FAUJASITE-BASED ZEOLITE AND METHOD FOR PRODUCING THE SAME

To provide a faujasite-based zeolite having high crystallinity, a great specific surface area 2-10nm of pores in a region with pore diameters of 2 to 10 nm, and a high percentage of the specific surface area 2-10nm occupied in a specific surface area 2-200nm of pores in a region with pore diameters of 2 to 200 nm.SOLUTION: A faujasite-based zeolite is characterized by (a) a molar ratio of SiO2/Al2O3 of 4 or more and 10 or less, (b) a specific surface area 2 to 10 nm of pores in a region with pore diameters of 2 to 10 nm being 60 m2/g or more and 120 m2/g or less, (c) the percentage of the specific surface area 2-10nm occupied in a specific surface area 2-200nm of pores in a region with pore diameters of 2 to 200 nm being 85% or more, and (d) a crystallinity of 0.70 or more.SELECTED DRAWING: None 【課題】結晶性が高く、細孔直径が２～１０ｎｍの領域にある細孔の比表面積2-10nmが大きく、２～２００ｎｍの領域にある細孔の比表面積2-200nmに占める前記比表面積2-10nmの割合が多いフォージャサイト型ゼオライトを提供すること。【解決手段】（ａ）ＳｉＯ２／Ａｌ２Ｏ３のモル比が４以上かつ１０以下、（ｂ）細孔直径が２～１０ｎｍの領域にある細孔の比表面積２～１０ｎｍが６０ｍ２／ｇ以上かつ１２０ｍ２／ｇ以下、（ｃ）細孔直径が２～２００ｎｍの領域にある細孔の比表面積2-200nmに占める前記比表面積2-10nmの割合が８５％以上、（ｄ）結晶化度が０．７０以上、である、フォージャサイト型ゼオライト。【選択図】なし