Jove
Visualize
お問い合わせ
JoVE
x logofacebook logolinkedin logoyoutube logo
JoVEについて
概要リーダーシップブログJoVEヘルプセンター
著者向け
出版プロセス編集委員会範囲と方針査読よくある質問投稿
図書館員向け
推薦の声購読アクセスリソース図書館諮問委員会よくある質問
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experimentsアーカイブ
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教員リソースセンター教員サイト
利用規約
プライバシーポリシー
ポリシー

関連する概念動画

The Citric Acid Cycle02:36

The Citric Acid Cycle

152.6K
The citric acid cycle, also known as the Krebs cycle or TCA cycle, consists of several energy-generating reactions that yield one ATP molecule, three NADH molecules, one FADH2 molecule, and two CO2 molecules.
152.6K
Enolate Mechanism Conventions01:15

Enolate Mechanism Conventions

2.2K
When a carbonyl compound is treated with a strong base, the α position gets deprotonated to give a resonance-stabilized intermediate called an enolate. Enolates are ambident nucleophiles because they possess two nucleophilic sites that can attack an electrophile owing to the delocalization of the negative charge between the α carbon and oxygen atoms. When the oxygen atom attacks an electrophile, it is called O-attack, whereas electrophilic attack via the α carbon is known as...
2.2K
α-Hydroxy Ketones via Reductive Coupling of Esters: Acyloin Condensation Overview01:19

α-Hydroxy Ketones via Reductive Coupling of Esters: Acyloin Condensation Overview

2.9K
The pinacol and McMurry reactions involve the reductive coupling of ketones or aldehydes. Similarly, the bimolecular reductive coupling of two ester molecules in the presence of sodium metal in an aprotic solvent yields an α-hydroxy ketone product. The α-hydroxy ketone is also called acyloin, so the reaction is referred to as ‘acyloin condensation.’
2.9K
Alkylation of β-Ketoester Enolates: Acetoacetic Ester Synthesis01:07

Alkylation of β-Ketoester Enolates: Acetoacetic Ester Synthesis

3.5K
Acetoacetic ester synthesis is a method to obtain ketones from alkyl halides and β-keto esters. The reaction occurs in the presence of an alkoxide base that abstracts the acidic proton of the β-keto esters. The step results in an enolate ion which is doubly stabilized. The enolate then reacts with an alkyl halide via the SN2 process to produce an alkylated ester intermediate with a new C–C bond. The hydrolysis of the intermediate, followed by acidification, results in an...
3.5K
Thermal Electrocyclic Reactions: Stereochemistry01:17

Thermal Electrocyclic Reactions: Stereochemistry

2.1K
The stereochemistry of electrocyclic reactions is strongly influenced by the orbital symmetry of the polyene HOMO. Under thermal conditions, the reaction proceeds via the ground-state HOMO.
Selection Rules: Thermal Activation
Conjugated systems containing an even number of π-electron pairs undergo a conrotatory ring closure. For example, thermal electrocyclization of (2E,4E)-2,4-hexadiene, a conjugated diene containing two π-electron pairs, gives trans-3,4-dimethylcyclobutene.
2.1K
Electron Carriers01:24

Electron Carriers

85.4K
Electron carriers can be thought of as electron shuttles. These compounds can easily accept electrons (i.e., be reduced) or lose them (i.e., be oxidized). They play an essential role in energy production because cellular respiration is contingent on the flow of electrons.
Over the many stages of cellular respiration, glucose breaks down into carbon dioxide and water. Electron carriers pick up electrons lost by glucose in these reactions, temporarily storing and releasing them into the electron...
85.4K

こちらも読む

関連記事

共著者、ジャーナル、引用グラフによってこの研究に関連する記事。

並び替え
Same author

Pulse-Driven Paired Electrosynthesis of Formamide via Redox-Tuned Intermediate Management.

Journal of the American Chemical Society·2026
Same author

Generative Discovery of Alloy Catalysts for Radical-Mediated Methane-to-Methanol Conversion.

Journal of the American Chemical Society·2026
Same author

Cerebellum-inspired memtransistors enable emergent differentiation for hardware-efficient novelty detection.

Nature communications·2026
Same author

Impact of Metal Heterogeneity on Multivariate and High-Entropy MOF SBUs.

