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Carbon-supported metal catalyst and preparation method and application thereof

A technology for supporting metals and catalysts, applied in the field of carbon-supported metal catalysts and their preparation, to achieve the effects of improving efficiency, low equipment requirements, and simple operation

Active Publication Date: 2021-03-23
ZHEJIANG NHU CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Based on this, it is necessary to provide a carbon-supported metal catalyst with better catalytic performance and lower cost and its preparation method and application for the problem of how to reduce the cost while ensuring better catalytic performance

Method used

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  • Carbon-supported metal catalyst and preparation method and application thereof
  • Carbon-supported metal catalyst and preparation method and application thereof
  • Carbon-supported metal catalyst and preparation method and application thereof

Examples

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preparation example Construction

[0042] The preparation method of any one of the above-mentioned carbon-supported metal catalysts in one embodiment comprises the following steps:

[0043]Mix carbon carrier, ruthenium precursor, iron precursor, cobalt precursor, nickel precursor, platinum precursor and reducing agent uniformly, react completely at 200°C-230°C, then separate solid from liquid and keep the solid to obtain Carbon-supported metal catalyst; the carbon-supported metal catalyst includes a carbon carrier and high-entropy alloy particles supported on the surface of the carbon carrier, and the high-entropy alloy particles include ruthenium, iron, cobalt, nickel and platinum.

[0044] Wherein, the carbon carrier is activated carbon or graphene. Among them, ruthenium precursors, iron precursors, cobalt precursors, nickel precursors, and platinum precursors are respectively used as ruthenium sources, iron sources, cobalt sources, nickel sources, and platinum sources to provide ruthenium ions, iron ions, co...

Embodiment 1

[0068] Take 246.9 mg of activated carbon, 15.9 mg of ruthenium acetylacetonate, 14.1 mg of iron acetylacetonate, 10.3 mg of nickel acetylacetonate, 7.7 mg of cobalt (II) acetylacetonate and 3.9 mg of platinum acetylacetonate, and put them into the lining of a polytetrafluoroethylene reactor. Afterwards, 70 mL of methanol was added, and the mixture was kept at 220° C. for 10 h in a hydrothermal box.

[0069] After the reaction is complete, cool down, then add ethanol for suction filtration, and then deionized water for suction filtration to obtain a solid, and dry the solid in a vacuum drying oven at a drying temperature of 70°C and a drying time of 8 hours. That is, the carbon-supported metal catalyst of Example 1 was obtained.

Embodiment 2

[0071] Take 246.9 mg of activated carbon, 15.9 mg of ruthenium acetylacetonate, 14.1 mg of iron acetylacetonate, 10.3 mg of nickel acetylacetonate, 7.7 mg of cobalt (II) acetylacetonate and 3.9 mg of platinum acetylacetonate, and put them into the lining of a polytetrafluoroethylene reactor. After that, 46.7 mL of methanol and 23.3 mL of ethanol were added, and the mixture was incubated at 220° C. for 10 h in a hydrothermal tank.

[0072] After the reaction is complete, cool down, then add ethanol for suction filtration, and then deionized water for suction filtration to obtain a solid, and dry the solid in a vacuum drying oven at a drying temperature of 70°C and a drying time of 8 hours. That is, the carbon-supported metal catalyst of Example 2 was obtained.

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Abstract

The invention relates to a carbon-loaded metal catalyst as well as a preparation method and application thereof. The carbon-loaded metal catalyst comprises a carbon carrier and high-entropy alloy particles loaded on the surface of the carbon carrier, and the high-entropy alloy particles comprise ruthenium, iron, cobalt, nickel and platinum. Experiments prove that under the condition of the same metal loading capacity, the catalytic performance of the carbon-loaded metal catalyst provided by the technical scheme of the invention is not greatly different from that of a ruthenium-platinum-carbondouble-noble-metal catalyst, and compared with iron-platinum, nickel-platinum, cobalt-platinum and other double-metal carbon-based catalysts, the carbon-loaded metal catalyst provided by the inventionis better in catalytic performance and more stable in recycling performance. Meanwhile, the cost of metal elements such as iron, cobalt and nickel in the high-entropy alloy particles is relatively low, so that the cost of the carbon-loaded metal catalyst is greatly reduced.

Description

technical field [0001] The invention relates to the technical field of metal catalysts, in particular to a carbon-supported metal catalyst and its preparation method and application. Background technique [0002] Metal catalysts are often used to catalyze hydrogenation reduction reactions. For example, trimethylbenzoquinone is an important pharmaceutical intermediate. It can synthesize trimethylhydroquinone through catalytic hydrogenation reduction, and trimethylhydroquinone is a synthetic vitamin An important intermediate of E. In industrial production, palladium carbon and platinum carbon catalysts are used to catalyze the hydrogenation reaction of trimethylbenzoquinone, so as to obtain trimethylhydroquinone, and then produce vitamin E. Although the commercial palladium-carbon and platinum-carbon catalysts have good catalytic performance, they are expensive due to the high content of precious metals and complicated preparation and recovery processes, which are not conduci...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/89B01J37/16B01J35/10C07C37/07C07C39/08
CPCB01J23/892B01J37/16C07C37/07B01J35/61C07C39/08Y02E60/50Y02P20/584
Inventor 王梁炳彭海龙王柳枫于丽丽毛建拥徐志超王燊刘洋吕金阳
Owner ZHEJIANG NHU CO LTD
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