[1E10-11] International sess. 4

[1E10] Synthesis of zeolitic Mo-doped vanadotungstate materials with tailorable oxidability and acidity

○Meilin Tao¹, Satoshi Ishikawa¹, Wataru Ueda¹ (1. Faculty of engineering, department of material and life chemistry, Kanagawa University)

Previously, our group reported a kind of microporous zeolitic transition metal oxides based on vanadotungstate (VT-1), which is constructed by connecting cubane clusters [W₄O₁₆]^8- with VO²⁺ linkers. Here we synthesized a series of Mo-doped vanadotungstate materials Mo_xW_4-x (x = 0.2-1.0), in which some W in the cubane unit was replaced by Mo. The porosities of the new materials were improved compared to VT-1, and Mo_0.6W_3.4 showed the highest surface areas as high as 296 m²·g^-1. The redox ability and acidity can be tailored by changing the Mo doping amount. The materials exhibited good catalytic activity in NH₃-SCR with reaction temperature as low as 120 ℃.