Porous coordination polymer zeolitic frameworks

It is well known that porous zeolites show cation-exchange properties due to their anionic frameworks, while porous coordination polymers constructed from cationic metal ions and... 

The high thermal stability of zeolites and related micro-porous solids is one of their most attractive features. Whilst it Is clear that materials with organic components cannot withstand ultra-high temperatures, quite respectable compositional stability can be achieved. Thus the [Er(TMA)] polymer mentioned above shows no weight loss in its TGA curve before 550°C. However for porous solids another key issue is that of structural stability. Many open framework coordination polymers lose their crystalline structure upon mild heating, or even evacuation, through loss of guest molecules. 

In recent years, great attention has been given to the application of coordination polymers in the development of new porous materials to be applied in gas adsorption and other fields [226-236], Some authors consider that in comparison with usual porous materials, for example, zeolites and activated carbons, these materials are more promissory, as a consequence of the fact that their framework is designable and more flexible because of a diversity of coordination... 

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