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Preparation of Blue Vanadium‐Zircon Pigments by Aerosols Hydrolysis
Author(s) -
Tartaj Pedro,
Serna Carlos J.,
Ocaña Manuel
Publication year - 1995
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/j.1151-2916.1995.tb08461.x
Subject(s) - vanadium , zircon , materials science , zirconium , amorphous solid , pigment , hydrolysis , ceramic , infrared spectroscopy , mineralogy , matrix (chemical analysis) , chemical engineering , analytical chemistry (journal) , chemistry , chromatography , metallurgy , crystallography , geology , organic chemistry , composite material , paleontology , engineering
A continuous procedure for the preparation of V‐ZrSiO 4 powders based on the hydrolysis of liquid aerosols composed of a mixture of TEOS, zirconium propoxide, and VOCl 3 is reported. These powders consist of spherical amorphous particles, having a high degree of Si‐Zr mixing and a homogeneous distribution of vanadium in the ceramic matrix. The raw composition (Zr/Si ratio and V content) was systematically varied in order to optimize the color of the final pigments. The color changes produced in the samples during heating are discussed in terms of the location of the vanadium species in the zircon matrix. In vanadium‐zircon blue pigments, evidence of the substitution of Si by V +4 in tetrahedral sites forming a solid solution with the zircon matrix is observed by infrared spectroscopy.