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Related Concept Videos

Catalysis02:50

Catalysis

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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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Reduction of Alkenes: Asymmetric Catalytic Hydrogenation02:17

Reduction of Alkenes: Asymmetric Catalytic Hydrogenation

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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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Related Experiment Video

Updated: Nov 14, 2025

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

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Recent Progress in Heterogeneous Catalysis by Atomically and Structurally Precise Metal Nanoclusters.

Quanquan Shi1,2, Zhaoxian Qin2, Sachil Sharma2

  • 1College of Science, College of Material Science and Art Design, Inner Mongolia Agricultural University, Hohhot, 010018, China.

Chemical Record (New York, N.Y.)
|March 11, 2021
PubMed
Summary
This summary is machine-generated.

Synthesizing atomically precise nanoclusters (≤2 nm) enables better understanding of heterogeneous catalysis. This research develops novel nanoclusters for improved insights into catalytic activity, selectivity, and reaction mechanisms.

Keywords:
Metal nanoclusterscatalytic mechanismheterogeneous catalysissize dependentstructure-properties relationships

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Area of Science:

  • Nanomaterials Science
  • Catalysis
  • Surface Chemistry

Background:

  • Well-defined heterogeneous catalysis relies on understanding atomically precise nanoclusters.
  • Sub-nanometer (≤2 nm) ligand-protected nanoclusters offer tunable properties for catalytic applications.

Purpose of the Study:

  • To develop novel metal nanoclusters with precise atomic structures.
  • To investigate the fundamental aspects of catalysis using these precise nanoclusters.

Main Methods:

  • Synthesis of ligand-protected atomically precise nanoclusters (≤2 nm).
  • Structural determination of synthesized nanoclusters.
  • Evaluation of catalytic performance and properties.

Main Results:

  • Demonstrated feasibility of synthesizing various nanocluster compositions.
  • Provided insights into size-dependent activity and selectivity.
  • Enabled better understanding of reaction mechanisms and active-site identification.

Conclusions:

  • Atomically precise nanoclusters are crucial for advancing heterogeneous catalysis.
  • This work facilitates deeper understanding of catalytic processes at the atomic level.
  • Future research can leverage these findings for tailored catalytic active site design.