Herstellungsverfahren von Cycloalkadienen in einer Metathesereaktion und Metathesekatalysatoren

摘要

Process for the production of cycloalkadienes from cycloalkamonoenes, cyclopolyenes and/or acyclic polyenes in the liquid phase, comprises metathesis in the presence of supported catalyst (I) based on rhenium oxide/gamma-alumina (Re2O7/ gamma -Al2O3) having a pore volume of at least 0.6 cm<3>/g. An Independent claim is also included for a supported catalyst (I) comprising: (a) gamma -Al2O3 support, (b) 1-12 wt.% Re2O7, (c) 0-30 wt.% tin plus (d) 0.2-3 wt.% cesium and/or (e) 0.3-3 wt.% phosphorus.