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A kind of preparation method and application of ruthenium/nickel alloy nano catalyst

A nano-catalyst and catalyst technology, applied in the field of nano-catalyst research, can solve problems such as limited research work, and achieve the effects of simple production process requirements, mild reaction conditions, and avoiding high-temperature and high-pressure reactions

Active Publication Date: 2020-06-09
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The 1-nitroanthraquinone catalytic hydrogenation method has the advantages of high efficiency, good selectivity, easy post-treatment, less pollution, and a good production environment. It is a green and environmentally friendly process. However, the current 1-nitroanthraquinone catalytic hydrogenation There is not much research work related to the preparation of 1-aminoanthraquinone

Method used

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  • A kind of preparation method and application of ruthenium/nickel alloy nano catalyst
  • A kind of preparation method and application of ruthenium/nickel alloy nano catalyst
  • A kind of preparation method and application of ruthenium/nickel alloy nano catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 1. Preparation of catalyst:

[0023] Using ruthenium trichloride and nickel acetate as raw materials and hydrogen peroxide as reducing agent, the ruthenium / nickel alloy nanocatalyst was prepared in the presence of organic modifiers.

[0024] When the molar ratio of ruthenium and nickel was 0.05:1, the ruthenium / nickel alloy nanocatalyst (Ru 0.05 Ni) preparation: take 0.1720g of Ru (NO 3 ) 2 2H 2 O, 4.9768g of Ni (NO 3 ) 2 and 0.4977g of KH560 silane coupling agent were dissolved in 40mL, 70mL and 10mL of absolute ethanol respectively by ultrasonic dispersion, and stirred and mixed at 50°C for 20min. Use 1.0mol / L NaOH ethanol solution to adjust the pH to 10, add 0.75mol / L hydrogen peroxide / lithium aluminum hydride absolute ethanol solution dropwise to the above reaction solution, react at 70°C for 6h, and the product undergoes several times After alcohol washing and vacuum drying, the Ru 0.05 Ni alloy nanocatalyst.

[0025] 2.1-Nitroanthraquinone selective cataly...

Embodiment 2

[0028] Same as in Example 1, only changing the amount of catalyst: 0.05g, 0.25g, 0.3g, to carry out the selective hydrogenation reaction of 1-nitroanthraquinone. The product selectivity and raw material conversion rate obtained are shown in Table 1.

[0029] Table 1 at 1.0MPa H 2 The reaction temperature is 120°C, and the reaction is carried out for 5 hours under heat preservation. When the amount of catalyst is different, the selectivity of 1-aminoanthraquinone hydrogenation reaction product 1-aminoanthraquinone and the conversion rate of raw materials are selectively catalyzed by ruthenium / nickel alloy nanocatalysts.

[0030]

Embodiment 3

[0032] Same as in Example 1, only changing the temperature of the reactor to 100°C, 120°C, and 140°C to carry out the selective hydrogenation reaction of 1-nitroanthraquinone. The resulting product selectivity and feedstock conversion are shown in Table 2.

[0033] Table 2 at 1.0MPa H 2 Under pressure, when the amount of catalyst is 0.25g, under different reaction temperatures, under heat preservation for 5 hours, the ruthenium / nickel alloy nano-catalyst selectively catalyzes the selectivity of 1-aminoanthraquinone hydrogenation reaction product of 1-nitroanthraquinone and the conversion of raw materials Rate

[0034]

[0035]

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Abstract

The invention relates to a preparation method and application of a ruthenium / nickel alloy nanocatalyst. The preparation method comprises the following steps: weighing metal precursors of Ru and Ni, dissolving in an absolute ethanol solution respectively, stirring and mixing, adding an alcohol solution of an organic modifier, mixing and stirring for 20 min at 30-60 DEG C, adjusting the pH value ofa reaction solution by using an ethanol solution of NaOH, raising the temperature to 70 DEG C, dropwise adding a hydrogen peroxide and lithium aluminum hydride containing ethanol solution with a certain concentration into the reaction solution, carrying out a reaction for 4-8h, washing for several times by using anhydrous ethanol, and drying in vacuum to obtain the ruthenium / nickel alloy nanocatalyst. The ruthenium / nickel alloy nanocatalyst prepared according to the preparation method provided by the invention shows high catalytic activity and stability in a reaction for preparing 1-aminoanthraquinone through catalytic hydrogenation of 1-nitroanthraquinone; the technical route is simple, the using amount of the catalyst is low, the environmental friendliness is high, and industrializationrequirements are met.

Description

technical field [0001] The invention relates to a preparation method and application of a ruthenium / nickel alloy nano-catalyst, which belongs to the field of nano-catalyst research. Background technique [0002] Anthraquinone dyes are the largest class of dyes except azo dyes. They have two major advantages: one is excellent light fastness, and the other is that it can produce bright colors. In dark dyes such as orange, purple, blue, green, especially blue, anthraquinone dyes occupy an irreplaceable role. important position. Almost all anthraquinone dyes are derivatives of the α-position hydroxyl or amino groups of anthraquinone. Because the hydrogen of the α-position hydroxyl or amino group on the anthraquinone ring forms a hydrogen bond with the 9 and 10 carbonyl groups, it can make the anthraquinone color development system produce a dark color effect and improve the color development intensity. For a long time, the α-position substitutes of anthraquinone have been sul...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/89C07C225/34B22F9/24C07C221/00
Inventor 杨晨晨王爱丽殷恒波
Owner JIANGSU UNIV
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