Metal Katkılı MOF-5 İçeren Karışık Matriksli Membranlar İle Hidrojen Geçirgenliğinin İyileştirilmesi

Öz

Hidrojen, yüksek enerji yoğunluğu ve çevreye zarar vermeyen özellikleri ile geleceğin enerji taşıyıcısı olarak görülmektedir. Doğada saf halde bulunmayan hidrojen, gaz karışımından çeşitli tekniklerle ayrılabilmektedir.  Bu ayırma prosesleri içerisinde yer alan membran teknolojisi, enerji verimliliği ve mekanik dayanıklılığı sayesinde son yıllarda dikkati üzerine çekmiştir. Membran teknolojileri içinde yer alan ve membran içerisine dolgu maddesi ilavesiyle oluşturulan karışık matriksli membranlar (MMM) ile gaz ayırma özelliklerinin iyileştirildiği görülmüştür. Karışık matriksli membranlarda dolgu maddesi olarak kullanılan MOF yapıları da yüksek yüzey alanları ve gözenek hacimlerinden dolayı tercih edilmekte ve gaz geçirgenliğine olumlu etki yapmaktadır. Bu çalışmada, iki farklı metal kullanarak NiCoMOF-5 yapısı sentezlenmiştir. Karışık matriksli membran hazırlamak üzere poliimit membrana NiCoMOF-5 ilave edilmiştir. Oluşturulan yapılar çeşitli karakterizasyon işlemlerine tabi tutulmuştur. Sonuçlar, karışık matriksli membranın başarılı bir şekilde sentezlendiğini ve MOF ilave edilen poliimit membranın saf poliimide göre gaz geçirgenlik performansını arttırdığını göstermiştir

Anahtar Kelimeler

• Hidrojen,Metal Organik Kafes,Karışık Matriksli Membran

Improvement of Hydrogen Permeability with Mixed Matrix Membranes Containing Metal Doped MOF-5

Öz

Hydrogen is seen as the energy carrier of the future with its high energy density and envrironmental friendly properties. Since hydrogen is not pure in nature, it can be separated from the gas mixture by various techniques. Membrane technology involved in hydrogen separation processes has attracted attention in recent years thanks to its energy efficiency and mechanical strength. It has been found that the mixed matrix membranes formed by the addition of the filler material inside the membrane technology improve the gas separation properties. MOF structures used as a filler material are also preferred due to their high surface area and pore volume and have a positive effect on gas permeability. In this work, NiCoMOF-5 structure was synthesized using two different metals. Then, NiCoMOF-5 was added into polyimide membrane to prepare a mixed matrix membrane. The obtained MOF and MMM structures were evaluated various characterization procedures. The results show that the mixed matrix membrane is successfully synthesized and that the MOF added polyimide membrane improves the gas permeability performance relative to the pure polyimide.

Anahtar Kelimeler

• Hydrogen,Metal Organic Framework,Mixed Matrix Membrane

Kaynakça

1. [1] Dincer I., "Technical, environmental and exergetic aspects of hydrogen energy systems" International Journal of Hydrogen Energy, 27, 265-285. 2002.
2. [2] Jain I.P., "Hydrogen the fuel for 21st century" International Journal of Hydrogen Energy, 34, 7368-7378,2009.
3. [3] Züttel A., "Materials for hydrogen storage" Materials Today, 6, 24-33, 2003.
4. [4] Berg A.W.C. and Arean C.O., "Materials for hydrogen storage: current research trends and perspectives" Chemical Communications, 6, 668-681, 2008
5. [5] Adhikari S. and Fernando S.,"Hydrogen Membrane Separation Techniques" Industrial & Engineering Chemistry Research, 45, 875-881, 2006.
6. [6] Arjmandi M. and Pakizeh M., "Mixed matrix membranes incorporated with cubic-MOF-5 for improved polyetherimide gas separation membranes: Theory and experiment" Journal of Industrial and Engineering Chemistry, 20, 3857-3868, 2014.
7. [7] Perez E.V., Balkus J., Ferraris J.P., Musselman I.H., "Mixed-matrix membranes containing MOF-5 for gas separations" Journal of Membrane Science, 328, 165-173. 2009.
8. [8] Li J., Cheng S., Zhao Q., Long P., Dong J., "Synthesis and hydrogen-storage behavior of metal–organic framework MOF-5" International Journal of Hydrogen Energy, 34, 1377-1382, 2009.

9. [9] Li, H., Shi W., Zhao K., Li H., Bing Y., Cheng P., "Enhanced Hydrostability in Ni-Doped MOF-5" Inorganic Chemistry, 2012. 519200-9207.
10. [10] Yang, J.-M., Q. Liu, and W.-Y. Sun, Co(II)-doped MOF-5 nano/microcrystals: Solvatochromic behaviour, sensing solvent molecules and gas sorption property. Journal of Solid State Chemistry, 2014. 218: p. 50-55.
11. [11] Yang, J.-M., Q. Liu, and W.-Y. Sun, Shape and size control and gas adsorption of Ni(II)-doped MOF-5 nano/microcrystals. Microporous and Mesoporous Materials, 2014. 190(Supplement C): p. 26-31.
12. [12] Ozturk, B. and F. Demirciyeva, Comparison of biogas upgrading performances of different mixed matrix membranes. Chemical Engineering Journal, 2013. 222: p. 209-217.
13. [13] Huang, L., et al., Synthesis, morphology control, and properties of porous metal–organic coordination polymers. Microporous and Mesoporous Materials, 2003. 58(2): p. 105-114.
14. [14] Sabouni, R., H. Kazemian, and S. Rohani, A novel combined manufacturing technique for rapid production of IRMOF-1 using ultrasound and microwave energies. Chemical Engineering Journal, 2010. 165(3): p. 966-973.
15. [15] Weng, T.H., H.H. Tseng, and M.Y. Wey, Fabrication and characterization of poly(phenylene oxide)/SBA-15/carbon molecule sieve multilayer mixed matrix membrane for gas separation. International Journal of Hydrogen Energy, 2010. 35(13): p. 6971-6983.