Zeolite membranes: Functionalizing of properties by tailored compositions

Membrane separation is a technology of low energy consumption. Membranes made of zeolites are of great interest because of its fixed and open pores in the size of small molecules inside of crystalline structures allowing separation processes under harsh conditions. While zeolite NaA (LTA-type) is industrial used for dewatering of organic solvents the pore size its thermal and hydrothermal stability can by tuned by exchange of framework and extra-framework elements. SOD with pores of only 0.28nm is of great interest for H2- und H2O-separation and also can by tuned by ion exchange. Zeolites opens the opportunity to create membranes of adapted separation behavior for small molecules in conditions of surrounding technical processes.