A rotating inlet system was constructed in order to combine the rotating disc technique with on line mass spectrometry. The quantitative correlation between the Faradaic current by which a species is formed and the ion current at the detector of the mass spectrometer is used to calculate collection efficiencies on two different types of electrodes and for different types of reactions. On the basis of these results transport to and from and inside the porous catalyst layer is discussed.
A combination of mass spectrometry and cyclic voltammetry has proved a powerful tool for the simultaneous study of the structure changes and membrane properties of conducting polymers. The oxidized state of polypyrrole and the emeraldine structure of polyaniline, the two materials used in the study, are shown in the Figure.
Mit einer mobilen Chemiestation lässt sich eiweißhaltiger Abfall beim Gerben von Leder wieder verwerten. Lederhersteller senken so ihr Abfallaufkommen und sparen Energie. Für Chemiefirmen eröffnet sich gleichzeitig ein neues Geschäftsfeld: Statt Chemikalien zu verkaufen, ermöglichen sie den Kunden in Kooperation die eigene Produktion in kleinen Anlagen vor Ort.
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