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Metal/titanic oxide catalyst for catalytic oxidation and preparation thereof

A titanium dioxide, catalytic oxidation technology, applied in the direction of metal/metal oxide/metal hydroxide catalyst, physical/chemical process catalyst, chemical instrument and method, etc. Problems such as low efficiency, to achieve the effect of high catalytic effect, shortened reaction time and shortened time

Inactive Publication Date: 2008-11-05
NANJING UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a kind of metal / titanium dioxide (Metal / TiO 2 Abbreviated as M / TiO 2 ) catalyst, another object of the present invention is to provide the preparation method of above-mentioned catalyst

Method used

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  • Metal/titanic oxide catalyst for catalytic oxidation and preparation thereof

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Embodiment 1

[0029] 1, prepare solution, dissolve copper nitrate salt in ethylene glycol, molar concentration is 0.05mol / L; 2, titanium tetrachloride solution, its molar concentration is 1mol / L; 3, above-mentioned two kinds of solutions are mixed by copper salt and The molar ratio of the titanium source is 0.05:1. After mixing, add 20 mL of sodium acetate solution with a molar concentration of 0.01 mol / L per liter of titanium source solution as a stabilizer, and add 50 mL of sodium acetate solution with a molar concentration of 0.3 mol / L per liter of titanium source solution. L structure guide trialkylamine; 4. Use the ultrasonic irradiation solution with a frequency of 33KHZ to irradiate for 6 minutes to make it evenly distributed, and then the input frequency is 800MHz and the power is 100W electromagnetic wave energy to irradiate the solution, and the irradiation time is 30min; 5. 1. Under irradiation and reflux conditions, add NaOH solution while stirring, the molar concentration is 0.0...

Embodiment 2

[0032]1. Prepare the solution, prepare a mixed solution of two metal salts with a molar concentration of 1mol / L zinc nitrate and 1mol / L palladium nitrate in ethylene glycol; 2. Prepare titanium tetrachloride and butyl titanate The titanium sources mixed with esters have a molar concentration of 3mol / L and 5mol / L respectively, so that the total molar ratio of the metal salts to the titanium sources is 0.125:1; 50 mL of sodium bicarbonate with a molar concentration of 0.1 mol / L was added to the solution as a stabilizer, then a structure director, a mixture of trialkylamine and tetraalkylammonium hydroxide was added, and the concentrations were 0.5 mol / L and 1 mol / L respectively, The total amount of addition is 200mL per liter of titanium source solution; 4. Use 40KHZ ultrasonic irradiation for 30 minutes to make the solution evenly distributed, and then irradiate the solution with electromagnetic waves with a frequency of 900MHz and an input power of 1000W for 15 minutes; 5. Und...

Embodiment 3

[0035] 1. Prepare the solution, dissolve the combination of ferric sulfate and platinum sulfate in ethylene glycol, the molar concentrations are 4.5mol / L and 0.002mol / L respectively; 2, prepare the titanium source material of titanium tetrasulfate, the molar concentration 1mol / L, so that the molar ratio of metal salts and titanium sources is 3:1; 3. After mixing the above two solutions, add sodium acetate as a stabilizer, the molar concentration is 0.5mol / L, and the amount added is 0.5mol / L. Add 200mL of titanium source solution, then add tetraalkylammonium hydroxide as a structure guide, the molar concentration is 3mol / L, and the addition amount is 5mL per liter of titanium source solution; 4. Irradiate the solution with 80KHZ ultrasonic irradiation for 30min Make it evenly distributed, and then irradiate the solution with 900MHz energy input power of 10000W electromagnetic waves, first irradiating for 10 minutes; 5. Under the conditions of irradiation and reflux, add concentr...

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Abstract

The invention relates to a metal / titanic dioxide catalyst used for catalytic oxidation and a preparation method thereof. The method is mainly characterized in that: the salt of metal source is dissolved in glycol and added with a stabilizer and a structural directing molecule after being mixed with the solution of titanium source, thus acquiring a mixed solution; the solution is radiated to be evenly distributed by ultrasound and certain energy is used for radiating the solution; in the conditions of radiation and refluence, the mixed solution is stirred and added with an alkali liquor and continuously to be stirred after the adding of the alkali liquor is finished; the solution is taken out, cooled, filtered, washed and dried, thus obtaining the catalyst which consists of metal and titanic dioxide; and a molar ratio of the metal and the titanic dioxide is 0.05: 1-10: 1. The catalyst has the advantages of simple preparation and convenient operation, active components which are not easily lost, wide applicable pH range, and high catalytic activation, etc., thus being a good catalyst in certain advanced catalytic oxidation processes and has good performance by the test of samples.

Description

Technical field: [0001] The invention relates to a catalyst and a preparation method thereof, in particular to a metal / titanium dioxide (M / TiO 2 ) catalyst and its preparation method. Background technique: [0002] With the continuous development of the modern chemical industry, the quantity and types of refractory organic matter entering the water body through various channels have increased sharply, causing serious pollution to the water environment and directly threatening human health. The important aspects of the environmental hazards of these toxic organic chemicals are manifested in the chemical carcinogenic, teratogenic, and mutagenic effects, that is, the toxicological effects of the ecological food chain, the "feminization" effect of the environment, the promotion of red tides, and the algae toxin effects. In water treatment engineering, wastewater containing refractory organic matter is usually difficult to be treated by biological methods. Its stable chemical st...

Claims

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Application Information

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IPC IPC(8): B01J23/72B01J23/60B01J23/89B01J21/06C02F1/30
Inventor 徐炎华朱骏赵浩
Owner NANJING UNIV OF TECH
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