Angewandte Chemie International Edition

Cover image for Vol. 55 Issue 31

Editor: Peter Gölitz, Deputy Editors: Neville Compton, Haymo Ross

Online ISSN: 1521-3773

Associated Title(s): Angewandte Chemie, Chemistry - A European Journal, Chemistry – An Asian Journal, ChemistryOpen, ChemPlusChem, Zeitschrift für Chemie

Cover Picture (Angew. Chem. Int. Ed. Engl. 6/1991)

30_06/1991The Cover picture shows schematically the possibility of characterizing reactions at high pressure (flange) and high temperatures (red heat) spectroscopically. In the center of the picture are a series NIR spectra which were recorded during the polymerization of ethylene (E) to polyethylene (PE) at 463 K and 2630 bar. In this way the percentage conversion of the polymerization can be monitored directly. More about quantitative absorption spectroscopy in the IR and UV regions at pressures up to 7 kbr and temperatures up to 900 K is reported by M. Buback on p. 641.

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