黄金 (I) -有机框架作为碳酸与二氧化碳的催化剂
Rong-Jia Wei1, Mo Xie1, Ri-Qin Xia1
1College of Chemistry and Materials Science, and Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications, Jinan University, Guangzhou 510632, China.
Journal of the American Chemical Society
|October 4, 2023
概括
研究人员使用快速环境条件方法开发了第一个基于黄金的金属有机框架 (Au-MOF). 这些稳定的Au-MOF可以作为碳二氧化碳利用的催化剂.
科学领域:
- 材料科学
- 无机化学
- 催化剂
背景情况:
- 基于黄金的金属有机框架 (Au-MOF) 具有独特的特性,但由于黄金在溶热条件下降解,它们难以合成.
- 现有的MOF合成方法通常需要恶劣的条件,限制了它们的适用性和稳定性.
研究的目的:
- 在环境条件下开发一种简单可扩展的合成Au-MOF的方法.
- 研究合成的Au-MOFs在碳化反应中的催化活性.
主要方法:
- 使用循环三核黄金 (I) 复合物和一个正式的转化反应.
- 在环境条件下采用快速 (<15分钟) 和可扩展 (高达1g) 的合成.
- 具有孔隙性,结晶性和化学稳定的Au-MOF.
主要成果:
- 通过一种新的,快速的,可扩展的环境条件方法成功合成了第一个Au-MOF.
- 合成的Au-MOF具有均的多孔性,高晶度,在20M NaOH中具有特殊的稳定性.
- 由于开放的Au (I) 位点,Au-MOF在与CO2的化碳反应中表现出良好的催化性能和基质耐受性.
结论:
- 这项工作通过结合协调和动态共价化学来突破Au-MOF合成.
- 开发的方法为稳定,多孔的Au-MOF提供了一个简单而有效的途径.
- 催化应用突显了这些Au-MOF在可持续化学转化,特别是二氧化碳利用方面的潜力.
相关概念视频
Reduction of Alkynes to cis-Alkenes: Catalytic Hydrogenation
7.8K
Introduction
Like alkenes, alkynes can be reduced to alkanes in the presence of transition metal catalysts such as Pt, Pd, or Ni. The reaction involves two sequential syn additions of hydrogen via a cis-alkene intermediate.
Like alkenes, alkynes can be reduced to alkanes in the presence of transition metal catalysts such as Pt, Pd, or Ni. The reaction involves two sequential syn additions of hydrogen via a cis-alkene intermediate.
7.8K
Preparation of Carboxylic Acids: Carboxylation of Grignard Reagents
4.6K
Carboxylic acids can be prepared by the carboxylation of Grignard reagents (RMgX). This method is convenient for converting alkyl (primary, secondary or tertiary), vinyl, benzyl, and aryl halides to carboxylic acids with one additional carbon than the starting RMgX.
4.6K
Alkynes to Aldehydes and Ketones: Hydroboration-Oxidation
18.2K
Introduction
One of the convenient methods for the preparation of aldehydes and ketones is via hydration of alkynes. Hydroboration-oxidation of alkynes is an indirect hydration reaction in which an alkyne is treated with borane followed by oxidation with alkaline peroxide to form an enol that rapidly converts into an aldehyde or a ketone. Terminal alkynes form aldehydes, whereas internal alkynes give ketones as the final product.
One of the convenient methods for the preparation of aldehydes and ketones is via hydration of alkynes. Hydroboration-oxidation of alkynes is an indirect hydration reaction in which an alkyne is treated with borane followed by oxidation with alkaline peroxide to form an enol that rapidly converts into an aldehyde or a ketone. Terminal alkynes form aldehydes, whereas internal alkynes give ketones as the final product.
18.2K
Carboxylic Acids to Methylesters: Alkylation using Diazomethane
2.2K
Carboxylic acids react with diazomethane in an ether solvent via alkylation at the carboxylate oxygen atom to give methyl esters of the corresponding acid with excellent yields.
2.2K
Alkynes to Carboxylic Acids: Oxidative Cleavage
5.1K
Alkynes undergo oxidative cleavage in the presence of oxidizing reagents like potassium permanganate and ozone. The triple bond — one σ bond and two π bonds — is completely cleaved, and the alkyne is oxidized to carboxylic acids. When warm and basic aqueous potassium permanganate is used as an oxidizing agent, alkynes are first converted to carboxylate salts via an unstable α-diketone intermediate. Further, a mild acid treatment protonates the carboxylate anions...
5.1K
Preparation of Carboxylic Acids: Overview
2.6K
There are various methods for the preparation of carboxylic acids. For example, oxidation of primary alcohols or aldehydes using strong oxidizing agents results in a carboxylic acid. Aldehydes can also be oxidized in the presence of mild oxidizing agents.
2.6K


