MOR Zeolite: High-Capacity Adsorbent for CO₂ Capture

Introduction

Mordenite (MOR) zeolites are recognized for their exceptional properties as adsorbents, particularly in the context of carbon dioxide (CO₂) capture. These materials exhibit a unique combination of high surface area, well-defined pore structure, and tunable chemical composition, making them ideal candidates for efficient CO₂ removal from various gas streams. This article explores the key characteristics, advantages, and applications of MOR zeolites in CO₂ capture technologies.

Key Performance Indicators (KPIs)

• Surface Area: Typically ranges from 500 to 700 m²/g, providing extensive surfaces for adsorption.
• Pore Size Distribution: Characterized by uniform micropores (~0.67 nm), which facilitate selective adsorption of small molecules like CO₂.
• Structure: A three-dimensional framework with interconnected channels, enhancing diffusion and mass transfer.
• Thermal Stability: Stable up to temperatures exceeding 800°C, ensuring durability under harsh conditions.
• Mechanical Strength: Offers good resistance to mechanical stress and attrition, suitable for long-term operation.

Chemical Composition and Microstructure

MOR zeolites are primarily composed of silicon dioxide (SiO₂) and aluminum oxide (Al₂O₃). The Si/Al ratio can be adjusted during synthesis to optimize the material's acidity and hydrothermal stability. The microstructure of MOR zeolites consists of straight and sinusoidal channels that provide ample space for molecule trapping and storage. This intricate architecture enables MOR zeolites to effectively adsorb and retain CO₂ molecules, making them highly effective in carbon capture applications.

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