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

Reduction of Alkenes: Catalytic Hydrogenation02:13

Reduction of Alkenes: Catalytic Hydrogenation

12.3K
Alkenes undergo reduction by the addition of molecular hydrogen to give alkanes. Because the process generally occurs in the presence of a transition-metal catalyst, the reaction is called catalytic hydrogenation.
Metals like palladium, platinum, and nickel are commonly used in their solid forms — fine powder on an inert surface. As these catalysts remain insoluble in the reaction mixture, they are referred to as heterogeneous catalysts.
The hydrogenation process takes place on the...
12.3K
Reduction of Alkenes: Asymmetric Catalytic Hydrogenation02:17

Reduction of Alkenes: Asymmetric Catalytic Hydrogenation

3.4K
Catalytic hydrogenation of alkenes is a transition-metal catalyzed reduction of the double bond using molecular hydrogen to give alkanes. The mode of hydrogen addition follows syn stereochemistry.
The metal catalyst used can be either heterogeneous or homogeneous. When hydrogenation of an alkene generates a chiral center, a pair of enantiomeric products is expected to form. However, an enantiomeric excess of one of the products can be facilitated using an enantioselective reaction or an...
3.4K

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

Dynamic stability of OER electrocatalysts in water electrolyzers: multiscale deactivation mechanisms and regulation strategies.

Chemical science·2026
Same author

Visualization of Cu-Cluster-Driven CO<sub>2</sub> Electroreduction by Spatiotemporally Coupled In-Situ Electrochemical Mass Spectrometry.

Journal of the American Chemical Society·2026
Same author

Confinement-Driven CO Spillover in CuAg@MSN Tandem Catalysts Boosts C<sub>2</sub> Selectivity Toward Electrocatalytic CO<sub>2</sub> Reduction.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)·2026
Same author

Hydrogel delivery platform of engineered apoptotic vesicles for ischemic stroke therapy.

Journal of nanobiotechnology·2026
Same author

Inside-out-engineered CuO<sub>x</sub>/Ru sites for efficient electrochemical nitrate reduction to ammonia.

Proceedings of the National Academy of Sciences of the United States of America·2026
Same author

Contamination of Engram Coactivity Networks During Forgetting.

bioRxiv : the preprint server for biology·2026
Same journal

Gas-Responsive Metal-Organic Frameworks for Adaptive Thermal Energy Storage with Tunable Charge-Discharge Temperatures.

Journal of the American Chemical Society·2026
Same journal

Engineering a Thiamine-Dependent Benzoylformate Decarboxylase for Stereodivergent Radical C(sp<sup>3</sup>)-C(sp<sup>3</sup>) Bond Formation.

Journal of the American Chemical Society·2026
Same journal

Accelerated Directional Proton-Coupled Electron Transfer Enabled by Intrinsic Dipole Field in Biomimetic α-Helical Structure.

Journal of the American Chemical Society·2026
Same journal

Alternating Current-Driven Hydrogen Isotope Labeling of Aliphatic Amines Using 1,3-Propanedithiol as an Efficient Hydrogen Atom Transfer Reagent.

Journal of the American Chemical Society·2026
Same journal

Two-Dimensional van der Waals Polar Metal MoOBr<sub>2</sub>.

Journal of the American Chemical Society·2026
Same journal

Negatively Curved Chiral Bilayer Nanographene.

Journal of the American Chemical Society·2026
関連記事をすべて見る

関連する実験動画

Updated: Aug 11, 2025

Hydrogen Production and Utilization in a Membrane Reactor
10:00

Hydrogen Production and Utilization in a Membrane Reactor

Published on: March 10, 2023

2.5K

堅固な水素酸化のための偽Pt単層

Tonghui Zhao1, Mengting Li2, Dongdong Xiao3

  • 1Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education), Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan430074, China.

Journal of the American Chemical Society
|February 3, 2023
PubMed
まとめ
この要約は機械生成です。

標準のPt/C触媒と比較して,新しい擬似Pt原子層 (PmPt) 触媒は,IrPdコアマトリックスで,アルカリ水素酸化反応の活性と安定性が著しく向上しています.

さらに関連する動画

Catalytic Reactions at Amine-Stabilized and Ligand-Free Platinum Nanoparticles Supported on Titania During Hydrogenation of Alkenes and Aldehydes
12:08

Catalytic Reactions at Amine-Stabilized and Ligand-Free Platinum Nanoparticles Supported on Titania During Hydrogenation of Alkenes and Aldehydes

Published on: June 24, 2022

3.6K
Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production
08:40

Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production

Published on: December 6, 2021

3.6K

関連する実験動画

Last Updated: Aug 11, 2025

Hydrogen Production and Utilization in a Membrane Reactor
10:00

Hydrogen Production and Utilization in a Membrane Reactor

Published on: March 10, 2023

2.5K
Catalytic Reactions at Amine-Stabilized and Ligand-Free Platinum Nanoparticles Supported on Titania During Hydrogenation of Alkenes and Aldehydes
12:08

Catalytic Reactions at Amine-Stabilized and Ligand-Free Platinum Nanoparticles Supported on Titania During Hydrogenation of Alkenes and Aldehydes

Published on: June 24, 2022

3.6K
Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production
08:40

Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production

Published on: December 6, 2021

3.6K

科学分野:

  • 材料科学
  • 電気化学
  • キャタリシス

背景:

  • ヘテロエピタキシアルなコア・シェル構造は,高度な触媒用途に相乗効果をもたらします.
  • 効率的で安定した触媒の開発は,アルカリ媒体の水素酸化反応に不可欠です.

研究 の 目的:

  • IrPd-コアマトリックス (PmPt@IrPd/C) で表軸的に成長した擬似Pt原子層 (PmPt) を合成し,特徴づけること.
  • アルカリ水素酸化反応におけるPmPt@IrPd/C触媒の触媒性能と安定性を評価する.
  • 活動と安定性を高めるための根本的なメカニズムを調査する.

主な方法:

  • IrPd-コア/炭素のサポートにシドモルフPt原子層のエピタキシアル成長.
  • アルカリの電解質における水素酸化反応 (HOR) の活性と耐久性の電気化学的試験
  • 50,000サイクル以上の安定性テスト.
  • アニオン交換膜燃料電池 (AEMFC) の性能評価について

主要な成果:

  • PmPt@IrPd/Cは,塩基性HORの基準Pt/Cの約29. 2倍の質量活性増強を示した.
  • 触媒は5万サイクルでの安定性試験で 25.0倍以上の活性度を示した.
  • 強化された安定性は,炭素の腐食と調節されたヒドロキシル吸収に対する耐性による.
  • PmPt@IrPd/Cを使用した超低Pt負荷 (0.009 mgPt cm−2) のAEMFCは1.27W cm−2の電力密度を達成した.

結論:

  • PmPt@IrPd/Cコアシェル触媒は,アルカリ水素酸化触媒の重要な進歩を表しています.
  • この新しい構造は優れた活性,安定性,および燃料電池におけるプラチナの使用量の削減の可能性を提供します.
  • この発見は,クリーンエネルギーアプリケーションのための次世代の触媒の開発への道を開きます.