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A petal-shaped microsphere molybdenum disulfide composite carbon material loaded PD metal catalyst and preparation method thereof

A metal catalyst and composite carbon technology, applied in structural parts, electrical components, battery electrodes, etc., can solve the problems of catalyst poisoning, failure activity, occupation, environmental pollution, etc., and achieve the effect of low equipment requirements, simple process, and easy implementation

Active Publication Date: 2022-05-13
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] There are three major problems in traditional energy: environmental pollution, energy crisis and low energy conversion efficiency
In terms of catalytic performance, the active sites of Pd catalysts are easily occupied by incompletely oxidized intermediates during the catalytic process, causing catalyst poisoning failure and reduced activity.

Method used

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  • A petal-shaped microsphere molybdenum disulfide composite carbon material loaded PD metal catalyst and preparation method thereof
  • A petal-shaped microsphere molybdenum disulfide composite carbon material loaded PD metal catalyst and preparation method thereof
  • A petal-shaped microsphere molybdenum disulfide composite carbon material loaded PD metal catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A petal-shaped microsphere MoS 2 The preparation method of composite carbon material supported Pd metal catalyst, concrete steps are as follows:

[0023] (1) Add 0.5g of XC-72 carbon black into 40mL of deionized water to disperse evenly, add 0.1g of sodium molybdate and 0.1g of thiourea into the above solution, ultrasonicate for 30min, stir for 30min, and then carry out 6h pretreatment in 80℃ water bath After treatment, the solution was transferred to a microwave reactor, microwaved at 200 °C for 5 min, and then dried by centrifugation to obtain MoS 2 Composite carbon materials;

[0024] (2) The MoS obtained in step (1) 2 The composite carbon material was treated at 500 °C for 4 h in a nitrogen atmosphere to obtain MoS 2 / C;

[0025] (3) The MoS in step (2) 2 / C is poured into 40mL of 5mmol / L chloropalladium acid solution according to the molar ratio of molar ratio of platinum and palladium elements, then ultrasonic treatment for 1h and stirring for 1h to form a un...

Embodiment 2

[0028] A petal-shaped microsphere MoS 2 The preparation method of composite carbon material supported Pd metal catalyst, concrete steps are as follows:

[0029] (1) Add 0.5g of XC-72 carbon black into 40 mL of deionized water to disperse evenly, add 0.1g of sodium molybdate and 0.1g of thiourea into the above solution, ultrasonicate for 30min, stir for 30min, and then carry out 80℃ water bath for 6h Pretreatment, then transfer the solution to a microwave reactor, microwave treatment at 200 ° C for 8 min, and then perform centrifugal drying to obtain MoS 2 Composite carbon materials;

[0030] (2) The MoS obtained in step (1) 2 Composite carbon materials in N 2 Treat at 550°C for 3 hours in the atmosphere to get MoS 2 / C;

[0031] (3) The MoS in step (2) 2 / C is poured into 40mL of 5mmol / L chloropalladium acid solution according to the molar ratio of molar ratio of platinum and palladium elements, then ultrasonic treatment for 1h and stirring for 1h to form a uniform suspe...

Embodiment 3

[0034] A petal-shaped microsphere MoS 2 The preparation method of composite carbon material supported Pd metal catalyst, concrete steps are as follows:

[0035] (1) Add 0.5g of XC-72 carbon black into 40 mL of deionized water to disperse evenly, add 0.1g of sodium molybdate and 0.1g of thiourea into the above solution, ultrasonicate for 30min, stir for 30min, and then carry out 80℃ water bath for 6h Pretreatment, then transfer the solution to a microwave reactor, microwave treatment at 200 ° C for 10 min, and then perform centrifugal drying to obtain MoS 2 Composite carbon materials;

[0036] (2) The MoS obtained in step (1) 2 Composite carbon materials in N 2 Treat at 600°C for 2 hours in the atmosphere to get MoS 2 / C;

[0037] (3) The MoS in step (2) 2 / C is poured into 40mL of 5mmol / L chloropalladium acid solution according to the molar ratio of molar ratio of platinum and palladium elements, then ultrasonic treatment for 1h and stirring for 1h to form a uniform susp...

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Abstract

The invention discloses a petal-shaped microsphere molybdenum disulfide composite carbon material loaded Pd metal catalyst and a preparation method thereof. The composite material of petal-shaped microsphere molybdenum disulfide and carbon black is firstly prepared by a microwave-assisted method; NaBH 4 The liquid-phase reduction method reduces Pd ions to Pd particles, which are loaded on the composite support of petal-shaped microspheres of molybdenum disulfide and carbon black, thereby preparing a Pd-based catalyst, which is used as a fuel cell anode catalyst for ethylene disulfide Alcohols undergo electrocatalytic oxidation. The preparation process of this method is simple, and the petal-shaped microsphere MoS can be prepared 2 Composite carbon materials and loading Pd metal on MoS 2 A Pd-based composite catalyst with high catalytic activity to ethylene glycol and strong anti-poisoning ability was prepared on the composite carbon material.

Description

technical field [0001] The invention belongs to the technical field of catalyst preparation and application, and in particular relates to a petal-shaped microsphere molybdenum disulfide composite carbon material supported Pd metal catalyst and a preparation method thereof. Background technique [0002] There are three major problems in traditional energy: environmental pollution, energy crisis and low energy conversion efficiency. In order to maintain sustainable development, human beings need to develop new energy sources and new energy technologies. A fuel cell is a device that directly converts chemical energy into electrical energy. It is considered to be one of the most important new energy technologies in the 21st century. Therefore, this kind of equipment with high energy conversion efficiency and cleanliness has been favored by governments, developers and research institutions of various countries. general attention. At present, fuel cells show broad application pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/88H01M4/86H01M4/92
CPCH01M4/8652H01M4/921H01M4/926H01M4/88Y02E60/50
Inventor 温翠莲余新江萨百晟李瑞峰陈宣良
Owner FUZHOU UNIV
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