Reaction of metakaolinite with phosgene and carbon tetrachloride

Zs Roder, I. Bertóti, T. Székely

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The chlorination and chloride volatilization process of a calcined disordered kaolin with phosgene and carbon tetrachloride was studied in the temperature range 300-1100 K mostly by thermogravimetry. The effects of heat treatment, temperature and time of the reaction and also morphological changes were investigated. Preferential chlorination of the aluminium content was observed. The rate of the reaction decreases with increasing silica content in the residue. For the initial period of the reaction, up to about 20% conversion, two markedly different reaction rates can be deduced with a local maximum at 1030 K. An immense increase in the specific surface area during the chlorination was observed, and is explained by the formation of new pores. On the basis of the observed morphological changes, it can be concluded that the reaction proceeds mainly in the inner surfaces of the grains with gradually opening micropores.

Original languageEnglish
Pages (from-to)113-125
Number of pages13
JournalReactivity of Solids
Volume3
Issue number1-2
DOIs
Publication statusPublished - 1987

Fingerprint

Phosgene
phosgene
tetrachlorides
Carbon tetrachloride
Carbon Tetrachloride
Chlorination
carbon tetrachloride
chlorination
Kaolin
Aluminum
Vaporization
Specific surface area
Silicon Dioxide
Reaction rates
vaporizing
Thermogravimetric analysis
Chlorides
thermogravimetry
Heat treatment
Silica

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Reaction of metakaolinite with phosgene and carbon tetrachloride. / Roder, Zs; Bertóti, I.; Székely, T.

In: Reactivity of Solids, Vol. 3, No. 1-2, 1987, p. 113-125.

Research output: Contribution to journalArticle

Roder, Zs ; Bertóti, I. ; Székely, T. / Reaction of metakaolinite with phosgene and carbon tetrachloride. In: Reactivity of Solids. 1987 ; Vol. 3, No. 1-2. pp. 113-125.
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