(C_5H_7N_2)_3(AsMo_(12)O_(40))·3C_5H_6N_2·2H_2O的水热合成、晶体结构及催化性能  

Hydrothermal Synthesis,Crystal Structure and Catalytic Performance of(C_5H_7N_2)_3(AsMo_(12)O_(40))·3C_5H_6N_2·2H_2O

作　　者：蔡铁军[1] 申晓明[1] 吕数子[1] 彭振山[1] 刘金[1] 邓谦[1] 

机构地区：[1]湖南科技大学化学化工学院,湘潭411201

出　　处：《应用化学》2011年第3期284-289,共6页Chinese Journal of Applied Chemistry

基　　金：理论化学与分子模拟省部共建教育部重点实验室资助项目(教技函[2008]153号)

摘　　要：采用水热法合成了一种新的3-氨基吡啶砷钼多金属氧酸盐配合物(C5H7N2)3(AsMo12O40).3C5H6N2.2H2O。通过单晶X射线衍射、红外光谱、紫外光谱和差热-热重对其进行了表征。用催化消除丙酮的反应为模式反应,测试了配合物的催化性能。研究结果表明,标题配合物是由Keggin结构[AsMo12O40]3-杂多阴离子、[C5H7N2]+阳离子、[C5 H6 N2]分子和结晶水分子组成。配合物属于单斜晶系,P21/n空间群;晶胞参数a=1.33820(12)nm,b=2.2542(2)nm,c=1.9848(2)nm,β=100.27(3)°,V=5.8912(10)nm3,Z=4,Rgt(F)=0.0590,wRref(F2)=0.1882。配合物对催化消除丙酮具有较好的的活性,催化实验结果表明,160℃下,0.20 g的催化剂可将初始浓度均为1.3 g/m3,流速为4.5 mL/min的丙酮完全消除。A novel compound, （C5H7N2）3 （AsMo12O40） -3C5H6N2 -2H2O, has been synthesized under hydrothermal conditions and characterized by single-crystal X-ray diffraction, IR, UV/Vis and TG-DTA. Using catalytic elimination reaction of acetone as a model reaction, the catalytic performance of the title compound has been tested. The results indicate that the structure of the title compound consists of [ AsMo12O40] 3- heteropolyoxoanion, [ C5H7N2 ] ＋ cations, [ C5H6N2 ] molecules and water molecules. The compound crystallizes in the monoclinic, space group P21/n, a = 1. 33820（12） nm,b =2. 2542（2） nm,c = 1.9848（2） nm,β = 100. 27（3）°,V=5. 8912（10） nm3 ,Z =4,Rgt（F） =0. 0590,wRref（F2） =0. 1882. The compound has a good catalytic activity for the elimination of acetone. When the initial concentration of acetone is 1.3 g/m3 in the air with a flow velocity of 4. 5 mL/min, the acetone is completely eliminated at 160℃ over 0. 20 g of the title compound.

关 键 词：多金属氧酸盐 丙酮 水热合成 晶体结构 催化性能 

分 类 号：O614[理学—无机化学]