Alkyl anthraquinone hydrogenation method

An alkyl anthracene and hydrogenation catalyst technology, applied in chemical instruments and methods, preparation of hydroxyl compounds, preparation of organic compounds, etc., can solve the problems of shortening the service life, affecting the fluidization of the catalyst, affecting the utilization efficiency of the catalyst, etc. The effect of service life

Active Publication Date: 2021-07-20
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Since the fluidized bed of this process is equipped with wire mesh packing, it greatly affects the fluidization of the catalyst, which makes the catalyst unevenly distributed in the bed and affects the utilization efficiency of the catalyst.
[0009] In addition, in the hydrogenation of anthraquinone, the purity of hydrogen is very high, and the impurity CO is required to reach the ppb level, because H 2 Medium CO can poison the palladium catalyst and shorten its service life

Method used

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  • Alkyl anthraquinone hydrogenation method
  • Alkyl anthraquinone hydrogenation method
  • Alkyl anthraquinone hydrogenation method

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preparation example Construction

[0019] The preparation method of hydrogenation catalyst described in the inventive method preferably comprises the following steps:

[0020] a. Dry the activated alumina powder and measure the saturated water absorption;

[0021] b. According to P 2 o 5 / Al 2 o 3 Calculate the P required for 100g of activated alumina with a mass ratio of 0.001 to 0.3 2 o 5 The mass number, then calculate the mass of the corresponding required phosphorus-containing compound;

[0022] c. Weigh the required amount of deionized water and the amount of phosphorus-containing compound, prepare a solution of the corresponding phosphorus-containing compound, fully mix with activated alumina, dry, and roast to obtain the carrier;

[0023] d, impregnating the carrier obtained in step c with a required amount of a palladium-containing compound, a ruthenium-containing compound, and a compound containing a co-active component, and adding NaOH solution dropwise to obtain a catalyst precursor suspension...

Embodiment 1

[0032] (1) carrier preparation

[0033] Weigh 100g γ-Al 2 o 3 (Jiangyan Chemical Auxiliary Factory, Jiangsu Province, with a surface area of ​​150m 2 / g, the pore volume is 0.4mL / g, the particle size is 30~150μm), the measured saturated water absorption is 70mL, according to P 2 o 5 / Al 2 o 3 Mass ratio 0.02 Weigh 3.25g of ammonium dihydrogen phosphate and add it to 70mL of deionized water required for weighing to prepare the corresponding ammonium phosphate solution, mix it with activated alumina and stir evenly, then move it into an oven and dry at 120°C for 4h. The dried samples were calcined at 550° C. for 8 h to obtain the desired carrier.

[0034] (2) Catalyst preparation

[0035] Measure 100mL palladium chloride and ruthenium chloride concentration to be the aqueous solution of 7.5g / L, 7.5g / L respectively, take the carrier that 75g step (1) obtains, the carrier is dispersed in the above-mentioned solution, immerse 12h at room temperature, drop Add 12.5 mL of 5 (...

Embodiment 2

[0037] (1) carrier preparation

[0038] Weigh 100g γ-Al 2 o 3 (Jiangyan Chemical Auxiliary Factory, Jiangsu Province, with a surface area of ​​150m 2 / g, the pore volume is 0.4mL / g, the particle size is 30~150μm), the measured saturated water absorption is 70mL, according to P 2 o 5 / Al 2 o 3 Mass ratio 0.05 Weigh 8.2g of ammonium dihydrogen phosphate and add it to 70mL of deionized water required for weighing to prepare the corresponding ammonium phosphate solution, mix it with activated alumina and stir evenly, then move it into an oven and dry at 120°C for 4h. The dried samples were calcined at 550° C. for 8 h to obtain the desired carrier.

[0039] (2) Catalyst preparation

[0040] Measure 100mL palladium chloride and ruthenium chloride concentration to be the aqueous solution of 7.5g / L, 7.5g / L respectively, take the carrier that 75g step (1) obtains, the carrier is dispersed in the above-mentioned solution, immerse 12h at room temperature, drop Add 12.5 mL of 5 (w...

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Abstract

The alkylanthraquinone hydrogenation method is characterized by comprising the step of contacting alkylanthraquinone working fluid with hydrogen in the presence of a hydrogenation catalyst, the hydrogenation catalyst is characterized in that the hydrogenation catalyst takes phosphorus-modified activated aluminum oxide as a carrier, palladium and ruthenium as main active components and one or more of silver, copper, cobalt, lanthanum, cerium, manganese, iron and nickel as auxiliary active components, and in the phosphorus-modified activated aluminum oxide carrier, the mass content of phosphorus in the carrier is 0.1-30% the mass content of palladium and ruthenium in the catalyst is 0.01-10%, and the mass ratio of palladium to ruthenium is (0.2-6): 1; and the mass content of the auxiliary active component in the catalyst is 0-8%. According to the method, the requirement for the content of hydrogen impurities such as CO is not strict, and the service life of the catalyst is longer.

Description

technical field [0001] The invention relates to a method for the hydrogenation of alkyl anthraquinones. Background technique [0002] h 2 o 2 The O atom in is the inequality sp 2 Hybridization, its oxidation number is -1, so one of its characteristic chemical properties is oxidation. Since the final product of it as an oxidant is water, it will not cause secondary pollution to the environment, so it is an ideal green oxidant and is widely used in almost all industrial fields, especially chemical and environmental protection. Emerging green chemical processes such as the ammoximation of cyclohexanone to caprolactam and the epoxidation of propylene to propylene oxide have further expanded H 2 o 2 the use of. [0003] Although a variety of methods can produce H 2 o 2 , such as isopropanol automatic oxidation method, oxygen cathode reduction method, hydrogen-oxygen direct synthesis method and anthraquinone method, etc., but more than 98% of hydrogen peroxide products in ...

Claims

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Application Information

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IPC IPC(8): C07C35/40C07C29/145C01B15/023B01J27/185
CPCC07C29/145C01B15/023B01J27/1856C07C35/40Y02P20/584
Inventor 张晓昕邓明杨王宣宗保宁
Owner CHINA PETROLEUM & CHEM CORP
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