Chlorination of titanias modified by alkali and/or phosphorus additives. I. Kinetics of the chlorination

G. Mink, I. S. Pap, I. Bertóti, T. Székely, E. Karmazsin, A. Dassler

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The kinetics of the chlorination of titania modified by alkali and/or phosphorous additives, were studied by thermogravimetric methods using COCl2 and gaseous CCl4 as chlorinating agents. The chlorination of pure titania was compared with that of phosphorous-containing compounds, TiO2 · nP2O5 and K3P3O9 were also investigated. Apparent activation energies and reaction orders were calculated from the dependence of the initial rates on temperature and partial pressure. With COCl2 as chlorinating agent and increased alkali content of the samples resulted in an increase in the reaction rate, whereas the phosphorous additive behaved as a retardant, and their inhibiting effects became more and more pronounced in the course of the reaction. On the other hand when chlorinating with CCl4, high amounts of K or Na additives retarded the reaction, and Li enhanced the chlorination.

Original languageEnglish
Pages (from-to)321-333
Number of pages13
JournalReactivity of Solids
Volume6
Issue number4
DOIs
Publication statusPublished - 1989

Fingerprint

chlorination
Chlorination
Alkalies
Phosphorus
phosphorus
alkalies
Kinetics
kinetics
retardants
titanium
Titanium
Partial pressure
Reaction rates
partial pressure
reaction kinetics
Activation energy
Chemical activation
activation energy
Temperature
temperature

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Chlorination of titanias modified by alkali and/or phosphorus additives. I. Kinetics of the chlorination. / Mink, G.; Pap, I. S.; Bertóti, I.; Székely, T.; Karmazsin, E.; Dassler, A.

In: Reactivity of Solids, Vol. 6, No. 4, 1989, p. 321-333.

Research output: Contribution to journalArticle

Mink, G. ; Pap, I. S. ; Bertóti, I. ; Székely, T. ; Karmazsin, E. ; Dassler, A. / Chlorination of titanias modified by alkali and/or phosphorus additives. I. Kinetics of the chlorination. In: Reactivity of Solids. 1989 ; Vol. 6, No. 4. pp. 321-333.
@article{096f95a4a7aa4eb5980a7bcc892481bb,
title = "Chlorination of titanias modified by alkali and/or phosphorus additives. I. Kinetics of the chlorination",
abstract = "The kinetics of the chlorination of titania modified by alkali and/or phosphorous additives, were studied by thermogravimetric methods using COCl2 and gaseous CCl4 as chlorinating agents. The chlorination of pure titania was compared with that of phosphorous-containing compounds, TiO2 · nP2O5 and K3P3O9 were also investigated. Apparent activation energies and reaction orders were calculated from the dependence of the initial rates on temperature and partial pressure. With COCl2 as chlorinating agent and increased alkali content of the samples resulted in an increase in the reaction rate, whereas the phosphorous additive behaved as a retardant, and their inhibiting effects became more and more pronounced in the course of the reaction. On the other hand when chlorinating with CCl4, high amounts of K or Na additives retarded the reaction, and Li enhanced the chlorination.",
author = "G. Mink and Pap, {I. S.} and I. Bert{\'o}ti and T. Sz{\'e}kely and E. Karmazsin and A. Dassler",
year = "1989",
doi = "10.1016/0168-7336(89)80071-3",
language = "English",
volume = "6",
pages = "321--333",
journal = "Solid State Ionics",
issn = "0167-2738",
publisher = "Elsevier",
number = "4",

}

TY - JOUR

T1 - Chlorination of titanias modified by alkali and/or phosphorus additives. I. Kinetics of the chlorination

AU - Mink, G.

AU - Pap, I. S.

AU - Bertóti, I.

AU - Székely, T.

AU - Karmazsin, E.

AU - Dassler, A.

PY - 1989

Y1 - 1989

N2 - The kinetics of the chlorination of titania modified by alkali and/or phosphorous additives, were studied by thermogravimetric methods using COCl2 and gaseous CCl4 as chlorinating agents. The chlorination of pure titania was compared with that of phosphorous-containing compounds, TiO2 · nP2O5 and K3P3O9 were also investigated. Apparent activation energies and reaction orders were calculated from the dependence of the initial rates on temperature and partial pressure. With COCl2 as chlorinating agent and increased alkali content of the samples resulted in an increase in the reaction rate, whereas the phosphorous additive behaved as a retardant, and their inhibiting effects became more and more pronounced in the course of the reaction. On the other hand when chlorinating with CCl4, high amounts of K or Na additives retarded the reaction, and Li enhanced the chlorination.

AB - The kinetics of the chlorination of titania modified by alkali and/or phosphorous additives, were studied by thermogravimetric methods using COCl2 and gaseous CCl4 as chlorinating agents. The chlorination of pure titania was compared with that of phosphorous-containing compounds, TiO2 · nP2O5 and K3P3O9 were also investigated. Apparent activation energies and reaction orders were calculated from the dependence of the initial rates on temperature and partial pressure. With COCl2 as chlorinating agent and increased alkali content of the samples resulted in an increase in the reaction rate, whereas the phosphorous additive behaved as a retardant, and their inhibiting effects became more and more pronounced in the course of the reaction. On the other hand when chlorinating with CCl4, high amounts of K or Na additives retarded the reaction, and Li enhanced the chlorination.

UR - http://www.scopus.com/inward/record.url?scp=0024610697&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0024610697&partnerID=8YFLogxK

U2 - 10.1016/0168-7336(89)80071-3

DO - 10.1016/0168-7336(89)80071-3

M3 - Article

VL - 6

SP - 321

EP - 333

JO - Solid State Ionics

JF - Solid State Ionics

SN - 0167-2738

IS - 4

ER -