... Activated alumina has large capacity of absorption, high surface area, high strength and thermal stability, which is widely used ... Activated alumina has large capacity of absorption, high surface area, high strength and thermal stability, which is widely used ... Φ4-6Φ1-2Φ4-6Φ4-6/gSurface area≥280≥300≥200≥300≥240≥300ml/gPorosity0.380.380 ... ≥50 Activated Alumina catalyst with high specific surface area