Journal of the American Chemical Society·2026
Same author

Bipolar membranes reveal surface-hydroxyl-structure-dependent water dissociation mechanism.

Nature communications·2026
Same author

Topologically Programmed Dual-Channel Covalent Organic Frameworks Decouple Gas and Ion Fluxes for Acidic CO<sub>2</sub> Electroreduction.

Journal of the American Chemical Society·2026

関連する実験動画

Updated: Jul 31, 2025

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction
10:57

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction

Published on: April 10, 2018

18.3K

制限されたC2アドソルベート方向は,CO-to-アセテート電還元を可能にします.

Jian Jin1,2, Joshua Wicks3, Qiuhong Min1

  • 1School of Optical and Electronic Information, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, China.

Nature
|May 3, 2023
PubMed
まとめ

この研究は,炭素一酸化物をアセテットに変換する非常に選択的な銅銀触媒を開発しました. 化学薬品の製造におけるエネルギー効率と 下流分離を向上させています

さらに関連する動画

Versatile CO2 Transformations into Complex Products: A One-pot Two-step Strategy
07:36

Versatile CO2 Transformations into Complex Products: A One-pot Two-step Strategy

Published on: November 9, 2019

8.1K
In situ FTIR Spectroscopy as a Tool for Investigation of Gas/Solid Interaction: Water-Enhanced CO2 Adsorption in UiO-66 Metal-Organic Framework
11:38

In situ FTIR Spectroscopy as a Tool for Investigation of Gas/Solid Interaction: Water-Enhanced CO2 Adsorption in UiO-66 Metal-Organic Framework

Published on: February 1, 2020

16.1K

関連する実験動画

Last Updated: Jul 31, 2025

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction
10:57

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction

Published on: April 10, 2018

18.3K
Versatile CO2 Transformations into Complex Products: A One-pot Two-step Strategy
07:36

Versatile CO2 Transformations into Complex Products: A One-pot Two-step Strategy

Published on: November 9, 2019

8.1K
In situ FTIR Spectroscopy as a Tool for Investigation of Gas/Solid Interaction: Water-Enhanced CO2 Adsorption in UiO-66 Metal-Organic Framework
11:38

In situ FTIR Spectroscopy as a Tool for Investigation of Gas/Solid Interaction: Water-Enhanced CO2 Adsorption in UiO-66 Metal-Organic Framework

Published on: February 1, 2020

16.1K

科学分野:

  • 電気化学
  • カタリシス
  • 材料科学

背景:

  • 二酸化炭素と一酸化炭素の電気化学的還元は,低炭素電力を使用して化学製造を脱炭素化するための経路を提供します.
  • 銅 (Cu) は炭素-炭素結合に使用され,複数のC2+化学物質を生成しますが,単一の製品に対して選択性を達成することは依然として課題です.
  • アセタートはアセティック酸市場にとって重要なC2化合物です.

研究 の 目的:

  • 炭素一酸化物からアセテット電合成のための高度選択的触媒を開発する.
  • 希釈された金属原子分散を用いてケテン中間物質の安定化を調査する.
  • 電気化学変換における単一のC2+製品の選択性を高める.

主な方法:

  • 溶解銅銀 (Cu-in-Ag) 合金材料の合成 約1原子%のCu.
  • 炭素一酸化物 (CO) からアセテットの電気合成,高COカバーと10 atmの圧力.
  • X線吸収スペクトロスコーピーを操作して,現場で生成された活性サイトを特定します.

主要な成果:

  • Cu-in-Ag合金は,アセテット電合成に対して高い選択性を示している.
  • 4 原子未満の in situ 生成 Cu クラスタが活性サイトとして特定されました.
  • 他の製品よりもアセテットの選択性比は12%で 顕著な改善です
  • COからアセテートへのファラダイク効率は 820時間以上で 91%と85%と報告された.

結論:

  • 希釈 Cu-Ag 合金では,ケテンの中間物質を安定させることで,高度に選択的なアセテット電合成を可能にします.
  • 触媒の設計と原子炉の工学は高い効率と長期の安定性を達成した.
  • 単一のC2+製品に対するファラダイク効率の最大化は,電気化学プロセスにおけるエネルギー効率と分離に不可欠です.