Nb-Ta, Nb-Mo and Nb-V oxides prepared from hybrid organic-inorganic precursors
Nb-Ta, Nb-Mo and Nb-V oxides prepared from hybrid organic-inorganic precursors
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DOI：
10.1016/j.jssc.2007.05.008
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发表时间：
2007-07-01
影响因子：
3.3
通讯作者：
Devillers, M.
中科院分区：
文献类型：
--
作者：
Deligne, N.;Bayot, D.;Devillers, M.
基于第5族元素和定义明确的聚合物基体的新型有机-无机杂化材料已经制备并用作Nb-Ta和Nb-Mo混合氧化物的前体。在这种非常规但容易获得的多金属氧化物的路线中，合成了N，N-二烯丙基-N-己胺和马来酸的共聚物，并用作基质以稳定溶液中由（NH 4）（6）Mo 7 O24 - 4 H（2）O、NH 4VO 3、（gu）（3）[Nb（O-2）（4）]和（gu）（3）[Ta（O-2）（4）]产生的无机物种。固态研究表明，共混物的均匀性可以保持高达约0.5摩尔Nb-v和Ta-v和0.25摩尔V-v每摩尔的共聚物的重复单元。这些均匀的混合前体的煅烧条件进行了优化，以产生Nb-Mo，Nb-Ta和Nb-V氧化物。虽然Nb-V混合共混物的热处理仅导致不同相的混合物，但通过X射线衍射（XRD）对最终相的表征证明了纯Nb 2 MO 3 O 14的形成，并表明Nb-Ta氧化物可以合成为对应于连续系列固溶体的单相。(c)2007年爱思唯尔公司All rights reserved.
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.