Acetaldehyde removal from methyl acetate by distillation at elevated pressure

Method for obtaining oligomers of polytetrahydofurane or tetrahydrofurane

Method for avoiding corrosion

Method for the continuous purification by distillation of the solvent methanol, used in the synthesis of propylene oxide

Method of cleaning industrial gases

Method and apparatus for treating oxygenate-containing feeds and their use in conversion of oxygenates to olefins