Controllable Preparation Of Porous Coordination Polymer And Its Application In Catalysis And Energy Storage

The investigation in this thesis is composed of the development of new functionalized metal-organic frameworks(MOFs)materials and organic-inorganic composites materials.The studies of the above mentioned classes of materials were used as catalyst and as support for shape-stabilized phase change materials(PCMs)for energy storage.A brief background to catalysis and thermal energy storage(TES)are introducing,and then a description of the solid porous materials with their applications in particular their ability to use as catalysts and as support materials.Efficient alkylsulfonate functionalized amino-MOFs,MIL-101-Cr-NH-RSO3H,has been developed by post-synthetic modification method with 1,3-propanesultone reagent.The solid MIL-101-Cr-NH-RSO3H catalyst exhibited high catalytic performance in the preparation of quinoxaline derivatives by the condensation of benzene-1,2-diamines with 1,2-dicarbonyl compounds.Catalytic behavior of bifunctional MOFs MIL-101-Cr-NH-RNH2 was investigated.The MIL-101-Cr-NH-RNH2 catalyst shows very good bifunctional catalytic activity towards Knoevenagel condensation involving dihydrocoumarin,via condensation of salicylaldehyde with activated methylene compounds malonitrile,in water under heterogeneous conditions.An organic-inorganic hybrid porous metal-organic gels(MOGs)based on chromium and bridging benzene-1,3,5-tricarboxylic acid(BTC)was synthesized.The porosity of the MOG-100(Cr)guaranteed an excellent thermal stability of the encapsulated stearic acid(SA).No leakage of PCMs was observed from the MOGs even after heating the SA@MOG-100(Cr)composites beyond their melting point.A maximum weight percentage as high as 90%of SAhas been achieved without leakage.A series of 1,3,5-benzenetricarbonyl trichloride cross-linked organic polymer was prepared by condensation with benzene-1,4-diamine,4,4'-methylenediamine and 1,3,5-triazine-2,4,6-triamine respectively.Greatly beneficial,the as-synthesized polymers are non-corrosive,environment friendly;possess high thermal stabilities and permanent porosity which provided an excellent scaffold to prevent leakage of melted PCMs.PEG 2000 used as PCMs could be encapsulated up to 85 wt%in PTP-A polymer materials and these composites were defined as form-stable composite PCMs without the leakage of melted PCM.The PTP-A composite can be used as a potential material to store thermal energy in practical application and the composite materials exhibited excellent recyclability after 50 thermal cycles.