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首页> 外文期刊>International Journal of Quantum Chemistry >Nb-Ta, Nb-Mo and Nb-V oxides prepared from hybrid organic-inorganic precursors
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Nb-Ta, Nb-Mo and Nb-V oxides prepared from hybrid organic-inorganic precursors

机译：由杂化有机-无机前体制备的Nb-Ta，Nb-Mo和Nb-V氧化物

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摘要

New hybrid organic-inorganic materials based on group 5 elements and a well-defined polymeric matrix have been prepared and used as precursors for Nb-Ta and Nb-Mo mixed oxides. In this non-conventional but easily accessible route to multimetallic oxides, a copolymer of N,N-diallyl-N-hexylamine and maleic acid was synthesised and used as matrix to stabilise inorganic species generated in solution from (NH4)(6)Mo7O24-4H(2)O, NH4VO3, (gu)(3)[Nb(O-2)(4)] and (gu)(3)[Ta(O-2)(4)]. Solid-state studies indicate that the homogeneity of the blends can be kept up to about 0.5 mol Nb-v and Ta-v and 0.25 mol V-v per mol of repeat units of the copolymer. The calcination conditions of these homogeneous hybrid precursors were optimised to produce Nb-Mo, Nb-Ta and Nb-V oxides. While the thermal treatment of the Nb-V hybrid blends led only to a mixture of different phases, the characterisation of the final phases by X-ray diffraction (XRD) proved the formation of pure Nb2MO3O14 and showed that Nb-Ta oxides could be synthesised as single phases corresponding to a continuous series of solid solutions. (c) 2007 Elsevier Inc. All rights reserved.
机译：基于第5组元素和定义明确的聚合物基体的新型杂化有机-无机材料已经制备，并用作Nb-Ta和Nb-Mo混合氧化物的前体。在这种非常规但易于获得的多金属氧化物合成方法中，合成了N，N-二烯丙基-N-己胺和马来酸的共聚物，并将其用作基质，以稳定从（NH4）（6）Mo7O24- 4H（2）O，NH 4 VO 3，（gu）（3）[Nb（O-2）（4）]和（gu）（3）[Ta（O-2）（4）]。固态研究表明，每摩尔共聚物的重复单元，共混物的均质性可保持在最高约0.5 mol Nb-v和Ta-v和0.25 mol V-v。优化了这些均质杂化前体的煅烧条件，以生产Nb-Mo，Nb-Ta和Nb-V氧化物。虽然Nb-V杂化混合物的热处理仅导致不同相的混合物，但通过X射线衍射（XRD）表征的最终相证明了纯Nb2MO3O14的形成，并表明可以合成Nb-Ta氧化物作为单相，对应于一系列连续的固溶体。 （c）2007 Elsevier Inc.保留所有权利。

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