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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.

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For many years, scientists thought that enzyme-substrate binding took place in a simple "lock-and-key" fashion. This model stated that the enzyme and substrate fit together perfectly in one instantaneous step. However, current research supports a more refined view scientists call induced fit. The induced-fit model expands upon the lock-and-key model by describing a more dynamic interaction between enzyme and substrate. As the enzyme and substrate come together, their interaction causes...

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Carbocatalysis with pristine graphite: on-surface nanochemistry assists solution-based catalysis.

Brent Daelemans¹, Nerea Bilbao², Wim Dehaen³

¹Division of Molecular Imaging and Photonics, Department of Chemistry, KU Leuven-University of Leuven, Celestijnenlaan 200 F, 3001 Leuven, Belgium. steven.defeyter@kuleuven.be nerea.bilbao@kuleuven.be and Division of Molecular Design and Synthesis, Department of Chemistry, KU Leuven-University of Leuven, Celestijnenlaan 200 F, 3001 Leuven, Belgium. wim.dehaen@kuleuven.be.

Chemical Society Reviews

|January 6, 2021

Summary

Carbocatalysis offers a sustainable alternative to metal catalysts. Analyzing the carbon material

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Area of Science:

Sustainable Chemistry
Materials Science

Background:

Carbocatalysis is a sustainable alternative to metal-based catalysis.
Surface analysis of carbon materials is gaining importance in catalysis research.

Purpose of the Study:

To explore the potential of self-assembly on graphite for directing chemical reactions.
To rationalize selectivity in carbocatalysis by linking in-solution and on-surface composition.

Main Methods:

Utilizing high-resolution imaging techniques, such as scanning tunneling microscopy (STM).
Analyzing the on-surface composition of heterogeneous carbocatalysts.

Main Results:

Self-assembly on graphite shows promise in directing chemical reaction outcomes.
STM provides insights into rate and selectivity effects induced by carbocatalysts.

Conclusions:

Linking in-solution and on-surface composition is key to rationalizing selectivity in carbocatalysis.
Pristine graphite surfaces offer a platform for controlled catalytic processes.