Abstract: A device for the treatment and/or decontamination of surfaces has at least one generator configuration with which directed waves, in particular of an electromagnetic type, can be generated and its energy transmitted by a transmission device onto contaminated surface deposits, in particular surface deposits of a reactor pressure vessel and/or reactor internals. The surface deposits are dissolved and/or sublimated by the directed waves. In a corresponding method, the device is used to generate the directed waves and bring about transmissions of energy onto the contaminated surface deposits, in particular surface deposits of a reactor pressure vessel and/or reactor internals, in such a way that these surface deposits are dissolved and/or sublimated.

Abstract: The present invention relates to a process for carrying out olefin ring-closing metathesis (RCM) wherein compressed carbon dioxide (gaseous, liquid or supercritical) acts as solvent for the liquid or solid reactant and the products obtained therefrom, while additionally one or more ionic liquids are introduced as the 2nd phase in which homogeneous olefin metathesis catalysts are immobilised.