Challenges and Future Work

The construction of PCMRs with electrodes and current connectors is very complicated. 

The protonic conductivity of the currently developed ceramic conductors is not sufficiently high and thus considerably high temperatures are required to raise it. 

In order to improve the conductivity and reduce the operating temperature it is necessary to make thin ceramic films, but to prepare thin and dense films on a porous support is technologically challenging. 

The operating temperature is too high for most organic reactions. 

In fact, all the challenges faced by dense ceramic oxygen-permeable membrane reactors as described in Chapter 5 have to be faced by PCMRs. Searching for better membrane materials, developing effective membrane synthesis methods, and improving chemical and structural stability of the current membrane materials will be the focus of active 

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