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Catalyst for hydrogenation preparation of amino-anthraquinone as well as preparation method and application of catalyst

A technology of aminoanthraquinone and catalyst, which is applied in the field of hydrogenation to prepare aminoanthraquinone catalyst and its preparation, achieving the effects of high conversion rate, increased load rate, and multiple times of repeated use

Active Publication Date: 2021-08-27
青岛福凯橡塑新材料有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Nitroanthraquinone hydrogenation reduction method generally adopts liquid phase hydrogenation reduction method. This method has been studied a lot at home and abroad, but it has not been industrialized so far. Therefore, once this technology is broken through, it will be the most advanced production of aminoanthraquinone in the world. , the most advanced technology, its significance is not limited to this industry, but also profoundly affects related industries

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0051] Sodium hydroxide was dissolved in 500ml of 40°C deionized water to prepare a 4% sodium hydroxide solution. Add 1L of alumina to the sodium hydroxide solution, stir it evenly, put it in the reaction kettle, evaporate the water to dryness at 100°C, and then dry it at 120°C for 6 hours after cooling, suction filtration and washing to obtain the alkali-modified alumina.

[0052] The alkali-modified alumina was immersed in 500ml palladium nitrate solution for 2 hours, wherein the palladium content in the 500ml palladium nitrate solution was 1.8%, that is, 9g of palladium was contained in the 500ml palladium nitrate solution. Then wash with water until PH = 7, soak in hydrazine hydrate solution with a mass fraction of 10% for 2 hours, filter, wash with water until PH = 7, and dry at 120°C. The dried palladium / alumina catalyst is then fully adsorbed in 500ml potassium fluoride aqueous solution with a mass fraction of 6%, and dried at 120°C. Finally, it was fully adsorbed wit...

specific Embodiment 2

[0054] Sodium hydroxide was dissolved in 500ml of 40°C deionized water to prepare a 4% sodium hydroxide solution. Add 1L of alumina to the sodium hydroxide solution, stir it evenly, put it in the reaction kettle, evaporate the water to dryness at 100°C, and then dry it at 120°C for 6 hours after cooling, suction filtration and washing to obtain the alkali-modified alumina.

[0055] The alkali-modified alumina was immersed in 500ml of palladium nitrate solution for 2 hours, wherein the platinum content in the 500ml of platinum nitrate solution was 3.6%, that is, 18g of platinum was contained in the 500ml of platinum nitrate solution. Then wash with water until PH = 7, soak in hydrazine hydrate solution with a mass fraction of 10% for 2 hours, filter, wash with water until PH = 7, and dry at 120°C. The palladium / alumina catalyst after drying was fully adsorbed in 500ml potassium fluoride aqueous solution with a mass fraction of 6%, and dried at 120°C. Finally, it was fully ads...

specific Embodiment 3

[0057] Sodium hydroxide was dissolved in 500ml of 40°C deionized water to prepare a 4% sodium hydroxide solution. Add 1L of alumina to the sodium hydroxide solution, stir it evenly, put it in the reaction kettle, evaporate the water to dryness at 100°C, and then dry it at 120°C for 6 hours after cooling, suction filtration and washing to obtain the alkali-modified alumina.

[0058] The alkali-modified alumina was immersed in 500ml palladium nitrate solution for 2 hours, wherein the palladium content in the 500ml palladium nitrate solution was 1.8%, that is, 9g of palladium was contained in the 500ml palladium nitrate solution. Then wash with water until PH = 7, soak in hydrazine hydrate solution with a mass fraction of 10% for 2 hours, filter, wash with water until PH = 7, and dry at 120°C. The palladium / alumina catalyst after drying was fully adsorbed in 500ml calcium fluoride aqueous solution with a mass fraction of 6%, and dried at 120°C. Finally, fully adsorb with 500ml ...

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Abstract

The invention discloses a catalyst for hydrogenation preparation of amino-anthraquinone and a preparation method and application of the catalyst. The catalyst for hydrogenation preparation of amino-anthraquinone comprises an active component and a carrier, the active component is one or more of palladium, molybdenum, ruthenium and rhodium, the carrier is alkali modified alumina, and the weight content of the active component is 0.5-10%. The invention relates to a method for preparing a catalyst for hydrogenation preparation of amino-anthraquinone, which comprises the following steps: dipping alkali modified alumina in one or a mixed solution of several active component solutions, conducting water washing until the pH value is 7, conducting soaking with a hydrazine hydrate solution, conducting filtering, conducting water washing until the pH value is 7, and conducting drying, fully conducting adsorbing with a main group element salt solution, and conducting drying; and finally, sufficiently conducting adsorbing by using a transition metal salt solution, and conducting drying to obtain the catalyst. When the catalyst provided by the invention is used for preparing aminoanthraquinone, the catalyst has the advantages of high conversion rate, good selectivity, repeated use of the catalyst for many times, reuse of waste liquid and environmental friendliness.

Description

technical field [0001] The invention belongs to the field of catalysts, and in particular relates to a catalyst for preparing aminoanthraquinone by hydrogenation, a preparation method and application thereof. Background technique [0002] Anthraquinone dyes are the largest class of dyes except azo dyes. They have two main advantages: one is excellent light fastness, and the other is that it can produce bright colors. In orange, purple, blue, green, especially blue and other dark dyes, anthraquinone dyes occupy an irreplaceable role. important position. Almost all anthraquinone dyes are derivatives of the a-position hydroxyl or amino groups of anthraquinone. Because the hydrogen of the a-position hydroxyl or amino group on the anthraquinone ring forms a hydrogen bond with the 9 and 10 carbon groups, it can make the anthraquinone color development system produce a dark color effect and improve the color development intensity. [0003] Synthesis method Aminoanthraquinone is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/128B01J27/12B01J27/122B01J23/44B01J37/02B01J37/16C07C221/00C07C225/34
CPCB01J27/128B01J27/122B01J27/12B01J23/44B01J37/0207B01J37/16B01J37/024C07C221/00C07C2603/24C07C225/34Y02P20/584
Inventor 傅秀成石勇
Owner 青岛福凯橡塑新材料有限公司