Two mixed-valence lacunary tungstodiphosphates with the lacuna located in "belt" and "cap" positions were photosynthesized.
用光合成的方法得到了两个混合价的缺位磷钨杂多化合物,其缺位分别位于“带”和“帽”的位置。
2
By using XPS, before and after the intoxication of mixed oxide catalysts, the various appearance and the composition. valence and chemical mechanism of the active component of catalysts were studied.