Banu ÖZTÜRK, D. Ali KÖSE, Zeynel ÖZTÜRK, Abdurrahman ASAN

BAZI METAL ORGANİK KAFES YAPILI BİLEŞİKLERİN HİDROJEN DEPOLAMA PERFORMANSLARININ İNCELENMESİ

Hidrojenin bilinen depolama sistemlerinden farklı olarak depolama ortamlarında kimyasal olarak veya zayıf van der Waals etkileşimleriyle fiziksel olarak tutunabildiği bilinmektedir. Hidrojen, fiziksel adsorpsiyonla karbon nanotüplerde, zeolitlerde veya bunlardan çok daha yüksek yüzey alanına sahip Metal Organik Kafes (Metal Organic Framework; MOF)lerde depolanabilmektedir. Bu çalışmada, hidrojen enerjisi depolama sistemi zayıf yönünün iyileştirilmesi için karışık ligandlıorganometalik trans-Diaquabis (nikotinamid-κN)bis(salisilato- κO)kobalt(II), trans-Diaquabis (3-hidroksibenzoato-κO1 )bis(nikotinamid-κN1 ) bakır(II), (p-brombenzoato) bis(N,N-dietilnikotinamid) kobalt(II) kompleksleri (sırasıyla A1, A2, A3) sentezlenmiş, TG, FT-IR, X-Ray ve Elementel analizlerle karakterize edilmiş, adsorpsiyon analiziyle hidrojen depolama performansları belirlenmiştir. Sentezlenen komplekslerin (A1, A2, A3) 90 bar basınç ve 77°K sıcaklıkta yapılan ölçümler sonucu hidrojen depolama miktarları sırasıyla kütlece % 2,59, %2,63 ve %3,22 oldukları belirlenmiştir.

INVESTIGATION OF HYDROGEN STORAGE PERFORMANCES OF SOME METAL ORGANİC FRAMEWORK STRUCTURED COMPOUNDS

Unlike other known storage systems, it is known that, hydrogen is capable of being absorbed in some storage media physically by means of weak Van der Waals interaction or by chemically. Hydrogen can be stored in carbonnanotubes or in zeolites through physical absorption, or it can be stored in Metal OrganicFrameworks (MOFs) which have higher surface area. In this study, in order for the solution of the weak aspect of hydrogen energy system, mixed ligand organometallic trans-Diaquabis (nicotinamide-κN) bis(salicylato-κO) cobalt(II), trans-Diaquabis (3-hidroxybenzoato-κO1) bis(nicotinamide-κN1) cupper(II), (p-brominbenzoato) bis(N,Ndiethylnicotinamid) cobalt(II) (A1, A2, A3 respectively) complexes are systeszed, then charactarized by TG, FTIR, X-Ray and elementel analysis, hydrogen storage performances are determined by adsorption. At the end of measurements it is found out that the synthesized compounds at 77K and under 90 bars pressure can store hydrogen wt% 2,59, 2,63 and 3,22 respectively.

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