Molecular sieves are crystalline metallic aluminosilicates with a three-dimensional interconnecting network of silica and alumina tetrahedra. To create cavities of uniform size, the natural water of hydration inside them is removed by heating. This makes them efficient in absorbing molecules of a specific size. Western Adsorbents & Catalysts offer certified and industrial standards. We provide various grades of molecular sieves such as 3A, 4A, 5A, and 13X. In this blog, we will go through their types and industrial applications.
Types of Carbon Molecular Sieves
Based on the raw material, structure, modification and applications, Carbon molecular sieves are widely divided into more than 20 types, such as coal-based, coconut shell-based, granular or powdered, activated or doped, and nitrogen-generating CMS or hydrogen-purification CMS, and many more. Some of them are mentioned below. All of these ranges are available at Western Adsorbents and Catalysts, a top carbon molecular sieves supplier in India, at the most competitive prices. Our sieves are made with the highest levels of industrial-grade material and perform efficiently in all applications. We also offer a range of high-grade carbon materials, including anthracite coal, activated carbon, ceramic and alumina balls, and ion-exchange resins. Interested? Call us to place an order.
| Type | Key Features | Main Applications |
| Coal-based CMS | Most common type; strong, stable pore size (~4 Å) | Nitrogen generation (PSA systems) |
| Coconut shell-based CMS | High microporosity, eco-friendly, good selectivity | High-purity nitrogen and gas purification |
| Polymer-based CMS | Made from polymers like polyimide; tunable pore size | Advanced gas separation (O₂/N₂, CO₂/CH₄) |
| Granular or Pellet CMS | Hard, durable form for easy gas flow | Industrial nitrogen generators |
| Membrane CMS | Thin films or hollow fibers for fine separation | Hydrogen purification, CO₂ removal |
| Activated or Doped CMS | Chemically modified for higher selectivity | Specialized gas separations (e.g., CO₂ capture) |
Applications of Molecular Sieves
- Air Drying
- Cracked Gas & Olefins Drying
- Liquid & Gas Propylene Drying
- Drying of benzene, hexane, kerosene, etc.
- Removal of Moisture
- Dehydrating solvents, gases, & liquids.