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Titanium dioxide and gold material composite catalyst and preparation method thereof

A technology of composite catalyst and titanium dioxide, which is applied in the direction of catalyst activation/preparation, metal/metal oxide/metal hydroxide catalyst, physical/chemical process catalyst, etc., to achieve the effect of promoting catalytic effect, promoting synthesis effect and high specific surface area

Pending Publication Date: 2020-11-10
安徽旭晶粉体新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Most of the existing catalysts are compound type, and how the compound type catalyst can achieve a better catalytic effect by combining two substances, so this patent needs further exploration and processing

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A kind of composite catalyst of titanium dioxide and gold material of the present embodiment comprises the raw material of following weight portion:

[0026] 35 parts of titanium dioxide, 25 parts of Au, 3 parts of rare earth additives, 15 parts of silica sol, 50 parts of ethanol medium, and 5 parts of ionic liquid.

[0027] The preparation method of the rare earth additive in this example is: fluoride the rare earth carbonate and ammonium fluoride, the fluorination temperature is 100°C, and the fluorination time is 45 minutes to obtain the rare earth fluoride, and then send it into the plasma box Bombing treatment is carried out, the bombing power is 300W, the bombing time is 10min, then thermal activation treatment, and finally hot-pressing and calcining for 10min, the hot-pressing pressure is 15MPa, and the hot-pressing temperature is 600°C.

[0028] The conditions of the thermal activation treatment in this embodiment are as follows: first raise the temperature to 2...

Embodiment 2

[0037] A kind of composite catalyst of titanium dioxide and gold material of the present embodiment comprises the raw material of following weight portion:

[0038] 45 parts of titanium dioxide, 35 parts of Au, 7 parts of rare earth additives, 25 parts of silica sol, 60 parts of ethanol medium, and 15 parts of ionic liquid.

[0039] The preparation method of the rare earth additive in this example is as follows: fluoride the rare earth carbonate and ammonium fluoride, the fluorination temperature is 150°C, and the fluorination time is 55 minutes to obtain the rare earth fluoride, and then send it into the plasma box Bombing treatment is carried out, the bombing power is 600W, the bombing time is 20min, then thermal activation treatment, and finally hot-pressing and calcining for 20min, the hot-pressing pressure is 25MPa, and the hot-pressing temperature is 1000°C.

[0040] The conditions of the thermal activation treatment in this embodiment are as follows: first raise the tem...

Embodiment 3

[0049] A kind of composite catalyst of titanium dioxide and gold material of the present embodiment comprises the raw material of following weight portion:

[0050] 40 parts of titanium dioxide, 30 parts of Au, 5 parts of rare earth additives, 20 parts of silica sol, 55 parts of ethanol medium, and 10 parts of ionic liquid.

[0051] The preparation method of the rare earth additive in this example is: fluoride the rare earth carbonate and ammonium fluoride, the fluorination temperature is 125°C, and the fluorination time is 50 minutes to obtain the rare earth fluoride, and then send it into the plasma box Bombing treatment is carried out, the bombing power is 450W, the bombing time is 15min, then thermal activation treatment, and finally hot-pressing and calcining for 15min, the hot-pressing pressure is 20MPa, and the hot-pressing temperature is 800°C.

[0052] The conditions of the thermal activation treatment in this embodiment are: first raise the temperature to 250°C at a ...

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Abstract

The invention discloses a titanium dioxide and gold material composite catalyst, which is prepared from the following raw materials in parts by weight: 35-45 parts of titanium dioxide, 25-35 parts ofAu, 3-7 parts of rare earth additive, 15-25 parts of silicon dioxide sol, 50-60 parts of ethanol medium and 5-15 parts of ionic liquid. According to the catalyst prepared from titanium dioxide and thegold material, titanium dioxide and Au are adopted as main synthesis agents, the added rare earth additive aims at promoting the synthesis effect of titanium dioxide and Au and can also improve the coordination of titanium dioxide and Au to promote the catalytic effect, and the added silicon dioxide sol can promote raw materials in a reaction medium to be more easily combined since the silicon dioxide sol can provide a very high specific surface area, so that the silicon dioxide sol is used as an intermediate medium, the product raw materials are mutually combined under the action of the medium, and the combination degree of the product is improved.

Description

technical field [0001] The invention relates to the technical field of composite catalysts, in particular to a composite catalyst of titanium dioxide and gold materials and a preparation method thereof. Background technique [0002] The effect of a catalyst in a chemical reaction is called catalysis. Solid catalysts are also called catalysts in industry, and their composition, chemical properties and quality do not change before and after the reaction; their relationship with the reaction system is like the relationship between a lock and a key, with a high degree of selectivity (or specificity) ). A catalyst does not have a catalytic effect on all chemical reactions. For example, manganese dioxide plays a catalytic role in the thermal decomposition of potassium chlorate to speed up the chemical reaction rate, but it does not necessarily have a catalytic effect on other chemical reactions. Certain chemical reactions are not the only catalysts. For example, magnesium oxide,...

Claims

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Application Information

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IPC IPC(8): B01J21/06B01J23/52B01J23/66B01J37/00B01J37/08B01J37/26B01J37/34
CPCB01J37/26B01J37/349B01J37/08B01J37/0018B01J21/063B01J23/66B01J23/52
Inventor 江建平陈正祥江建安
Owner 安徽旭晶粉体新材料科技有限公司
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