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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...

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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Updated: Jul 6, 2026

Synthesis of Platinum-nickel Nanowires and Optimization for Oxygen Reduction Performance

Synthesis of Platinum-nickel Nanowires and Optimization for Oxygen Reduction Performance

Published on: April 27, 2018

High performance platinized titanium nitride catalyst for methanol oxidation.

O T Muhammed Musthafa¹, Srinivasan Sampath

¹Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560 012, India.

Chemical Communications (Cambridge, England)

|April 11, 2008

Summary

This summary is machine-generated.

Platinized titanium nitride (TiN) is an effective catalyst for methanol oxidation. Its use alleviates carbon monoxide (CO) poisoning, unlike other catalysts.

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Area of Science:

Electrochemistry
Materials Science
Catalysis

Background:

Methanol electro-oxidation is crucial for fuel cells.
Carbon monoxide (CO) poisoning is a major challenge for electrocatalysts.
Ruthenium (Ru)-based catalysts are common but have limitations.

Purpose of the Study:

To investigate platinized titanium nitride (Pt/TiN) as a catalyst for methanol electro-oxidation.
To evaluate the performance and stability of Pt/TiN.
To understand the role of TiN in mitigating CO poisoning.

Main Methods:

Electrochemical characterization techniques were employed.
Methanol oxidation was studied using cyclic voltammetry and chronoamperometry.
Surface analysis was performed to understand catalyst composition and structure.

Main Results:

Platinized TiN demonstrated high catalytic activity for methanol oxidation.
The presence of TiN significantly alleviated the CO poisoning effect.
Pt/TiN showed improved stability compared to traditional catalysts.

Conclusions:

Platinized TiN is a promising, cost-effective catalyst for methanol electro-oxidation.
TiN plays a key role in enhancing catalyst durability by reducing CO adsorption.
This material offers an alternative to Ru-based catalysts in electrochemical applications.