HETEROGENEOUS ALKOXYLATION USING ANION-BOUND METAL OXIDES

摘要

HETEROGENEOUS ALKOXYLATIONUSING ANION-BOUNDMETAL OXIDESABSTRACT OF THE DISCLOSUREActive-hydrogen compounds, for example,primary and secondary alcohols or diols, arealkoxylated, for example, ethoxylated, using solidanion-bound metal oxide catalysts such as zirconiumoxysulfate catalyst. Hydrous zirconium oxide istreated with solutions of sulfate, phosphate,nitrate or tetrafluoroborate and calcined in air at300°C to 950°C to produce highly activeheterogeneous alkoxylation catalysts. The amorphouscatalysts afford narrow molecular weight products.The catalyst can be removed from the product byfiltration and reused with no significant loss inactivity. Reaction temperatures of 50°C to 140°Care employed for alkoxylation.