AL2O3 Organic Waste Gas Treatment Catalyst

AL2O3 organic waste gas treatment catalysts is used as a support material for active metal catalysts to treat organic waste gas, not as a standalone catalyst. It provides a large surface area and porous structure for active metals like nickel (N i),platinum (Pt),and rhodium (Rh)to be dispersed on, increasing their effectiveness in reactions like catalytic oxidation and tar removal from waste gases. For example,Ni/Al2O3 catalysts are used for tar removal,while Pt/Al2O3 is used for deoxygenation of landfill gas.

• Al2O3 provides a stable, high-surface-area support for active metals like nickel (Ni), platinum (Pt), and rhodium (Rh). This allows the active metal to be dispersed as nanoparticles, increasing the number of active sites.
• Its mesoporous structure allows gaseous pollutants to enter and remain in the pores for longer periods, increasing the rate of reaction.
• Al2O3 has acid sites that can contribute to catalytic activity, such as in the cracking of hydrocarbons.

• Ni/Al2O3 catalysts: Used to remove tar from waste gases produced during biomass gasification. They can achieve high tar removal efficiency, often over 99%.
• Pt/Al2O3 catalysts: Used for the deoxygenation of landfill gas by removing volatile organic compounds (VOCs). Coke formation can occur from VOCs, but the catalyst remains effective even with significant coking.
• Rh/Al2O3 catalysts: Used for the removal of pollutants like polycyclic aromatic hydrocarbons (PAHs) in waste incineration. The presence of other pollutants can affect performance, so a catalyst might be modified (e.g., to include sodium) to improve stability.
• Fe2O3/Al2O3 catalysts: Used in catalytic combustion for treating waste gases.

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