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Biomass-based carbon material loaded monatomic copper catalyst as well as preparation method and application thereof

A copper catalyst and biomass technology, applied in the field of catalytic oxidative coupling synthesis of 1,3-diyne compounds, can solve the problems of large specific surface energy, easy migration and agglomeration, etc., achieve high conversion rate, stable physicochemical structure, avoid The effect of metal agglomeration

Active Publication Date: 2020-04-28
QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to its large specific surface energy, single atoms are easy to migrate and agglomerate, which poses many challenges in their synthesis.

Method used

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  • Biomass-based carbon material loaded monatomic copper catalyst as well as preparation method and application thereof
  • Biomass-based carbon material loaded monatomic copper catalyst as well as preparation method and application thereof
  • Biomass-based carbon material loaded monatomic copper catalyst as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Example 1: Preparation of biomass-based carbon material supported single-atom copper catalyst

[0049] Cut 1 kg of cleaned bamboo shoots into pieces, heat them in an oven at 70°C until dry, grind the dried solid into powder, and set aside; take 4 g of the powder and add it to 40 mL of water, stir and mix evenly, and then transfer it to a hydrothermal reaction kettle. React at 180°C for 5.5 hours. After the reaction, filter, wash the filtered product with water, and dry to obtain a brown solid. The obtained solid is vacuum-dried for 24 hours and ground until the particles are uniform to obtain hydrothermal carbon. Afterwards, 0.5 g of brown solid hydrothermal carbon obtained above was dispersed in 0.0096 g of Cu(NO 3 ) 2 .3H 2 O in 15mL of water, stirred at 60°C for 2h, the reaction solution was dried at 100°C for 12h, then the obtained dry solid was calcined in a tube furnace in a nitrogen atmosphere, and kept at 800°C for 2 hours , after the tube furnace dropped to ...

Embodiment 2

[0051] Except for keeping the temperature at 700° C. for 2 hours, a biomass-based carbon-supported metal copper single-atom-supported catalyst was prepared in the same manner as in Example 1, expressed as Cu / CN-700.

Embodiment 3

[0053] Except for keeping the temperature at 900° C. for 2 hours, a biomass-based carbon-supported metal copper single-atom-supported catalyst was prepared in the same manner as in Example 1, expressed as Cu / CN-900.

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Abstract

The invention discloses a biomass-based carbon material loaded monatomic copper catalyst and a preparation method thereof, and a method for synthesizing a 1, 3-diyne compound by oxidative coupling ofthe catalyst. The catalyst is composed of 0.01 wt%-3 wt% of metal monatomic copper, 70 wt%-90 wt% of a carbon-based carrier and 5 wt%-20 wt% of heteroatoms. The preparation method of the biomass-basedcarrier-loaded monatomic copper catalyst is simple, mild in condition and low in cost, and does not need a common subsequent pickling process. The cheap metal salt and self-doped heteroatom N are used for synergistic coordination, aggregation of metal in the high-temperature pyrolysis process is avoided, and monodispersion of metal atoms is achieved. The metal monatomic content is high, the dispersion is uniform, and the physicochemical structure is stable. The catalyst can take air as an oxidizing agent in oxidative coupling reaction, achieves high conversion rate and excellent substrate universality under alkali-free and ligand-free conditions, and realizes an oxidative cross-coupling reaction among aryl-aryl, aryl-alkyl and alkyl-alkyl differently substituted substrates.

Description

technical field [0001] The invention belongs to the field of catalytic organic synthesis, and in particular relates to a catalyst using a biomass-based nitrogen-doped carbon material to support a single metal copper atom, and a preparation method thereof, and the catalyst for synthesizing 1,3-diynes in catalytic oxidation coupling Compound use. Background technique [0002] 1,3-diyne compounds are abundant in nature and have been successfully extracted from plants, fungi, bacteria, insects and marine organisms. The 1,3-diyne structure has rigid structural units and unique electronic properties. It is an important class of structural units and substructures, and is widely used in organic synthesis, pharmaceutical production, and material development. It is an important organic synthesis intermediate, which can be used in the synthesis of linear conjugated acetylene oligomers, macromolecular compounds including heterocyclic compounds and olefins. 1,3-diyne compounds have exc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/72B01J27/24B01J35/10C07C2/84C07C17/269C07C29/34C07C37/11C07C41/30C07C67/343C07C213/08C07C253/30C07D213/127C07D213/30C07D333/08C07J1/00C07C15/54C07C39/21C07C22/08C07C69/76C07C25/24C07C43/215C07C255/09C07C35/21C07C33/04C07C11/22C07C43/23C07C43/225C07C217/80C07C69/94C07C255/34C07C255/15C07C33/30C07B37/00
CPCB01J27/24B01J23/72C07C2/84C07C37/11C07C41/30C07C67/343C07C17/269C07C253/30C07C29/34C07C213/08C07J1/0096C07D333/08C07D213/127C07D213/30C07B37/00C07C2601/14B01J35/635B01J35/633B01J35/615C07C15/54C07C39/21C07C22/08C07C69/76C07C25/24C07C43/215C07C255/09C07C35/21C07C33/04C07C11/22C07C43/23C07C43/225C07C217/80C07C69/94C07C255/34C07C255/15C07C33/30Y02P20/52
Inventor 杨勇任鹏宋涛
Owner QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI
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