... achievable surface per unit volume and low thermal expansion,ceramic honeycombs are utilized in catalyst carriers, active catalysist ... etc. The Specification of Ceramic Honeycombs 1,Materials: Mullite,Cordierte,AluminaTitanate,Alumina,Spodumene,Zircon,Silicon,Carbide,Stoneware and so on . ... alumina Porous mullite Compacted cordierite Porous cordierite Mullite-Cordierite Stoneware Density 2.7 2.1 2.47 1. ...