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Method for continuous batch synthesis of monatomic catalyst

A catalyst and atom technology, applied in the field of materials science and engineering, can solve the problems of uncontinuous 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: 2021-11-12
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

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  • Method for continuous batch synthesis of monatomic catalyst
  • Method for continuous batch synthesis of monatomic catalyst
  • Method for continuous batch synthesis of monatomic catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Take 0.5kg of iron oxide powder and pour it into the automatic powder spreader above the starting end of the conveyor. The iron oxide powder is automatically evenly spread on the surface of the conveyor by the automatic powder spreader. front delivery. Dissolve 0.1g tetraamino palladium nitrate in 400mL water to form a solution, and then introduce it into the automatic powder spreader at 25cm above the conveying device. A nano-level atomization device is installed every 50cm, and the tetraamino palladium nitrate solution passes through the micro-nano level The atomization device is uniformly dispersed on the surface of the iron oxide powder at a flow rate of 60mL / min. Convey iron oxide powder forward and turn over automatically by every 5cm powder turning device, and keep drying under the infrared lamp of 150W. After the iron oxide powder advances 4m in the atomized deposition atmosphere of the metal precursor, the iron oxide powder loaded with highly dispersed tetraam...

Embodiment 2

[0042] Take 1kg of activated carbon powder and pour it into the automatic powder spreader above the beginning of the conveying device. The activated carbon powder will be automatically and evenly spread on the surface of the conveying device through the automatic powder spreading machine. At the same time, the conveying device will convey 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-level atomization device at 25cm above the conveying device. A nano-level atomization device is set every 50cm, and the cobalt nitrate solution is atomized through the micro-nano level The device is evenly dispersed on the surface of activated carbon powder at a flow rate of 60mL / min. Convey the activated carbon powder forward and turn over automatically by every 5cm powder turning device, and keep dry under the infrared lamp of 150W. After the activated carbon powder advanc...

Embodiment 3

[0044] Take 1kg of copper powder and pour it into the automatic powder spreader above the starting end of the conveyor. The copper powder is automatically and evenly spread on the surface of the conveyor by the automatic powder spreader. At the same time, the conveyor conveys the copper powder forward at a speed of 1cm / min. Dissolve 0.1g of chloroplatinic acid in 400 mL of water to make a chloroplatinic acid solution, and then introduce it into the micro-nano atomization device at 25cm above the conveying device. A nano-atomization device is provided every 50cm, and the chloroplatinic acid solution Disperse evenly on the surface of copper powder with a flow rate of 60mL / min through a micro-nano atomization device. Convey copper powder forward and turn over automatically by every 5cm powder turning device, and keep dry under the infrared lamp of 150W. After the copper powder advances 4m in the atomized deposition atmosphere of the metal precursor, the copper powder loaded with ...

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Abstract

The invention discloses a method for continuous batch synthesis of a monatomic catalyst. The invention discloses the method for continuous batch synthesis of the monatomic catalyst and aims to solve the problems that the monatomic catalyst is small in synthesis amount and low in universality, and amplification effects can be caused by intermittent synthesis. According to the technical scheme, the method comprises the following steps: 1) adding a metal precursor into a solvent to prepare a 0.01-2 mol / L solution, and then introducing the 0.01-2 mol / L solution into a plurality of micro-nano atomization devices; and (2) evenly spreading a carrier material on the surface of a conveying device, conveying the carrier material to the position under the micro-nano atomization devices at a constant speed, evenly spraying a metal precursor solution to the surface of the carrier material through the micro-nano atomization devices, conducting stirring to a uniform state, keeping the carrier material in a dry state in the preparation process through irradiation of an infrared lamp, and then enabling the monatomic catalyst precursor to continuously fall into a sample collecting tank at the tail end of the conveying device, and finally conducting calcining. The invention belongs to the technical field of material science and engineering.

Description

technical field [0001] The invention belongs to the technical field of material science and engineering, in particular to a method for continuous batch synthesis of single-atom catalysts. Background technique [0002] Single-atom catalysts have attracted the attention of many researchers because of their 100% atom 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 structurally uniform catalytic active sites and active centers, and have better reaction selectivity and higher intrinsic activity. The ideal material for studying the utilization rate of metal atoms to the extreme. In addition, the active sites of single-atom catalysts are uniform, which provides a good material model for exploring the nature of c...

Claims

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Application Information

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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