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Metal oxide/TiO2 nanocatalyst and preparation method thereof

A nano-catalyst and oxide technology, applied in the direction of metal/metal oxide/metal hydroxide catalyst, physical/chemical process catalyst, chemical instrument and method, etc., to achieve the effect of simple equipment, stable structure and easy preparation

Inactive Publication Date: 2014-05-28
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

So far, no porous material can match MOFs in terms of richness of channels and the diversity and diversity of materials.

Method used

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  • Metal oxide/TiO2 nanocatalyst and preparation method thereof
  • Metal oxide/TiO2 nanocatalyst and preparation method thereof
  • Metal oxide/TiO2 nanocatalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Preparation of Metal Oxide / TiO with Complementary Metal-Organic Compound Structure Using Metal-organic Copper Tricarboxylate (CuBTC) as Template and Titanium Isopropoxide as Titanium Source 2 nanocatalysts.

[0035] (1) Synthesis of template: Mix copper nitrate trihydrate aqueous solution and trimesic acid / ethanol solution (volume ratio 1:1) and transfer to a hydrothermal kettle to react at 80°C for 10 hours; dissolve the product obtained above in two In the methyl chloride solvent, after centrifugation at room temperature for 3 times, the metal-organic compound precipitated from the lower layer was dried for 12 hours at 100° C., the centrifugation process was selected at a speed of 4000 rpm, and the centrifugation time was 2 minutes;

[0036](2) Introduction of titanium source: heat the above product to 140°C under vacuum and keep it for 18 hours. After cooling down to room temperature, add 10ml of titanium isopropoxide to 2g of the product, and continue vacuuming, mai...

Embodiment 2

[0041] Preparation of Metal Oxide / TiO with Complementary Metal-Organic Compound Structure Using Metal-organic Copper Tricarboxylate (FeBDC) as Template and Titanium Isopropoxide as Titanium Source 2 nanocatalysts.

[0042] (1) Synthesis of the template: Mix ferric chloride hexahydrate aqueous solution with terephthalic acid / N,N-dimethylformamide solution (volume 15 mL) and transfer to a hydrothermal kettle to react at 120°C for 7 hours; The product obtained above was soaked in ethanol at 60°C for 3 hours, centrifuged for 3 times, and the metal organic compound precipitated from the lower layer was dried at 60°C for 24 hours. During the centrifugation process, the rotation speed was 4500 rpm, and the centrifugation time was 1 minute;

[0043] (2) Introduce titanium source: heat the above product to 250°C under vacuum and keep it for 12 hours. After cooling down to room temperature, add 4 ml titanium isopropoxide to 600 mg product, and continue vacuuming. The dynamic vacuum time...

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Abstract

The invention discloses a metal oxide / TiO2 nanocatalyst and a preparation method thereof. The method takes a metal organic compound as a template and comprises the steps of introducing a titanium source, hydrolyzing the titanium source and removing the template to prepare the metal oxide / TiO2 nanocatalyst, wherein the metal organic compound is one of CuBTC, MIL-101(Cr) or MIL-101(Fe); the titanium source is isopropyl titanate or butyl titanate. Through the preparation method, the metal organic compound is introduced as a template agent, so that the template agent has the advantages of being convenient to prepare, simple and available, and easy to remove in a later stage; according to the key point, pore diameters of the template can be flexibly adjusted by changing the type and the number of ligands, so that a TiO2 material with different pore diameters, a complementary structure of the metal organic compound and a high specific surface can be prepared; the TiO2 prepared by the method has a good structure and a great specific surface area and can realize breakthrough of application of the TiO2 in various fields.

Description

technical field [0001] The invention belongs to the field of high specific surface area catalyst preparation, in particular to a metal oxide / TiO 2 Nanocatalyst and its preparation method. Background technique [0002] TiO 2 It is an indispensable inorganic functional material. It is widely used in many fields such as new energy batteries, purification and sensitive sensors because of its low cost, non-toxic stability and strong oxidation. Studies have shown that TiO prepared after certain treatment 2 Photocatalyst, which has remarkable effects in the degradation of organic matter, air purification and treatment of polluted water, which is also the 2 One of the reasons why it has become a popular functional material in recent years. However, the TiO prepared by prior art 2 The specific surface area it has does not meet the requirements of the experiment, so finding a method that can increase its specific surface area is useful for broadening the TiO 2 The further applic...

Claims

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Application Information

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IPC IPC(8): B01J23/72B01J23/745B01J23/26
Inventor 汤儆江莉龙戚鑫鑫王曼清曹彦宁
Owner FUZHOU UNIV
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