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A method for continuous batch synthesis of single-atom catalysts

A catalyst and atomic technology, applied in the field of materials science and engineering, can solve the problems of unsustainable production, small amount of single-atom catalyst synthesis, expensive synthesis equipment, etc., to avoid amplification effect and poor reproducibility, and to avoid poor universality of preparation , to avoid the effect of small amount of preparation

Active Publication Date: 2022-06-07
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] Based on the shortcomings of the current preparation methods of single-atom catalysts, such as small preparation levels, inability to continue production, expensive synthesis equipment, complex and cumbersome synthesis steps, and low universality, the purpose of the present invention is to provide a continuous batch synthesis unit Atomic catalyst method to solve the problems of small amount of single-atom catalyst synthesis, low universality and amplification effect caused by batch synthesis

Method used

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  • A method for continuous batch synthesis of single-atom catalysts
  • A method for continuous batch synthesis of single-atom catalysts
  • A method for continuous batch synthesis of single-atom catalysts

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Take 0.5kg of iron oxide powder and pour it into the automatic duster above the beginning of the conveying device. The iron oxide powder is automatically and evenly spread on the surface of the conveying device by the automatic dusting machine. forward delivery. Dissolve 0.1g of tetraamino palladium nitrate in 400mL of water to make a solution, then import it into the automatic dusting machine at 25cm above the conveying device, and every 50cm is provided with a nano-level atomizing device, and the tetra-amino palladium nitrate solution passes through the micro-nano level. The atomizing device is uniformly dispersed on the surface of the iron oxide powder at a flow rate of 60 mL / min. The iron oxide powder was transported forward through the powder-turning device every 5cm and kept dry under 150W infrared light. After the iron oxide powder was advanced for 4 m in the metal precursor atomization deposition atmosphere, the iron oxide powder loaded with highly dispersed te...

Embodiment 2

[0042] Take 1kg of activated carbon powder and pour it into the automatic duster above the beginning of the conveyor. The activated carbon powder is automatically and evenly spread on the surface of the conveyor by the automatic duster. At the same time, the conveyor transports the activated carbon powder forward at a speed of 1cm / min. Dissolve 0.2g of cobalt nitrate in 400mL of water to make a solution, and then introduce it into the micro-nano atomizing device at 25cm above the conveying device. A nano-atomizing device is arranged every 50cm, and the cobalt nitrate solution is atomized by the micro-nano atomizing device. The device was uniformly dispersed on the surface of the activated carbon powder at a flow rate of 60 mL / min. The activated carbon powder was fed forward and automatically turned over by the powder turning device every 5 cm, and kept dry under 150W infrared light. The activated carbon powder loaded with highly dispersed cobalt nitrate was collected after adv...

Embodiment 3

[0044] Take 1kg of copper powder and pour it into the automatic duster above the beginning of the conveyor. The copper powder is automatically and evenly spread on the surface of the conveyor by the automatic duster. At the same time, the conveyor transports the copper powder forward at a speed of 1cm / min. Dissolve 0.1 g of chloroplatinic acid in 400 mL of water to prepare a chloroplatinic acid solution, and then introduce it into the micro-nano atomizing device 25cm above the conveying device. It is uniformly dispersed on the surface of copper powder at a flow rate of 60 mL / min through a micro-nano atomizing device. The copper powder was transported forward through the powder turning device at 5cm intervals and kept dry under 150W infrared light. The copper powder loaded with highly dispersed chloroplatinic acid was collected after advancing 4 m in the metal precursor atomization deposition atmosphere. Place the collected samples in 10% concentration H 2 It was calcined at ...

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Abstract

The invention discloses a method for continuously batch-synthesizing single-atom catalysts; it aims to provide a method for continuously batch-synthesizing single-atom catalysts, so as to solve the problems caused by the small amount of synthesis of single-atom catalysts, low universality and intermittent synthesis. magnification effect and other issues; the technical solution includes the following steps: 1) adding the metal precursor to a solvent to form a 0.01‑2mol / L solution, and then importing it into several micro-nano atomization devices; 2) paving the carrier material evenly On the surface of the conveying device, the metal precursor solution is evenly sprayed on the surface of the carrier material through the micro-nano atomization device and stirred at a uniform speed, and the carrier material is irradiated by infrared lamps during the preparation process. Keeping the dry state, then, the single-atom catalyst precursor continuously falls into the sample collection tank at the end of the conveying device, and is finally calcined; it belongs to the field of material science and engineering technology.

Description

technical field [0001] The invention belongs to the technical field of material science and engineering, and in particular relates to a method for continuous batch synthesis of single-atom catalysts. Background technique [0002] Single-atom catalysts have attracted the attention of researchers because of their 100% atomic utilization, excellent catalytic activity, unique electron-geometric structure, and ideal active site-reaction mechanism research objects, and have gradually become one of the new research hotspots. . Compared with traditional nanoparticles, single-atom catalysts achieve nearly 100% dispersion of catalysts, expose more catalytic active sites and active centers with uniform structure, and have better reaction selectivity and higher intrinsic activity. The ideal material for studying the utilization of metal atoms to the extreme. In addition, the single-atom catalyst has a uniform active site, which provides a good material model for exploring the nature o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J37/08B01J37/02B01J35/00B01J27/24B01J23/89B01J23/75B01J23/72
CPCB01J37/0215B01J37/088B01J23/8906B01J23/8926B01J23/75B01J23/72B01J27/24B01J35/391Y02P20/52
Inventor 纪红兵张浩何晓辉何千
Owner SUN YAT SEN UNIV