The separation of gaseous hydrocarbon isomers by thermal diffusion has been demonstrated. Experiments were made in a Clusius column and mixtures analyzed by a mass spectrometer. Binary mixtures of ...

A membrane that separates organic solvent molecules based on their shape and size could dramatically cut costs associated with preparing valuable polymer feedstocks, such as p-xylene. It works as part ...

Zeolites are microporous mineral materials that have found wide use in industry since the late 1950s, with one of their most important applications being chemical catalysis. They are particularly ...