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Synthesis of cubic sodium tungsten bronze Na x WO 3 in air
Author(s) -
Li Xuhai,
Xie Ruishi,
Cao Xiuxia,
Liu Lixin,
Xu Liang,
Wang Yuan,
Meng Chuammin,
Wu Qiang
Publication year - 2018
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.15740
Subject(s) - tungsten , tungsten carbide , bronze , materials science , sodium , boron , cubic crystal system , inorganic chemistry , nuclear chemistry , crystallography , chemistry , metallurgy , organic chemistry
A solid‐state reaction route was used to synthesis cubic sodium tungsten bronze, Na x WO 3 . The Na x WO 3 crystals were successfully prepared through reducing Na 2 WO 4 with boron carbide (B 4 C) in air condition, followed by washing with hot‐water. The solid‐state reaction between Na 2 WO 4 and B 4 C occurred at 600‐700°C, and the insertion amount of sodium ion is as high as 0.82. The obtained Na x WO 3 crystals present an orange color, and the crystal size can grow to ~40 μm in just 20 minutes. The advantage of the method lies in the potential energy and cost savings over other conventional synthetic routes.