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WO_2/钛铝胶系列样品通过浸渍法制备.XRD 和XPS 测定结果表明WO_3单层分散在钛铝胶表面,分散阈值为0.22g WO_3/(100m~2).假定WO_3在钛铝胶表面按照密置单层模型分散,其计算值为0.198g WO_3/(100m~2).表明测定值与理论模型的计算值相接近.LRS测定表明:当WO_3的载量低于0.082g WO_3/(100m~2钛铝胶)时,只有四而体配位的钨存在;当WO_3的载量超过0.082g WO_3/(100m~2钛铝胶)时,钨主要以八面体配位存在.同时,LRS的实验结果也表明,550℃焙烧的WO_3/钛铝胶样品没有Al_2(WO_4)_3生成.对高温焙烧条件下,Al_2(WO_4)_3的生成也进行了研究.
WO2 / TiAl2O4 samples were prepared by impregnation method.The results of XRD and XPS showed that the WO3 monolayer was dispersed on the surface of TiAl paste with a dispersion threshold of 0.22g WO3 / (100m2) The single layer model was dispersed and the calculated value was 0.198g WO_3 / (100m ~ 2), which showed that the measured value was close to the theoretical model. The LRS measurement showed that when the loading of WO_3 was less than 0.082g WO_3 / (100m ~ 2 titanium aluminate), only tetrahedrally coordinated tungsten existed.When the loading of WO_3 exceeds 0.082g WO_3 / (100m ~ 2 TiAl 2 O 3), tungsten mainly exists as an octahedron.At the same time, LRS The experimental results also show that there is no Al_2 (WO_4) _3 in the sample of WO_3 / TiAl2O5 calcined at 550 ℃ .At the same time, the formation of Al_2 (WO_4) _3 was also studied.