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Catalyst for synthesis of hydrogen peroxide and recovery, and method of preparing same

A production method and technology for hydrogen peroxide, which are applied in the directions of metal/metal oxide/metal hydroxide catalyst, catalyst activation/preparation, physical/chemical process catalyst, etc., can solve the problems of hydrogen peroxide production and regeneration efficiency decline, etc. , to achieve the effect of preventing deterioration

Pending Publication Date: 2022-01-18
HEESUNG CATALYSTS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the above-mentioned hydrogenation and oxidation processes are repeatedly performed, by-products such as tetrahydroanthraquinone are accumulated in the working solution, and coke deposition occurs on the catalyst, resulting in a reduction in the production and regeneration efficiency of hydrogen peroxide. Decline

Method used

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  • Catalyst for synthesis of hydrogen peroxide and recovery, and method of preparing same
  • Catalyst for synthesis of hydrogen peroxide and recovery, and method of preparing same
  • Catalyst for synthesis of hydrogen peroxide and recovery, and method of preparing same

Examples

Experimental program
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Effect test

Embodiment 1

[0026] As the carrier used in Example 1, γ-alumina was used, and boehmite (manufacturer: BASF, Germany, specific surface area: 250m 2 / g, pore volume: 0.55cm 3 / g, average pore size: 8.6nm) and used after firing. The alumina after firing is γ phase, and its specific surface area is 180m 2 / g.

[0027] Magnesium nitrate (Mg(NO 3 ) 2 .6H 2 O), as the precursor of cerium, cerium nitrate (Ce(NO 3 ) 3 .6H 2 O), while tetrachloropalladate (H 2 PdCl 4 ).

[0028] First, 5.0% of magnesium nitrate and 0.5% of cerium nitrate are mixed into the deionized water.

[0029] The manufactured magnesium-cerium composite solution was impregnated into the carrier by the incipient wetness method. The magnesium-cerium-loaded composition was subjected to a heat treatment process at 550° C. for 2 hours in an air environment, thereby fixing the metal.

[0030] Next, add 100 g of magnesium-cerium-loaded alumina compositions to 200 ml of water, then add a palladium precursor equivalent to 1...

Embodiment 2

[0034] In Example 2, a magnesium-palladium complex other than cerium was used, and the composition of magnesium and palladium was the same as in Example 1.

Embodiment 3

[0036] In Example 3, a catalyst was produced in the same manner as in Example 1, except that the content of cerium oxide after firing was 2.0% based on the overall weight. Similar to Example 1, magnesium and cerium are uniformly distributed inside the carrier, while palladium is mainly distributed in a thickness of 20 μm at a certain distance from the outer contour of the carrier.

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Abstract

The present invention relates to a catalyst for synthesis of hydrogen peroxide by means of the anthraquinone process and for recovering a working solution, and to a method of preparing the catalyst. Disclosed is a catalyst in which palladium, magnesium, and cerium components are uniformly distributed in alumina, or a palladium component is distributed in alumina spheres in a ring shape while magnesium and cerium components are uniformly distributed in alumina. In addition, a method of preparing the catalyst is disclosed.

Description

technical field [0001] The invention relates to a catalyst for producing hydrogen peroxide and regenerating working solution by anthraquinone method and a production method thereof. Background technique [0002] Hydrogen peroxide (H 2 0 2 ) are chemicals used in various fields such as polishes, disinfectants, pharmaceuticals, and oxidizing agents. Hydrogen peroxide is produced by a direct synthesis method using hydrogen and oxygen, and an anthraquinone method in which hydrogenation and oxidation processes are continuously performed using anthraquinone series compounds. Next, the anthraquinone method will be briefly described. [0003] [0004] Hydrogen peroxide can be obtained by repeatedly performing hydrogenation and oxidation on a working solution obtained by dissolving alkylanthraquinone (commonly known as 2-ethyl-anthraquinone, EAQ) in a suitable organic solvent. way to manufacture. When the above-mentioned hydrogenation and oxidation processes are repeatedly pe...

Claims

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Application Information

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IPC IPC(8): B01J35/00B01J23/58B01J23/63B01J37/02B01J37/08C01B15/023
CPCB01J35/00B01J23/63B01J23/58B01J37/02B01J37/08C01B15/023B01J35/396B01J37/088B01J37/16B01J23/96B01J37/024Y02P20/584B01J35/399B01J35/40B01J35/615B01J35/635B01J35/647B01J37/0201B01J2523/22B01J2523/3712B01J2523/824B01J35/51
Inventor 姜东君李英浩刘荣山
Owner HEESUNG CATALYSTS CORP
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