Anthraquinone hydrogenation catalyst, and preparation method and application thereof

A hydrogenation catalyst and catalyst technology, applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, heterogeneous catalyst chemical elements, etc., can solve the problems of low hydrogenation efficiency and achieve improved dispersion degree, improve stability, improve the effect of surface properties

Pending Publication Date: 2018-06-05
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to solve the problem that the anthraquinone hydrogenation catalyst in the prior art is prone to produce a large amount of by-products and the hydrogenation efficiency is low during the catalytic reaction process, the present invention provides an anthraquinone hydrogenation catalyst with alumina as a carrier, which has relatively high High hydrogenation efficiency, the service life is 1 / 3 longer than that of catalysts commonly used in the prior art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Prepare an aluminum chloride solution with a concentration of 0.8M, and add 0.001mol of lanthanum nitrate hexahydrate and 0.002mol of potassium nitrate per liter of the solution into the aluminum chloride solution to form solution I. Under the condition of stirring, the solution I and the ammonia water with a concentration of 8wt% were slowly added into the gel forming tank in parallel. Control the temperature in the gelling tank to 70°C, control the flow rate of the above-mentioned aluminum trichloride solution to 2mL / min, control the adding rate of ammonia water, and maintain the pH value of the material in the gelling tank at 8.0~10.0. After the gelation is completed, the slurry is stirred and aged for 0.5h under the condition of an ammonium ion concentration of 0.6M, then the slurry is filtered, vacuum-dried at 80°C for 24h, extruded, spherical, with an average particle size equivalent diameter of 2.5mm, 700°C Roasting 6h. That is to say, the alumina carrier co...

Embodiment 2

[0035](1) Prepare an aluminum trichloride solution with a concentration of 1M, and add 0.003 mol of lanthanum nitrate hexahydrate and 0.005 mol of potassium nitrate per liter of the solution into the aluminum trichloride solution to form solution I. Under the condition of stirring, the solution I and the ammonia water with a concentration of 8wt% were slowly added into the gel forming tank in parallel. Control the temperature in the gelling tank to 70°C, control the flow rate of the above-mentioned aluminum trichloride solution to 2mL / min, control the adding rate of ammonia water, and maintain the pH value of the material in the gelling tank at 8.0~10.0. After the gelation is completed, the slurry is stirred and aged for 0.5h under the condition of an ammonium ion concentration of 0.4M, then the slurry is filtered, vacuum-dried at 80°C for 32h, extruded, spherical, with an average particle diameter of 2.5mm, and 700°C Calcined for 6 hours, the alumina support containing 2wt% L...

Embodiment 3

[0040] (1) Prepare an aluminum trichloride solution with a concentration of 1.2M, and add 0.005 mol of lanthanum nitrate hexahydrate and 0.012 mol of potassium nitrate per liter of the solution into the aluminum trichloride solution to form solution I. Under the condition of stirring, the solution I and the ammonia water with a concentration of 8wt% were slowly added into the gel forming tank in parallel. Control the temperature in the glue tank to 80°C, control the flow rate of the above-mentioned aluminum trichloride solution to 2mL / min, control the adding rate of ammonia water, and maintain the pH value of the material in the glue tank at 8.0-10.0. After the gelation is completed, the slurry is stirred and aged for 0.5h under the condition of an ammonium ion concentration of 0.5M, then the slurry is filtered, vacuum-dried at 80°C for 32h, extruded, spherical, with an average particle size equivalent diameter of 2.5mm, 700°C Calcined for 6 hours, the alumina carrier containi...

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Abstract

The invention relates to an anthraquinone hydrogenation catalyst, and a preparation method and application thereof. The catalyst is prepared by the following steps: taking alumina as a carrier, compounding rare earth elements and alkali metal elements, carrying out glue forming, aging, forming and roasting, and then supporting nickel and palladium as active metals. According to the catalyst prepared by the method provided by the invention, with the introduction of the rare earth elements, the growth of alumina grains in the high-temperature treatment is inhibited, the specific surface area ofthe catalyst is increased, the dispersity of the active metals is increased, and the alkalinity of the surface of the carrier is enhanced; with the introduction of the alkali metal elements, the surface property of the carrier is improved, the distribution of the active metals and the desorption of hydrogenation products are facilitated; and the rare earth elements are diffused to the surface andare oxidized for forming oxides, and the oxides can act with nickel for forming an intermetallic compound, so that the metallicity is easy to retain, and when the catalyst is applied to an anthraquinone hydrogenation reaction, the hydrogenation efficiency is greatly improved.

Description

technical field [0001] The invention relates to a hydrogenation catalyst, in particular to an anthraquinone hydrogenation catalyst in the process of producing hydrogen peroxide by an anthraquinone method and a preparation method thereof. Background technique [0002] Hydrogen peroxide is an important chemical product, which is widely used in papermaking, chemical industry, food, environmental protection and other fields. [0003] The preparation methods of hydrogen peroxide mainly include: electrolysis method, air cathode method, anthraquinone method, direct hydrogen and oxygen synthesis method, methyl benzyl alcohol oxidation method, isopropanol oxidation method, fuel cell method, and the method of producing hydrogen peroxide with carbon monoxide in aqueous solution, etc. Among them, the anthraquinone method has great advantages over other methods due to its advanced technology, large production scale, high degree of automation, low cost and energy consumption, and easy tre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/89C01B15/023
CPCB01J23/002B01J23/8946B01J2523/00C01B15/023B01J2523/13B01J2523/3706B01J2523/847B01J2523/824B01J2531/31B01J2523/3712
Inventor 贾立明徐会青刘全杰王伟
Owner CHINA PETROLEUM & CHEM CORP
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