A thermogravimetric analyser for corrosive atmospheres and its application to the chlorination of ZrO2-C mixtures

D. PASQUEVICH; A. CANEIRO

THERMOCHIMICA ACTA

ELSEVIER SCIENCE BV

Lugar: Amsterdam; Año: 1989 vol. 156 p. 275 - 283

0040-6031

We report on a thermogravimetric analyser, built on the basis of a Cahn 2000 electrobalance, suitable for using with corrosive atmospheres. We discuss the corrections for buoyancy and gas flow effects, which strongly modify thermogravimetric curves. p]As an application, we studied the kinetics of a reaction between Cl2 and a mixture of ZrO2 and C. We were able to measure the uptake of Cl2 by C and the reaction rate within the first 50 s. We present evidence of a transition to quite a different reaction rate at longer times.