The University of Southampton
University of Southampton Institutional Repository

The effect of different precursors on the synthesis of ultramarine blue using a modified test furnace

The effect of different precursors on the synthesis of ultramarine blue using a modified test furnace
The effect of different precursors on the synthesis of ultramarine blue using a modified test furnace
The industrial pigment, ultramarine blue, has been prepared using a modified laboratory-scale test furnace. A study to investigate the reproducibility between runs of the test furnace, in terms of the colour properties of the products and impurities present in the products, has been performed using predensified precursor mix taken from an ultramarine plant. A second set of experiments was performed in single runs in the furnace to show the effect of different types of sulfur source and feldspar on the quality and colour of ultramarine blue produced. Colour measurements indicate that the ultramarine with the best colour properties is produced when sodium sulfide is used as the sulfur source in the starting mixture. Analyses of products washed with different alkali solutions show that while washing with potassium hydroxide improves the colour properties of the pigment, it is less effective than sodium hydroxide at removing impurities in the product. The structures of the ultramarine blue products have been investigated using the Rietveld refinement of powder X-ray diffraction data. A strong correlation between structural parameters and colour parameters has not been found.
raman
9780444518057
3059-3066
Elsevier
Kendrick, E.
558ba036-ba2a-406f-9fed-a47cadf3908d
Dann, S.E.
55ae7ba7-dfcd-4a5b-8329-5c957b7c006e
Hellgardt, K.
dcb2de36-a8f9-4f30-99a5-bcd934fd274f
Weller, M.T.
36a60b56-049f-466c-a1d7-39d6b0d85ff4
van Steen, E.
Callanan, L.H.
Claeys, M.
Kendrick, E.
558ba036-ba2a-406f-9fed-a47cadf3908d
Dann, S.E.
55ae7ba7-dfcd-4a5b-8329-5c957b7c006e
Hellgardt, K.
dcb2de36-a8f9-4f30-99a5-bcd934fd274f
Weller, M.T.
36a60b56-049f-466c-a1d7-39d6b0d85ff4
van Steen, E.
Callanan, L.H.
Claeys, M.

Kendrick, E., Dann, S.E., Hellgardt, K. and Weller, M.T. (2004) The effect of different precursors on the synthesis of ultramarine blue using a modified test furnace. van Steen, E., Callanan, L.H. and Claeys, M. (eds.) In Recent Advances in the Science and Technology of Zeolites and Related Materials, 154 (A,B,C): Proceedings of the 14th International Zeolite Conference, Cape Town, South Africa, 25-30th April 2004. Elsevier. pp. 3059-3066 .

Record type: Conference or Workshop Item (Paper)

Abstract

The industrial pigment, ultramarine blue, has been prepared using a modified laboratory-scale test furnace. A study to investigate the reproducibility between runs of the test furnace, in terms of the colour properties of the products and impurities present in the products, has been performed using predensified precursor mix taken from an ultramarine plant. A second set of experiments was performed in single runs in the furnace to show the effect of different types of sulfur source and feldspar on the quality and colour of ultramarine blue produced. Colour measurements indicate that the ultramarine with the best colour properties is produced when sodium sulfide is used as the sulfur source in the starting mixture. Analyses of products washed with different alkali solutions show that while washing with potassium hydroxide improves the colour properties of the pigment, it is less effective than sodium hydroxide at removing impurities in the product. The structures of the ultramarine blue products have been investigated using the Rietveld refinement of powder X-ray diffraction data. A strong correlation between structural parameters and colour parameters has not been found.

This record has no associated files available for download.

More information

Published date: December 2004
Venue - Dates: 14th International Zeolite Conference, Cape Town, South Africa, 2004-04-25 - 2004-04-30
Keywords: raman

Identifiers

Local EPrints ID: 20253
URI: http://eprints.soton.ac.uk/id/eprint/20253
ISBN: 9780444518057
PURE UUID: b7051fd6-0e8b-4ea5-b9cf-a53450deb9ee

Catalogue record

Date deposited: 20 Feb 2006
Last modified: 04 Jan 2024 04:25

Export record

Contributors

Author: E. Kendrick
Author: S.E. Dann
Author: K. Hellgardt
Author: M.T. Weller
Editor: E. van Steen
Editor: L.H. Callanan
Editor: M. Claeys

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×