A microcomputer-controlled system for automatic acquisition of kinetic data of gas uptake at constant pressure.
A microcomputer-controlled apparatus for measuring the kinetics of gas uptake in a chemical reaction at constant pressure and temperature is described. The slight pressure decrease caused by consumption of the gas is transformed into an electrical signal. A microprocessor stores the time at which the signal occurs and activates a motor-driven burette to restore the original pressure. At the end of the experiment, the data are recorded on magnetic tape by a cassette recorder and can be transferred from the tape to a desk computer for plotting or further mathematical treatment. The performance of the apparatus is illustrated by the example of the catalytic oxidation of benzoin in dimethyl sulphoxide.
Gampp
H
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Institute of Inorganic Chemistry, University of Basel, CH-4056 Basel, Switzerland.