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Heterogeneous Catalysis

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...

Reduction of Alkenes: Asymmetric Catalytic Hydrogenation

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...

Catalysis

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.

Reduction of Alkenes: Catalytic Hydrogenation

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...

Properties of Organometallic Compounds

Properties of Organometallic Compounds

Organometallic compounds are compounds that contain a carbon–metal bond. Carbon belongs to an organyl group like alkyl, aryl, allyl, or benzyl groups. The metal can be from Group I or Group II of the periodic table, a transition metal, or a semimetal.

Reduction of Alkynes to cis-Alkenes: Catalytic Hydrogenation

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

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Co-localizing Kelvin Probe Force Microscopy with Other Microscopies and Spectroscopies: Selected Applications in Corrosion Characterization of Alloys

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Intermetallic Heusler Alloys for Catalysis.

Min Luo¹, Ziwei Xiang², Jiao Lan²

¹Shanghai Technical Institute of Electronics & Information, Shanghai, China.

|June 15, 2026

Summary

This summary is machine-generated.

Intermetallic Heusler alloys show great potential as catalysts for various chemical reactions, including hydrogenation and water splitting. Research is rapidly advancing, highlighting their future promise in catalysis.

Keywords:

Heusler alloys application catalysis preparation

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Area of Science:

Materials Science
Catalysis
Intermetallic Compounds

Background:

Heusler alloys are intermetallic compounds with unique crystal structures and tunable electronic properties.
These materials are increasingly recognized for their potential in chemical and electrochemical catalysis.

Purpose of the Study:

To provide a comprehensive review of intermetallic Heusler alloys as catalytic materials.
To focus on preparation methods and catalytic applications.

Main Methods:

Literature review of recent developments in Heusler alloy catalysis.
Analysis of applications in hydrogenation, dehydrogenation, water splitting, and field-assisted catalysis.

Main Results:

Heusler alloys demonstrate promising catalytic activity.
Current research is in an early but rapidly developing stage.

Conclusions:

Intermetallic Heusler alloys are emerging as versatile catalysts.
Future prospects include diverse applications in advanced catalytic processes.