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Rapid preparation method and application of high-yield MOF-derived catalyst

A catalyst and high-yield technology, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve problems such as harsh operating conditions, large energy loss, and cumbersome steps, and achieve increased reaction kinetics, Short time-consuming, process-safe results

Active Publication Date: 2019-04-19
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, researchers mostly use the method of temperature programming to carbonize MOF to prepare functional derivative materials, but this method has disadvantages such as low yield, harsh operating conditions, cumbersome steps, time-consuming, and large energy loss.

Method used

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  • Rapid preparation method and application of high-yield MOF-derived catalyst
  • Rapid preparation method and application of high-yield MOF-derived catalyst
  • Rapid preparation method and application of high-yield MOF-derived catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Take 20mL of deionized water, add 1.0g of dimethylimidazole, stir and dissolve to obtain solution A; take 40mL of deionized water, add 0.6g of cobalt chloride, stir and dissolve to obtain solution B; mix solution A and solution B, and After standing for 6 hours, the mixed solution and the precipitated product were suction-filtered and washed, and then dried at 50° C. to obtain Co-MOF powder. Co-MOF powders were mechanically compressed to obtain monolithic Co-MOF sheets. Subsequently, the obtained monolithic Co-MOF sheet was buried in graphene powder, and then the mixture was transferred to a microwave reactor, and nitrogen gas was introduced as a protective gas. The microwave radiation power was controlled at 800W, and the microwave radiation time was controlled at 90 seconds. The Co-MOF sheet derivatives were then removed from the mixture to obtain the Co-MOF-derived catalyst Co@NC. From XRD spectrum figure 1 It can be seen that Co exists in the form of simple metal ...

Embodiment 2

[0025] Take 10mL of deionized water, add 0.4g of dimethylimidazole, stir and dissolve to obtain solution A; take 20mL of deionized water, add 0.2g of cobalt chloride, stir and dissolve to obtain solution B; mix solution A and solution B, and After standing for 8 hours, the mixed solution and the precipitated product were suction-filtered and washed, and then dried at 80° C. to obtain Co-MOF powder. Co-MOF powders were mechanically compressed to obtain monolithic Co-MOF sheets. Subsequently, the obtained monolithic Co-MOF sheet was buried in graphene powder, and then the mixture was transferred to a microwave reactor, nitrogen gas was introduced as a protective gas, the microwave radiation power was controlled at 1000W, and the microwave radiation time was controlled at 30 seconds, and then The Co-MOF sheet derivatives were removed from the mixture to obtain the Co-MOF-derived catalyst Co@NC.

Embodiment 3

[0027] Take 50mL of deionized water, add 1.8g of dimethylimidazole, stir and dissolve to obtain solution A; take 30mL of deionized water, add 0.8g of cobalt chloride, stir and dissolve to obtain solution B; mix solution A and solution B, and then The carbon fiber paper was soaked in the mixed solution, and after standing for 8 hours, the carbon fiber paper was taken out, washed, and then dried at 50°C to obtain a carbon fiber paper supported Co-MOF precursor. Subsequently, the obtained carbon fiber paper-loaded Co-MOF precursor was buried in graphene powder, and then the mixture was transferred to a microwave reactor, and nitrogen gas was introduced as a protective gas. The microwave radiation power was controlled at 1000W, and the microwave radiation time was controlled at 30 seconds, and then remove the carbon fiber paper-supported Co-MOF precursor derivative from the mixture to obtain the catalyst carbon fiber paper-supported Co@NC / CF. from figure 2 It can be known from t...

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PUM

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Abstract

The invention belongs to the technical field of catalytic material preparation, and relates to a rapid preparation method and an application of a high-yield MOF-derived catalyst. The preparation method comprises the following steps: (1) preparation of a precursor Co-MOF; and (2) microwave radiation carbonization treatment. The MOF-derived catalyst prepared by the method has a regular structure anda high carbon content. The MOF-derived catalyst prepared by the method has excellent catalytic activity on electrolytic water cathode hydrogen evolution and anodic oxygen evolution in the electrocatalytic water decomposition process, and is expected to replace noble metal catalysts. The method of the invention has the advantages of rapidity, wide universality, greenness, environmental protection,short time, low energy consumption, simple and safe process, and easiness in large-scale production.

Description

technical field [0001] The invention relates to a rapid preparation method and application of a high-yield MOF-derived catalyst, belonging to the technical field of preparation of catalytic materials. Background technique [0002] As a new class of crystalline porous materials, metal-organic frameworks (MOFs) have the characteristics of large specific surface area, adjustable pore size, and convenient functionalization. They have received extensive attention and research, and have shown their unique advantages and It has broad application prospects, especially in the field of catalysis and separation, which has attracted much attention. In addition, MOFs, as a class of porous materials with structural diversity, easy control of metal types, and heteroatoms, are often selected as "precursors / templates" for the preparation of nanoporous carbon or carbon-coated metals and other functional materials. Material. [0003] Designing and synthesizing MOF-derived functionalized nano...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24C25B1/04C25B11/06
CPCB01J27/24C25B1/04C25B11/095Y02E60/36
Inventor 邱介山黄华伟于畅黄红菱姚秀超魏千兵崔崧谭新义
Owner DALIAN UNIV OF TECH
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