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Vaporization of Silica in Steam Atmosphere
Author(s) -
CHENG MINGCHU,
CUTLER IVAN B.
Publication year - 1979
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1979.tb12739.x
Subject(s) - vaporization , activation energy , atmosphere (unit) , steam pressure , materials science , reaction rate , chemistry , weight change , analytical chemistry (journal) , mineralogy , thermodynamics , catalysis , weight loss , boiler (water heating) , chromatography , organic chemistry , physics , medicine , obesity
The effect of temperature and steam pressure on the vaporization and corrosion of silica was studied by measuring weight loss as a function of time. The reaction rate increased exponentially with temperature up to 1200°, with a maximum rate of reaction at ∼1350°C. Above this temperature the rate abruptly decreased with increasing temperature. The pressure dependence of the reaction was approximately linear. The activation energy was ∼25 kcal/mol for the reaction at 0.84 and 14.5 atm steam.