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Related Concept Videos

Reduction of Alkenes: Asymmetric Catalytic Hydrogenation02:17

Reduction of Alkenes: Asymmetric Catalytic Hydrogenation

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...
Reduction of Alkenes: Catalytic Hydrogenation02:13

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 surface of...
Heterogeneous Catalysis01:22

Heterogeneous Catalysis

Heterogeneous catalysis involves a catalyst in a different phase from the reactants. It is a process where the catalyst and the reactants are in distinct phases, typically solid and gas or liquid.Most heterogeneous catalysts are metals, metal oxides, or acids. The list includes transition metals like iron (Fe), cobalt (Co), nickel (Ni), palladium (Pd), platinum (Pt), chromium (Cr), manganese (Mn), tungsten (W), silver (Ag), and copper (Cu). These metals possess partially vacant d orbitals that...
Catalysis02:50

Catalysis

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.
Catalysis01:27

Catalysis

Catalysis influences the rate of chemical reactions by providing an alternative reaction pathway with lower activation energy. A catalyst speeds up a reaction, but it is not consumed during the process. The fundamental principle of catalysis is the ability of a catalyst to alter the reaction mechanism, often introducing a more efficient pathway than the uncatalyzed process.In a catalyzed reaction, the catalyst participates directly in the reaction mechanism. It interacts with reactants to form...
Reduction of Alkynes to cis-Alkenes: Catalytic Hydrogenation02:24

Reduction of Alkynes to cis-Alkenes: Catalytic Hydrogenation

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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Related Experiment Video

Updated: May 18, 2026

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

Bimetallic catalysts for hydrogen generation.

Zhehao Wei1, Junming Sun, Yan Li

  • 1The Gene & Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, WA 99164, USA.

Chemical Society Reviews
|September 27, 2012
PubMed
Summary

Bimetallic catalysts offer tunable properties for efficient hydrogen production. This review highlights their role in reforming and related processes, focusing on high-purity hydrogen generation and minimizing carbon monoxide.

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Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production
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Hydrogen Production and Utilization in a Membrane Reactor
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Area of Science:

  • Catalysis
  • Materials Science
  • Chemical Engineering

Background:

  • Bimetallic catalysts exhibit unique properties distinct from monometallic counterparts due to tunable composition and morphostructure.
  • Hydrogen is a promising green energy resource, driving research into efficient production methods.
  • Bimetallic catalysts are crucial for advancing sustainable energy solutions.

Purpose of the Study:

  • To review recent advancements in bimetallic catalysts for hydrogen production.
  • To focus on reforming technologies and related processes like water-gas shift (WGS) and CO preferential oxidation (PROX).
  • To emphasize fundamental understanding of catalytic sites for high-purity hydrogen and minimized CO formation.

Main Methods:

  • Summarizing recent progress in bimetallic catalysts for hydrogen production.
  • Focusing on reforming technologies and associated processes (WGS, PROX).
  • Reviewing synthesis and characterization methods for bimetallic catalysts.

Main Results:

  • Bimetallic catalysts show unique catalytic properties for hydrogen generation.
  • Understanding catalytic sites is key to optimizing hydrogen purity and reducing CO.
  • Various synthesis and characterization techniques are available for bimetallic catalysts.

Conclusions:

  • Bimetallic catalysts are vital for efficient and sustainable hydrogen production.
  • Further research into catalytic site mechanisms will enhance performance.
  • Advanced synthesis and characterization are essential for developing next-generation catalysts.