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Updated: Apr 25, 2026

Chemical Precipitation Method for the Synthesis of Nb2O5 Modified Bulk Nickel Catalysts with High Specific Surface Area
Published on: February 19, 2018
Niobium oxyiodide clusters from heterogeneous solid-state reactions: the example of Li3Nb7O5I14(NbI6)
Jan Beitlberger1, Patrick Schmidt1, H-Jürgen Meyer1
1Section for Solid State and Theoretical Inorganic Chemistry, Institute of Inorganic Chemistry, Auf der Morgenstelle 18, Eberhard Karls Universität Tübingen, 72076 Tübingen, Germany. juergen.meyer@uni-tuebingen.de.
Abstract:
No fewer than nine niobium oxyiodide phases have been synthesised and characterised from the reaction between NbI4 and Li2O in the presence of Li2(CN2) under closed-system conditions at temperatures between 400 °C and 500 °C. Reactions in this system proceed through diffusion-controlled solid-solid pathways as well as gas-phase reactions that extend beyond equilibrium, which enables the concurrent formation of multiple niobium oxyiodide compounds. The crystal structures of these products display a range of architectures based on different niobium oxide clusters, including the [Nb7O5] core, which is a characteristic structural motif in the structure of Li3Nb7O5I14(NbI6), the compound examined in this report.
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