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Preparation method of hydrogen chloride oxidation catalyst

A technology of oxidation catalyst and hydrogen chloride, which is applied in the direction of catalyst activation/preparation, metal/metal oxide/metal hydroxide catalyst, preparation with chloride, etc., which can solve the problem of low utilization efficiency of precious metal ruthenium, difficulty in industrial scale-up preparation, and water consumption Large and other problems, to achieve the effect of overcoming energy consumption and pollution, improving production yield, and reducing water consumption

Active Publication Date: 2018-04-24
XIAN ORIGIN CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a method for preparing a hydrogen chloride oxidation catalyst in view of the above-mentioned deficiencies in the prior art, which can solve the problem of high energy consumption, large water consumption, complicated steps and difficulty in industrial scale-up Preparation, low utilization efficiency of precious metal ruthenium, etc.

Method used

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  • Preparation method of hydrogen chloride oxidation catalyst
  • Preparation method of hydrogen chloride oxidation catalyst
  • Preparation method of hydrogen chloride oxidation catalyst

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Embodiment 1

[0028] The present embodiment provides a kind of preparation method of hydrogen chloride oxidation catalyst, and this method comprises the following steps:

[0029] Step 1, 0.14g commercially available RuCl 3 .nH 2 O (Ru mass content > 37%) was added to 50 g of distilled water to obtain a solution with a ruthenium mass content of 0.1%, named solution one;

[0030] Step 2, adding 20 g of commercially available 30% hydrogen peroxide into 20 g of distilled water to obtain a solution with a hydrogen peroxide content of 15%, named solution 2;

[0031] Step 3: According to the molar ratio of the ruthenium precursor, hydrogen peroxide, and titanium dioxide is 0.3:0.5:100, add the powdered titanium dioxide carrier (rutile type, Aladdin reagent) into the solution 1, and stir fully to obtain the solution 3; then add two drops of the solution Add solution three to obtain solution four;

[0032] Step 4: Warm up solution 4 to 80°C and keep it for 4 hours to obtain solution 5;

[0033] ...

Embodiment 2

[0037] The present embodiment provides a kind of preparation method of hydrogen chloride oxidation catalyst, and this method comprises the following steps:

[0038] Step 1, 0.68g of commercially available RuCl 3 .nH 2 O (Ru mass content > 37%) was added to 50 g of distilled water to obtain a solution with a ruthenium mass content of 0.5%, named solution one;

[0039] Step 2, add 20 g of commercially available 50% hydrogen peroxide to 20 g of distilled water to obtain a solution with a hydrogen peroxide content of 25%, which is named solution 2;

[0040] Step 3: According to the molar ratio of the ruthenium precursor, hydrogen peroxide, and titanium dioxide is 0.6:2:100, add the powdered titanium dioxide carrier (rutile type, Aladdin reagent) into the solution 1, and stir fully to obtain the solution 3; then add two drops of the solution Add solution three to obtain solution four;

[0041] Step 4: Warm up solution 4 to 90°C and keep it for 2 hours to obtain solution 5;

[0...

Embodiment 3

[0046] The present embodiment provides a kind of preparation method of hydrogen chloride oxidation catalyst, and this method comprises the following steps:

[0047] Step 1, 7.81g commercially available RuCl 3 .nH 2 O (Ru mass content > 37%) was added to 50 g of distilled water to obtain a solution with a ruthenium mass content of 5%, named solution one;

[0048] Step 2, a solution with a commercially available hydrogen peroxide content of 35%, named as solution 2;

[0049] Step 3: According to the molar ratio of the ruthenium precursor, hydrogen peroxide, and titanium dioxide is 3:10:100, add the powdered titanium dioxide carrier (rutile type, Aladdin reagent) into the solution 1, and stir fully to obtain the solution 3; then add two drops of the solution Add solution three to obtain solution four;

[0050] Step 4: Warm up solution 4 to 90°C and keep it for 2 hours to obtain solution 5;

[0051] Step 5, the pH of the solution 5 is adjusted to 6 or more with sodium metasili...

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Abstract

The invention provides a preparation method of hydrogen chloride oxidation catalyst. The preparation method comprises the following steps: adding a powder carrier into a ruthenium precursor aqueous solution, sufficiently stirring, dropwise adding into a hydrogen peroxide solution, uniformly mixing, heating, adjusting the pH value of the solution by utilizing alkali, then performing the solid-liquid separation, drying the separated solids, and obtaining the hydrogen chloride oxidation catalyst. The hydrogen chloride oxidation catalyst prepared by the invention can solve the defects of the existing hydrogen chloride oxidation catalyst that the preparation method is high in energy consumption, high in water consumption, complex in procedures, unlikely in industrialized mass preparation, low utilization efficiency of the precious metal ruthenium and the like. The preparation method of the hydrogen chloride oxidation catalyst is fewer in process procedures, small in water consumption, low in energy consumption, short in period and high in yield.

Description

technical field [0001] The invention belongs to the technical field of catalyst preparation, and in particular relates to a preparation method of a hydrogen chloride oxidation catalyst. Background technique [0002] Catalytic Oxidation of Hydrogen Chloride to Chlorine (2HCl(g)+1 / 2O 2 →H 2 O+Cl 2 ), also known as the Deacon process, proposed by Henry Deacon in 1868. The Deacon process can convert industrial by-product hydrogen chloride into chlorine gas and realize the recycling of chlorine resources. It is the most effective, economical and environmentally friendly method to solve the emission and recycling of hydrogen chloride. The Deacon reaction is an exothermic reaction, and the equilibrium conversion rate decreases as the reaction temperature increases, so the catalyst must have very good low-temperature activity. Among many catalysts with hydrogen chloride oxidation activity, the supported ruthenium catalyst is the best catalytic system at low temperature. It is w...

Claims

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Application Information

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IPC IPC(8): B01J23/46B01J23/62C01B7/04B01J37/03
CPCB01J23/002B01J23/462B01J23/626B01J37/035C01B7/04
Inventor 潘喜强李玉洁王瑞高亚娜曾清湖吴西宁
Owner XIAN ORIGIN CHEM TECH
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