Amorphous skeletal-nickel hydrogenating catalyst for anthraquinone process of preparing hydrogen peroxide and its prepn

A kind of hydrogen peroxide and catalyst technology, applied in the field of a new type of catalyst for hydrogenation of anthraquinone and its preparation field, can solve the problems of high production cost of hydrogen peroxide, expensive palladium catalyst and the like

Inactive Publication Date: 2003-06-04
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the production cost of the hydrogen peroxide produced b...

Method used

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  • Amorphous skeletal-nickel hydrogenating catalyst for anthraquinone process of preparing hydrogen peroxide and its prepn
  • Amorphous skeletal-nickel hydrogenating catalyst for anthraquinone process of preparing hydrogen peroxide and its prepn

Examples

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Embodiment 1

[0018] The present invention is further described below by specific examples. Embodiment 1: Preparation of skeleton nickel-aluminum-chromium-iron amorphous catalyst

[0019] Alloy Formula Pure Nickel 900g

[0020] Pure Aluminum 800g

[0021] Pure Iron 100g

[0022] Pure Chromium 200g

[0023] Alloy powder preparation: Put nickel, aluminum, chromium, and iron into ultrasonic gas atomization equipment and heating furnace for heating, use nitrogen as protective gas, melt injection temperature at 1400±20°C, and roll speed at 800 rpm. The flake alloy obtained is ground to obtain 100-200 mesh particles.

[0024] Catalyst activation: Add the alloy obtained above into 20% sodium hydroxide solution, raise the temperature to 90°C, and 2 Stir for 2 hours under a protective atmosphere, wash with deionized water until neutral after cooling, and remove water in the catalyst with absolute ethanol. Some characterization results of the catalysts are shown in...

Embodiment 2

[0029] Anthraquinone hydrogenation: Dissolve 3.5g of anthraquinone in 70mL of a solvent composed of heavy aromatic hydrocarbons and trioctyl phosphate in a volume ratio of 7:3, and put them into the reactor together with 0.5g of catalyst, and fill with hydrogen The pressure is up to 3 atm, the reaction temperature is controlled at 50±2° C., and the stirring rate is 1000 rpm. See the results figure 2 : The yield of hydrogen peroxide can be close to 100%, far exceeding the 70% level of conventional framework nickel. Embodiment 2: Preparation of skeleton nickel aluminum molybdenum amorphous catalyst

[0030] Put an appropriate amount of pure nickel, pure molybdenum and pure aluminum into the ultrasonic gas atomization equipment and heating furnace for heating, use nitrogen as the protective gas, the melting injection temperature is 1400±20°C, and the roller speed is 800 rpm. Flake alloys with different molybdenum contents are obtained, and the particles of 100-200 meshes are o...

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Abstract

The present invention belongs to the field of chemical technology and is especially one catalyst for anthraquinone hydrogenation process of preparing hydrogen peroxide and its preparation. The catalyst is obtained with some alloy and through active treatment with alkali solution and the alloy consists of Ni, Al and metal additive including one or several of Cr, Mo, W, Fe, Co, Cu and Zn. The catalyst is one kind of amorphous skeleton alloy catalyst prepared through high temperature melting of metal components, quenching stress to obtain alloy strip or scaly alloy, grinding, sieving and activation in alkali solution. Compared with traditional Raney Ni catalyst, the said catalyst has high anthraquinone hydrogenation activity and high selectivity.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and in particular relates to a novel catalyst used for hydrogenation of anthraquinone in the process of preparing hydrogen peroxide by an anthraquinone method and a preparation method thereof. Background technique [0002] Hydrogen peroxide is a very important chemical product with a wide range of applications. In the textile printing and dyeing industry, hydrogen peroxide is used to bleach and desizing fabrics. Because of its small loss of fiber strength, the treated fabrics are not easy to turn yellow and feel full. Hydrogen peroxide can be used in pulp bleaching and waste paper deinking in the paper industry. In the electronics industry, hydrogen peroxide is often formulated with other substances as a corrosive and cleaning agent. In the food industry, hydrogen peroxide can be used in the disinfection of soft packaging paper, disinfectant in canning factories, sterilization of milk...

Claims

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Application Information

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IPC IPC(8): B01J23/755B01J23/76C01B15/023
Inventor 乔明华刘波范康年
Owner FUDAN UNIV
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