Synthesis and Characterization of Vanadium Substituted Potassium Tungsten Bronzes, K<sub>x</sub>V<sub>y</sub>W<sub>1-y</sub>O<sub>3</sub>

Authors

  • A. M. Abdullah BCSIR
  • T. Debnath University of Dhaka
  • C. H. Rüscher Leibniz University of Hannover
  • A. Hussain University of Dhaka

DOI:

https://doi.org/10.3329/jsr.v4i2.9349

Keywords:

Tungsten bronzes, Vanadium substituted bronze, Bronzoids

Abstract

A series of vanadium substituted potassium hexagonal tungsten bronzes KxVyW1-yO3 (K-HTB) were prepared by conventional solid state method at 800 °C with compositions of x = 0.30 and 0.00 ? y ? 0.15. A mixture of K-HTB and non bronze phases with y ? 0.20 was observed. The proportion of this non bronze phase increases with increasing vanadium content. The non bronze phases in the mixture could not be indexed yet. In contrast, a very small amount of vanadium can be substituted in potassium tetragonal tungsten bronzes (K-TTB) at 800 °C with x = 0.50 and 0.00 ? y ? 0.02, however at 700 °C vanadium substituted K-TTB can be prepared with 0.00 ? y ? 0.05. Further substitution of vanadium in K-TTB decomposes to K-HTB and non-bronze phases.


Keywords: Tungsten bronzes; Vanadium substituted bronze; Bronzoids.

 

© 2012 JSR Publications. ISSN: 2070-0237 (Print); 2070-0245 (Online). All rights reserved.

 

doi: http://dx.doi.org/10.3329/jsr.v4i2.9349 J. Sci. Res. 4 (2), 507-514 (2012)

 

Downloads

Download data is not yet available.
Abstract
867
PDF
823

Author Biographies

A. M. Abdullah, BCSIR

BCSIR Laboratories, 4220 Chittagong, Bangladesh

 

T. Debnath, University of Dhaka

Department of Chemistry

Assistant Professor

C. H. Rüscher, Leibniz University of Hannover

Institute of Mineralogy

Professor

Downloads

Published

2012-04-27

How to Cite

Abdullah, A. M., Debnath, T., Rüscher, C. H., & Hussain, A. (2012). Synthesis and Characterization of Vanadium Substituted Potassium Tungsten Bronzes, K<sub>x</sub>V<sub>y</sub>W<sub>1-y</sub>O<sub>3</sub>. Journal of Scientific Research, 4(2), 507. https://doi.org/10.3329/jsr.v4i2.9349

Issue

Section

Section B: Chemical and Biological Sciences