Clover-shaped alumina catalyst support

Clover-shaped alumina catalyst support

1. The clover-shaped alumina catalyst support is a alumina (Al₂O₃) catalyst carrier material resembling a clover (clover-like), formed by the aggregation of petal-like pores or particles.
Its core advantages include:

– High specific surface area**: Pores and surface folds between “petals” significantly increase exposed active sites (typically 200–400 m²/g).
– Thermal stability: The alumina framework maintains structural integrity at high temperatures (500–800°C).
– Tunable acid sites: Surface acidity/basicity can be adjusted via doping (e.g., Si, Ti) or modification to suit catalytic reactions.

2. Applications**

1)Petrochemicals:
– Hydrodesulfurization (HDS): Co-Mo-loaded clover alumina supports efficiently remove sulfur compounds from crude oil.
– Fischer-Tropsch synthesis: High surface area enhances CO/H₂ adsorption and conversion.

2)Environmental Protection:
– Automotive exhaust purification: Noble metal (Pt-Pd-Rh) loading in three-way catalytic converters (TWC) reduces NOₓ/CO emissions.
– VOCs catalytic combustion: Acidic surface sites promote low-temperature oxidation of organics.

3)New Energy:
– Methane dry reforming (DRM): Ni-based catalysts leverage the support’s anti-coking properties for extended lifespan.
– Water electrolysis for hydrogen: Serves as a substrate for transition metal oxides (e.g., NiFe₂O₄).