Collect. Czech. Chem. Commun. 1989, 54, 1514-1529

Measurements of specific copper surface area by a pulse chromatographic technique

Bohumír Dvořáka, Antonín Hudecb and Josef Pašeka

a Department of Organic Technology, Prague Institute of Chemical Technology, 166 28 Prague 6
b PRECIOSA, 466 67 Jablonec nad Nisou


The method for determination of specific copper area by decompositive adsorption of N2O has been investigated using pulse chromatographic technique. The reaction is accompanied by activated adsorption of oxygen. The amount of oxygen adsorbed depends linearly upon the temperature in the range of -20 to +90 °C. The existence of an oxygen monolayer in the temperature range from 90 to 120 °C has been proved. On the surface, the Cu:O ratio is equal to 2. The rate of decompositive N2O adsorption is very high. The weakly bonded oxygen can be desorbed at 100 °C into a stream of inert gas and the rate of oxygen desorption depends on the temperature of decompositive N2O adsorption. An improved procedure for measuring copper surface area by pulse chromatographic technique have been suggested.