Preparation method of supported CuNi bimetallic catalyst and application of supported CuNi bimetallic catalyst in reduction reaction

A bimetallic catalyst, supported technology, applied in the direction of catalyst activation/preparation, preparation of organic compounds, metal/metal oxide/metal hydroxide catalyst, etc., can solve high cost, unfavorable production promotion and application, catalytic activity High abundance, good electrical conductivity, and stable chemical structure can be achieved without high problems

Active Publication Date: 2020-09-15
HUANGSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004]1. The catalytic activity is not high;
[0005]2. The cost is high, which is not conducive to large-scale production promotion and application

Method used

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  • Preparation method of supported CuNi bimetallic catalyst and application of supported CuNi bimetallic catalyst in reduction reaction
  • Preparation method of supported CuNi bimetallic catalyst and application of supported CuNi bimetallic catalyst in reduction reaction
  • Preparation method of supported CuNi bimetallic catalyst and application of supported CuNi bimetallic catalyst in reduction reaction

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Preparation of Supported Inexpensive Bimetallic Cu 1 Ni 1 / rGO catalyst, comprising the following steps:

[0056] (1) Accurately weigh 10 mg copper acetylacetonate (Cu(acac) 2 ), 9.8mg nickel acetylacetonate (Ni(acac) 2 ), 6mg ferric chloride (FeCl 3 ·6H 2 O), 52.8mg ascorbic acid (vitamin C, C 6 h 8 o 6 ) and 5mL oleylamine (OAm) were added to a 100mL round-bottomed flask A, and the round-bottomed flask A was placed in an ultrasonic instrument for ultrasonication for 1 h until the mixture was evenly mixed with oleylamine, and it was a transparent reddish-brown solution, until no solid matter appeared;

[0057] (2) Add pre-prepared 50mg graphene oxide (GO) and 10mL deionized water into a 100mL round-bottomed flask B, ultrasonicate it for 2h until graphene oxide is completely dissolved in deionized water, and the solution is muddy yellow;

[0058] (3) Add the graphene oxide aqueous solution in round-bottom flask B dropwise to round-bottom flask A at a rate of abo...

Embodiment 2

[0063] In the present invention, the prepared catalyst is characterized by transmission electron microscope (TEM) characterization, high-resolution transmission electron microscope (HRTEM) characterization, and X-ray powder diffraction (XRD) characterization methods, and the results are as follows:

[0064] 1. Transmission electron microscopy (TEM) characterization

[0065] Cu by transmission electron microscopy (TEM) 1 Ni 1 / rGO catalysts were characterized, as shown in the attached figure 1 As shown in (a) and (b), the catalyst is uniformly dispersed and uniform in size, without obvious agglomeration phenomenon, and its particle size is about 5nm.

[0066] 2. Characterization by High Resolution Transmission Electron Microscopy (HRTEM)

[0067] Cu by high-resolution transmission electron microscopy (HRTEM) 1 Ni 1 / rGO catalysts were characterized, as shown in the attached figure 2 As shown, its lattice spacing is 0.206nm.

[0068] 3. X-ray powder diffraction (XRD) cha...

Embodiment 3

[0071] About Cu 1 Ni 1 / rGO catalyzes the hydrogenation reduction reaction of nitrobenzene and its derivatives. The inventors optimized the reaction conditions, expanded the reaction substrate, and investigated the recyclability of the catalyst. The details are as follows:

[0072] 1. Cu 1 Ni 1 Optimization of Reaction Conditions for Hydrogenation Reduction of Nitrobenzene Catalyzed by / rGO

[0073] At present, in the field of catalytic chemistry, precious metals that are expensive and difficult to obtain are mainly used, such as palladium (Pd), gold (Au), ruthenium (Ru), rhodium (Rh), iridium (Ir), platinum (Pt), etc. catalyst. In the present invention, metal Cu and Ni that are cheap and easy to obtain are used to load on reduced graphene oxide (Cu 1 Ni 1 / rGO) as a catalyst is of great significance in catalytic chemistry, so Cu 1 Ni 1 / rGO has shown promising application prospects in the hydrogenation reduction catalysis industry.

[0074] Cu 1 Ni 1 / rGO is used t...

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Abstract

The invention belongs to the technical field of catalyst preparation, and particularly relates to a preparation method and application of a supported CuNi bimetallic Cu1Ni1/rGO catalyst. The preparation method of the catalyst comprises the following steps: (1) mixing copper acetylacetonate, nickel acetylacetonate, ferric trichloride, ascorbic acid and oleylamine; (2) adding graphene oxide into deionized water; (3) adding a graphene oxide aqueous solution obtained in step (2) into a material obtained in step (1), and uniformly mixing; (4) heating a material obtained in step (3) to react, stirring, cooling and standing; and (5) centrifuging a reaction solution obtained in step (4), and removing impurities to obtain the supported bimetallic catalyst. The catalyst disclosed by the invention ishigh in catalytic activity, stable in chemical structure and relatively good in conductivity; the raw materials are rich in source, and the catalyst preparation cost is reduced; and the cyclic utilization rate is high.

Description

technical field [0001] The invention belongs to the technical field of catalyst preparation, in particular to a supported CuNi bimetallic Cu 1 Ni 1 The preparation method of / rGO catalyst also relates to the application of above-mentioned catalyst in reduction reaction. Background technique [0002] There are few literature reports on the preparation method of supported CuNi bimetallic catalysts. Wei Yuan et al. 2 Influence of Photocatalytic Preparation of Phenol", the article discloses: using benzene as the starting material and hydrogen peroxide as the oxidant, the Cu / Ni co-catalyst has been studied on the effect of TiO 2 The effect of visible light catalyst on the preparation of phenol, and the mechanism of Cu / Ni co-catalyst was discussed. The preparation method of CuNi bimetallic catalyst or its application in reduction reaction is not involved. [0003] At present, in the preparation process of bimetallic catalysts, the following problems generally exist: [0004] 1...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/755B01J37/03C07C209/36C07C211/46C07C211/47C07C213/02C07C217/84C07C211/51C07C211/52C07C221/00C07C223/06C07C211/45
CPCB01J23/755B01J35/0033B01J35/0013B01J35/006B01J35/0093B01J37/035C07C209/36C07C213/02C07C221/00C07C223/06C07C211/46C07C211/47C07C217/84C07C211/51C07C211/52C07C211/45
Inventor 黄飞汪婧王溪溪孙金余李长江兰艳素
Owner HUANGSHAN UNIV
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