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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...

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Updated: Jun 12, 2026

Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production

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

Multifunctional mesoporous composite microspheres with well-designed nanostructure: a highly integrated catalyst

Yonghui Deng¹, Yue Cai, Zhenkun Sun

¹Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200433, People's Republic of China.

Journal of the American Chemical Society

|May 29, 2010

Summary

Researchers developed multifunctional magnetic microspheres with gold nanoparticles for catalysis. These novel nanocomposites offer high efficiency, reusability, and easy magnetic separation for industrial applications.

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Synthesis and Catalytic Performance of Gold Intercalated in the Walls of Mesoporous Silica

Synthesis and Catalytic Performance of Gold Intercalated in the Walls of Mesoporous Silica

Published on: July 9, 2015

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Last Updated: Jun 12, 2026

Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production

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

Synthesis and Catalytic Performance of Gold Intercalated in the Walls of Mesoporous Silica

Synthesis and Catalytic Performance of Gold Intercalated in the Walls of Mesoporous Silica

Published on: July 9, 2015

Area of Science:

Materials Science
Nanotechnology
Catalysis

Background:

Integrated functional nanocomposites require precise control over component size, morphology, surface chemistry, and assembly.
Developing advanced catalytic materials is crucial for efficient industrial processes.

Purpose of the Study:

To fabricate multifunctional microspheres with a unique nanostructure for enhanced catalytic performance.
To investigate the catalytic activity, selectivity, and reusability of the designed microspheres.

Main Methods:

Fabrication of microspheres with a silica-protected magnetite core, a gold nanoparticle transition layer, and an ordered mesoporous silica shell.
Characterization of microsphere properties including magnetization, surface area, and pore structure.
Evaluation of catalytic performance in the reduction of 4-nitrophenol and styrene epoxidation.

Main Results:

The microspheres exhibited high magnetization (18.6 emu/g) and large surface area (236 m²/g).
They featured accessible gold nanoparticles within highly open mesopores (approx. 2.2 nm).
High catalytic efficiency was observed: 95% conversion of 4-nitrophenol in 12 min and 72% conversion with 80% selectivity for styrene epoxidation.

Conclusions:

The designed multifunctional microspheres serve as a novel, stable, and accessible catalyst system.
Their magnetic separability, reusability, and high catalytic performance make them suitable for various industrial catalytic processes.