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So far, large scale industrial separations with inorganic membranes and catalytic membrane reactors in process intensification do not exist. Two prominent developments which are near to a commercialization are discussed: perovskite membranes for oxygen separation and zeolite membranes for molecular sieving.

6.0 The spinning process adopted from preparing polymer hollow fibre membranes can be successfully applied to the manufacturing of perovskite hollow fibres with infinite O2-selectivity, relative high fluxes and sufficient durability at 850°C. The technique of supported thin membrane films could be transferred to the crystallization of zeolite molecular sieve layers. 5.5 5.0 Temperature (°C) Fig. 4. O2 permeation through a Ba(Co,Fe,Zr)O3-d hollow fibre membrane using He as sweep.