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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.

Introduction to Functional Groups

Introduction to Functional Groups

Functional groups are group of atoms with specific chemical properties that occur within organic molecules and sometimes denoted as “R”. Functional groups are found along the carbon backbone of macromolecules can form chains or rings of carbon atoms. Functional groups can “functionalize” a compound by enabling it to adopt different physical and chemical properties.
Types of common functional groups
The table below summarizes some of the major functional groups in...

Overview of Advanced Functional Groups

Overview of Advanced Functional Groups

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Types of Advanced Functional Groups
The table below summarizes some of the major functional groups in organic chemistry.

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.

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...

Carbon-dioxide Fixation

Carbon-dioxide Fixation

Carbon dioxide fixation in prokaryotes enables the assimilation of inorganic carbon into organic molecules, supporting biosynthetic pathways, sustaining ecosystems, and contributing to the global carbon cycle. It also has industrial applications in carbon capture and bioproduct synthesis. Autotrophic organisms rely on this process to utilize CO₂ as a carbon source in diverse environments.The Calvin CycleThe Calvin cycle is the most widespread carbon fixation mechanism, primarily used by...

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Related Experiment Video

Updated: May 1, 2026

Synthesis and Characterization of Functionalized Metal-organic Frameworks

Synthesis and Characterization of Functionalized Metal-organic Frameworks

Published on: September 5, 2014

Amine-Functionalized Meso-Macroporous Polymers for Efficient CO₂ Capture from Ambient Air.

Masood S Alivand¹, Umma Habiba¹, Mohsen Ghasemian¹

¹Department of Chemical Engineering, Faculty of Engineering, Monash University, Clayton, Victoria 3800, Australia.

ACS Applied Materials & Interfaces

|April 1, 2024

Summary

Researchers developed new melamine formaldehyde (MF) materials for direct air capture (DAC) of carbon dioxide (CO2). These novel nanoadsorbents offer high CO2 uptake and low cost, addressing key challenges in DAC technology deployment.

Keywords:

direct air capture extra-high pore volume melamine formaldehyde meso-macroporous materials phase inversion method

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Author Spotlight: Standardizing the Development of Amine-Based Silica Composites as CO2 Adsorbents for Direct Air Capture

Author Spotlight: Standardizing the Development of Amine-Based Silica Composites as CO2 Adsorbents for Direct Air Capture

Published on: September 29, 2023

Area of Science:

Materials Science
Chemical Engineering
Environmental Science

Background:

Direct air capture (DAC) is crucial for mitigating climate change.
Current DAC technologies face challenges with nanoadsorbent performance and cost.
Solid nanoadsorbents are key for efficient CO2 capture.

Purpose of the Study:

To develop novel, cost-effective nanoadsorbents for direct air capture.
To investigate the CO2 uptake capacity of melamine formaldehyde (MF) materials.
To enhance the performance of DAC technologies through improved adsorbent materials.

Main Methods:

Fabrication of meso-macroporous melamine formaldehyde (MF) materials.
Impregnation of MF materials with tetraethylenepentamine (TEPA) to create nanoadsorbents.
Characterization of pore volume, pore diameter, and CO2 adsorption capacity.

Main Results:

MF materials exhibit ultrahigh pore volume (5.19 cm3/g) and large average pore diameter (24.6 nm).
MF-TEPA nanoadsorbents achieved high CO2 uptake (2.65 mmol/g at 71 wt% TEPA loading).
The nanoadsorbents demonstrated stable performance across various conditions and forms.

Conclusions:

Novel MF-based nanoadsorbents offer a promising solution for efficient and cost-effective DAC.
The facile synthesis and superior properties of MF materials pave the way for next-generation DAC applications.
This research presents a scalable approach for developing advanced materials for carbon capture.