Kinetics of Anatase TiO<sub>2</sub> Surface Area Reduction in a Mixture of HCI, H<sub>2</sub>O, and O<sub>2</sub>: l, Experimental Study - Mines Saint-Étienne
Journal Articles Journal of the American Ceramic Society Year : 1992

Kinetics of Anatase TiO2 Surface Area Reduction in a Mixture of HCI, H2O, and O2: l, Experimental Study

Abstract

Changes in the surface area of anatase TiO2 were investigated at 690 K as a function of the gas composition in mixtures of hydrogen chloride, water vapor, and oxygen. The chlorine content on the catalyst support was not dependent on the annealing time, which indicates that the adsorption equilibrium is reached very quickly. The kinetics of surface area were obtained as a function of partial pressure of HCI (from 0.1 to 40 kPa), water vapor (from 0.05 to 10 kPa), and oxygen (from 0.4 to 20 kPa). A mathematical expression for the rate of surface area loss was obtained which includes the partial pressure of water and the chlorine content at the surface of anatase

Dates and versions

emse-00612867 , version 1 (01-08-2011)

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Frédéric Gruy, Michèle Pijolat. Kinetics of Anatase TiO2 Surface Area Reduction in a Mixture of HCI, H2O, and O2: l, Experimental Study. Journal of the American Ceramic Society, 1992, 75 (3), pp.657-662. ⟨10.1111/j.1151-2916.1992.tb07855.x⟩. ⟨emse-00612867⟩
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