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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 new 3-aminopyridine arsenic molybdenum polyoxometalate complex (C5H7N2) 3 (AsMo12O40) .3C5H6N2.2H2O was synthesized by hydrothermal method. It was characterized by single crystal X-ray diffraction, FTIR, UV-Vis and DTA-TG. Catalytic elimination of acetone as the mode reaction, the catalytic performance of the complex was tested. The results show that the title complex is composed of Keggin structure [AsMo12O40] 3-heteropolyanion, [C5H7N2] + cation, [C5H6N2] molecule and crystal water molecule. The complex belongs to the monoclinic space group P21 / n. The cell parameters a = 1.33820 (12) nm, b = 2.2542 (2) nm, c = 1.9848 (2) nm, β = 100.27 = 5.8912 (10) nm3, Z = 4, Rgt (F) = 0.0590, wRref (F2) = 0.1882. The results of catalytic experiments showed that the catalyst with 0.20 g at 160 ℃ could eliminate 1.3 g / m 3 of initial concentration of acetone at a flow rate of 4.5 mL / min.