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Intermetallic compound composite material and preparation method thereof and application of intermetallic compound composite material and preparation method thereof

A technology of intermetallic compounds and composite materials, applied in the field of intermetallic compound composite materials, can solve problems such as difficult to obtain, difficult to operate, unfavorable to industrial production and manufacturing, and achieve unique activity and selectivity

Active Publication Date: 2019-05-03
安徽枡水新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, some of these methods are too cumbersome and complicated to operate; some raw materials are expensive and not easy to obtain; the additional addition of some auxiliary agents causes waste of resources, etc. It can be seen that the above methods are extremely unfavorable for large-scale industrial production and manufacturing, and the prospects for application and promotion are worrying.

Method used

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  • Intermetallic compound composite material and preparation method thereof and application of intermetallic compound composite material and preparation method thereof
  • Intermetallic compound composite material and preparation method thereof and application of intermetallic compound composite material and preparation method thereof
  • Intermetallic compound composite material and preparation method thereof and application of intermetallic compound composite material and preparation method thereof

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preparation example Construction

[0041] The present application also provides a preparation method of the above-mentioned intermetallic compound composite material, comprising the following steps:

[0042] Mixing sulfur-doped mesoporous carbon, a metal salt precursor and a solvent, and drying to obtain an initial mixture; the metal salt precursor is one of Pt-based salt, Rh-based salt and Ir-based salt and other metal salts;

[0043] The initial mixture is heat-treated in a reducing atmosphere to obtain an intermetallic compound composite material; the temperature of the heat treatment is 800-1100°C.

[0044] The intermetallic compound composite material provided by this application can be prepared by impregnation and heat treatment. This method is universally applicable to various metals, and the process operation is simple and easy.

[0045] Specifically, in the process of preparing the intermetallic compound composite material, the applicant first mixes the sulfur-doped mesoporous carbon, the metal salt pr...

Embodiment 1

[0058] a. 0.5g dithiophene, 0.5g SiO 2 Airgel and 0.25g Co(NO 3 ) 2 ·6H 2 O was dispersed in tetrahydrofuran and stirred evenly, and the solvent was removed by rotary evaporation to obtain a uniform mixture; the resulting mixture was transferred to a quartz crucible or a corundum crucible, and placed in a tube furnace, and then nitrogen was introduced as a protective gas. Raise the temperature to 800°C at a rate of 5°C / min and keep it for 2h; then cool down to room temperature naturally, and keep the normal pressure in the tube furnace; then transfer the obtained product to a flask, add about 30-50mL of 2mol / L NaOH solution, and stir for 36h ~48h, carry out the first alkali etching; then centrifuge the solution in a centrifuge at 8000r~10000r for 5min~10min; then pour off the centrifuged supernatant, and transfer the lower solid to the flask again, Add about 30-50mL of 2mol / L NaOH solution, stir for 12h-36h, and carry out the second alkali etching; then centrifuge and wash ...

Embodiment 2

[0064] A. step is identical with embodiment 1;

[0065] b. the obtained sulfur-doped mesoporous carbon nanomaterial 50mg and 10mg metal salt (guaranteed H 2 PtCl 6 ·6H 2 O and FeCl 3 ·6H 2 Pt in O: Fe = 1: 1) was placed in a 100ml round bottom flask, solvent water was added, stirred for 6-10 hours, and after rotary evaporation and drying, a uniformly mixed precursor was obtained;

[0066] c. Put the precursor into the tube furnace, and pass argon hydrogen into the tube furnace (the volume fraction is 95% Ar+5% H 2 ) as a protective gas, the tube furnace was heated up to 900 °C at a rate of 5 °C / min, and kept for 2 hours; finally, it was annealed naturally to room temperature, and the tube furnace was kept at normal pressure to obtain a PtFe intermetallic compound composite material.

[0067] figure 2 XRD, HADDF-STEM and particle size distribution photos of the PtFe intermetallic phase in the PtFe intermetallic compound composite material provided by Example 2 of the pre...

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Abstract

The invention provides an intermetallic compound composite material. The intermetallic compound composite material is prepared from sulfur-doped mesoporous carbon and an intermetallic compound loadedon the surface of the sulfur-doped mesoporous carbon. The intermetallic compound is formed by adopting Pt, or Rh or Ir as a base. The invention further provides a preparation method of the intermetallic compound composite material, and further provides application of the intermetallic compound composite material to hydrogenation catalysis. The intermetallic compound composite material is synthesized by regulating and controlling the type and temperature of a metal salt precursor, and the intermetallic compound in the composite material has a small size of less than 5 nm and a high utilizationrate; and the preparation method has universality, the operation is simple, the cost is low, and the industrial production is easy.

Description

technical field [0001] The invention relates to the technical field of nanometer materials, in particular to an intermetallic compound composite material, its preparation method and its application. Background technique [0002] Intermetallics, also known as atomically ordered alloys, have a well-defined chemical atomicity and crystal structure, compared to their disordered alloys (i.e., solid solutions), due to strong internal order, mixed metals and covalent / ionic, showing Significant magnetism, superconductivity and chemical bonding. The fundamental effects of intermetallic phases can be classified into four categories: electronic effects, geometric effects, steric effects, and order effects. The special surface structure of intermetallic compounds determines the unprecedented steric effect and exhibits unique properties. Intermetallic compounds have the following advantages for the design of fine catalysts: control of electronic structure, specific ordered atomic-level...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C30/00C22C1/05C22C1/10B22F9/22
Inventor 梁海伟杨成龙尹鹏陈林维
Owner 安徽枡水新能源科技有限公司
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