Gases

**Petroleum Refining Catalysts**

2. **Hydrodesulfurization Catalysts**

3. **Hydrocracking Catalysts**

4. **FCC Catalysts**

5. **Catalytic Reforming Catalysts**

6. **Hydrogenation Catalysts**

7. **Oxidation Catalysts**

8. **Reduction Catalysts**

9. **Automotive Catalysts**

10. **Environmental Catalysts**

11. **Acid Catalysts**

12. **Base Catalysts**

13. **Zeolite Catalysts**

14. **Metal Catalysts**

15. **Metal-Oxide Catalysts**

16. **Photocatalysts**

17. **Biocatalysts / Enzymes**

18. **Polymerization Catalysts**

19. **Biodiesel Catalysts**

20. **Green/Energy Catalysts**

Catalyst in order 𝘁𝗼 𝗶𝗻𝗰𝗿𝗲𝗮𝘀𝗲 𝘁𝗵𝗲 𝗹𝗲𝘃𝗲𝗹 𝗼𝗳 𝗵𝗼𝘂𝘀𝗲𝗵𝗼𝗹𝗱 𝗰𝘆𝗹𝗶𝗻𝗱𝗲𝗿 𝗴𝗮𝘀𝗲𝘀

Zeolite

Alumina, Silica-Alumina, MCM-41, SBA-15, ETS-10):

TiO₂, V₂O₅, Pillared Clays, MgO):

Ion-Exchange Resins, MOFs

Yes, most of the materials you listed are used as catalysts, porous supports, or adsorbents related to gas processes (such as gas adsorption, separation, or catalytic conversion), though they function differently depending on the system. [1, 2, 3, 4, 5]

Porous Materials and Supports

Alumina, Silica-Alumina, MCM-41, SBA-15, ETS-10: These are high-surface-area porous oxides, zeolites, or molecular sieves. They often act as catalyst supports or physical adsorbents for gases like CO₂, methane, and hydrogen. Silica-alumina also provides acidic sites for catalytic cracking or dehydration reactions. [1, 2, 3, 4, 5, 6]

Metal Oxides and Clays

TiO₂, V₂O₅, Pillared Clays, MgO: These are active metal oxide catalysts or modified layered materials. TiO₂ and V₂O₅ are famous for oxidation and reduction reactions (like SCR for emission control), while MgO and pillared clays offer basic or acidic surface sites for gas interactions and catalytic reactions. [1, 2, 3, 4, 5]

Resins and Frameworks

Ion-Exchange Resins: Used mainly in liquid or mild gas-phase purification and catalysis, though less common for high-temperature gas storage compared to rigid porous solids. [1]

MOFs (Metal-Organic Frameworks): Highly tunable crystalline porous materials used extensively for gas storage (H₂, CH₄), gas separation (CO₂ capture), and as heterogeneous catalysts for chemical conversion. [1, 2, 3]