Shape: Pellets, Color: white, transparent or translucent. Average pore diameter: 8.0-12.0nm, Specific surface area: 300600m'/g. Pore volume: 0.8-1.1 ml/g. Specific heat: 0.92KJ/kg. 'c . Thermal conductivity: 0.167 KJ/m.hr. c , Internally welldistributed micro-pored structure. Physically and chemically stable. Good thermal stability, High mechanical strength.