THE chromatographic separation of argon and oxygen is difficult, and existing methods depend on one of the following techniques: (1) Separation on a molecular sieve 5 Å column at 18° C (ref.

Molecular Sieves The zeolite minerals, whose crystals contain a myriad of minute pores, have made possible a new branch of chemical technology. They can perform precise separations of very similar ...

MOFs have stable structures with accessible pores and large surface areas, so they show great promise as molecular sieves and sponges for small organic molecules or gases. To date, most MOFs have ...

In an article published in the journal Angewandte Chemie International Edition, chemists from Heinrich Heine University Düsseldorf (HHU) present an innovative molecular sieve made of partially ...

Molecular sieve membranes provide an energy-saving and effective solution for the separation process. Metal-organic frameworks (MOFs) are ideal candidates for these membranes. However, the "gate ...