On the role of potassium additives in the chlorination of TiO2 by CCl4 and COCl2

G. Mink, I. Bertóti, I. S. Pap, M. Mohai, T. Székely, Tran Minh Duc

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The role of potassium present on the surface or even built into the bulk has been studied in the chlorination of titanias by CCl4 and COCl4 to volatile TiCl4. The solids to be chlorinated were characterized by atomic absorption spectroscopy (AAS) and X-ray induced photoelectron spectroscopy (XPS) and the kinetics of the reaction was followed by thermogravimetry (TG). In case of COCl2 a catalytic effect of potassium was observed whereas, when chlorinating with CCl4, potassium additives resulted in a strong retardation of the reaction. The results are interpreted in terms of the electronic structure of the solid surfaces and the different polarizability of the reactants.

Original languageEnglish
Pages (from-to)133-135
Number of pages3
JournalVacuum
Volume37
Issue number1-2
DOIs
Publication statusPublished - 1987

Fingerprint

chlorination
Chlorination
Potassium
potassium
Atomic spectroscopy
Photoelectron spectroscopy
thermogravimetry
Absorption spectroscopy
solid surfaces
Electronic structure
Thermogravimetric analysis
absorption spectroscopy
photoelectron spectroscopy
electronic structure
X rays
Kinetics
kinetics
x rays

ASJC Scopus subject areas

  • Surfaces, Coatings and Films
  • Condensed Matter Physics
  • Surfaces and Interfaces

Cite this

On the role of potassium additives in the chlorination of TiO2 by CCl4 and COCl2. / Mink, G.; Bertóti, I.; Pap, I. S.; Mohai, M.; Székely, T.; Minh Duc, Tran.

In: Vacuum, Vol. 37, No. 1-2, 1987, p. 133-135.

Research output: Contribution to journalArticle

Mink, G. ; Bertóti, I. ; Pap, I. S. ; Mohai, M. ; Székely, T. ; Minh Duc, Tran. / On the role of potassium additives in the chlorination of TiO2 by CCl4 and COCl2. In: Vacuum. 1987 ; Vol. 37, No. 1-2. pp. 133-135.
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AU - Minh Duc, Tran

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