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Updated: May 30, 2025

Hydrogen Production and Utilization in a Membrane Reactor
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Published on: March 10, 2023

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Pd1Ni2 トリマーサイトは,アルカリ媒体で効率的かつ持続的な水素酸化を促進します

Shu-Qi Wang1,2, Ze-Cheng Yao2,3, Zhuo-Qi Shi2,3

  • 1Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China.

Journal of the American Chemical Society
|January 31, 2025
PubMed
まとめ

研究者はアニオン交換膜燃料電池 (AEMFC) のためのPd単原子触媒 (Pd1/Ni3N) を開発した. この触媒は水素酸化反応 (HOR) の運動性を強化し,クリーンエネルギー用途のAEMFCの効率と耐久性を改善します.

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Reduction of Alkenes: Catalytic Hydrogenation

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...
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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...
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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.
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The presence of a catalyst affects the rate of a chemical reaction. A catalyst is a substance that can increase the reaction rate without being consumed during the process. A basic comprehension of a catalysts’ role during chemical reactions can be understood from the concept of reaction mechanisms and energy diagrams.
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