Hülya AYKAÇ ÖZEN, Bahtiyar ÖZTÜRK

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

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

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.

Keywords:

Hydrogen, Metal Organic Framework, Mixed Matrix Membrane,

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