetrabutyl zirconate.
[0035] RbCl, RuCl after standing 3 、H 2 IrCl 6 The mixed solution with tetrabutyl zirconate is dissolved in a mixed solvent of n-butanol and isopropanol mixed in a ratio of 1:1 to obtain a coating solution. RbCl, RuCl in the coating solution 3 、H 2 IrCl 6 The molar concentrations of tetrabutyl zirconate and tetrabutyl zirconate were 0.060, 0.024, 0.056 and 0.060 mol / L, respectively.
[0036] The prepared coating solution was evenly coated on the surface of the pretreated titanium substrate with a brush, dried at 120°C for 15 minutes, then sintered at 400°C for 15 minutes, and cooled to room temperature after taking it out. After the above steps we...
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