Monolithic catalyst for hydrogen peroxide production through pentylanthraquinone process and preparation method thereof

A monolithic catalyst, amyl anthraquinone technology, applied in chemical instruments and methods, peroxide/peroxyhydrate/peroxyacid/superoxide/ozonide, inorganic chemistry, etc., can solve many factors in the process , complex steps and other issues, to achieve the effects of improving efficiency, easy integration, and simplifying the preparation process

Inactive Publication Date: 2015-02-25
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The preparation process steps of the above-mentioned catalysts are rel

Method used

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  • Monolithic catalyst for hydrogen peroxide production through pentylanthraquinone process and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Preparation of Oxide Slurry

[0053] 20g γ-Al 2 o 3 Mix 60g of nitric acid solution with a concentration of 2wt.% in a 100ml nodular ink tank, adjust the rotational speed of the nodular ink machine to 500r / min, after 16 hours of nodular ink, adjust the pH of the slurry to be between 3-4, and obtain the oxidation catalyst additive Aluminum paste.

[0054] Catalyst preparation

[0055] Select a monolithic catalyst carrier with a pore size of 400 holes / square inch, adopt a conventional impregnation method, and the impregnation time is 3 minutes, then use compressed air to remove excess liquid slurry in the channel of the monolithic catalyst carrier, and then put the monolithic catalyst into the In the muffle furnace, the temperature was raised to 500° C. at a rate of 2° C. / min for 2 hours. Repeat the above-mentioned coating step 3 times, and weigh the weight of the catalyst aid on the coating to be 23% of the overall catalyst carrier.

[0056] 10g PdCl 2 Dissolve in ...

Embodiment 2

[0060] 47.4g Mg(NO 3 ) 2 ·6H 2 After the deionized water of O and 400ml is mixed, move to the constant volume of 500ml in the volumetric flask of 500ml, obtain the Mg of certain concentration (NO 3 ) 2 aqueous solution.

[0061] The preparation process of the oxide slurry and the catalyst is the same as in Example 1. After the monolithic catalyst carrier is coated with the catalyst promoter and roasted, when the weight of the catalyst promoter coated on the carrier is weighed to be 23% of the monolithic catalyst carrier, Then impregnated in the above prepared Mg(NO 3 ) 2 Aqueous solution for 3 minutes, then use compressed air to remove excess liquid in the channels of the monolithic catalyst carrier, and then put the monolithic catalyst into a muffle furnace at a rate of 2 °C / min to 500 °C for 2 hours of calcination.

[0062] The loading method and reduction process of the noble metal active component of the catalyst are the same as in Example 1 to obtain the catalyst Ex...

Embodiment 3

[0064] 49.13g Ba(NO 3 ) 2 ·6H 2 After mixing O and 400ml of deionized water, move it to a volumetric flask of 500ml and set the volume to 500ml to obtain a certain concentration of Ba(NO 3 ) 2 aqueous solution.

[0065] The preparation process of the oxide slurry and the catalyst is the same as in Example 1. After the monolithic catalyst carrier is coated with the catalyst promoter and roasted, when the weight of the catalyst promoter coated on the carrier is weighed to be 23% of the monolithic catalyst carrier, Then impregnated in the above prepared Ba(NO 3 ) 2 Aqueous solution for 3 minutes, then use compressed air to remove excess liquid in the channels of the monolithic catalyst carrier, and then put the monolithic catalyst into a muffle furnace at a rate of 2 °C / min to 500 °C for 2 hours of calcination.

[0066] The loading method and reduction process of the noble metal active component of the catalyst are the same as in Example 1 to obtain the catalyst Exa.3, and ...

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Abstract

The invention discloses a monolithic catalyst for hydrogen peroxide production through a pentylanthraquinone process and a preparation method thereof. The catalyst comprises an active component, a co-catalyst, and a carrier; wherein the active component is a combination of one or more elements of platinum group precious metals, the active component (calculated by single substance of precious metals) accounts for 0.01 to 5% of the total mass of the monolithic catalyst, and Pd (calculated by single substance) accounts for 50 to 100% of the total mass of the precious metals. Furthermore, the provided monolithic catalyst can be produced through a simple impregnation method, the preparation method is simple, the preparation process is easy to control, and the prepared monolithic catalyst has a high catalytic activity and selectivity in the hydrogenation reactions of 2-pentylanthraquninone. The provided monolithic catalyst integrates the advantages of conventional slurry bed reactor and trickle bed reactor together and discards the disadvantages of conventional slurry bed reactor and trickle bed reactor, so the efficiency of selective hydrogenation of 2-pentylanthraquinone is improved.

Description

technical field [0001] The invention belongs to the field of petrochemical processes, and in particular relates to an integral catalyst used in the process of producing hydrogen peroxide by amyl anthraquinone method and a preparation method. Background technique [0002] Hydrogen peroxide is an important inorganic chemical product. Hydrogen peroxide can be used as oxidizing agent, bleaching agent, disinfectant, deoxidizer, polymerization initiator and crosslinking agent, etc. It is widely used in textile, chemical industry, paper making, military industry, environmental protection, electronics, medicine , food, mining, construction and other industries. Because the final product of hydrogen peroxide decomposition is water and oxygen, it will not pollute the environment, so it is called the cleanest green chemical product. In recent years, in the new green chemical industry, such as caprolactam, cyclohexanone, hydroquinone, propylene oxide and other products, hydrogen peroxi...

Claims

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Application Information

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IPC IPC(8): B01J23/44B01J23/58C01B15/023
Inventor 王树东苏宏久苏敏任高远
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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