NİTROJENCE ZENGİN KOVALENT TRİAZİN KAFES POLİMERLERİNİN HİDROJEN DEPOLAMA KAPASİTELERİNİN İNCELENMESİ
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Tarih
2022-01
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info:eu-repo/semantics/openAccess
Özet
Kovalent triazin kafesler (KTK) yüksek nitrojen miktarları, termal kararlılıkları ve yüksek kimyasal stabilite özellikleri ile pratik uygulamalar için tercih edilen malzemelerdir. Böylelikle KTK’lar enerji depolama, hidrojen depolama, fotokatalitik sistemler ve pekçok uygulamada yüksek avantaj sağlar. Bu tezin amacı, sentezlenen yüzey alanı geniş nitrojence zengin KTK’ların hidrojen depolama seviyelerinin incelenmesidir. Sentezlenen KTK’ların yapısı BET (yüzey alanı ölçümü analizi), XRD (X ışını difraktometre) ve FT-IR (Fourier dönüşümlü kızılötesi spektroskopi) analizleriyle belirlenmiştir. Yapısı belirlenen KTK’ların yüzey alanları incelenmiş ve hangi koşullar altında (basınç, sıcaklık ve katalizör) hidrojen depolamanın maksimum seviyeye ulaştığı tespit edilmiştir. KTK’ların hidrojen depolama kapasitesinin en üst seviyeye çıktığı ortam koşulu 20 bar basınç altında DCP polimerinde gözlenmiştir. Sentezlenen numuneler arasında en düşük depolama miktarı DCBP polimerinde 1 bar basınç altında %1,27; en yüksek depolama miktarı ise DCP polimerinde 20 bar basınç altında %4,02 oranında ölçülmüştür. Bu deneysel çalışmalardan elde edilen veriler ışığında, sentezlenen kovalent triazin kafeslerin hidrojen depolama miktarları farklı basınçlar altında gösterilmiştir.
Covalent triazine frameworks (CTFs) are preferred materials due to their high nitrogen content, chemical stability, porous structure resulting suitable for practical applications. Thus, CTFs provide high advantages in applications such as energy storage, hydrogen storage, photocatalysis and heterogeneous photocatalysis. The aim of this thesis is to investigate the hydrogen storage levels of the synthesized nitrogen-rich CTFs. The structure of synthesized CTFs was determined by BET (Bruner Emmet Teller), XRD (X-ray difraction) and FT-IR (Fourier transform infrared spectroscopy) analyses. The ambient condition in which the hydrogen storage capacity of the CTFs reached the highest level was observed in DCP polymer under 20 bar pressure. Among the synthesized samples, the lowest storage amount was 1.27% under 1 bar pressure in DCBP polymer; the highest storage amount was measured at the rate of 4.02% under 20 bar pressure in DCP polymer. In the light of the data obtained from these experimental studies, the hydrogen storage amounts of the synthesized covalent triazine frameworks were shown under different pressures."
Covalent triazine frameworks (CTFs) are preferred materials due to their high nitrogen content, chemical stability, porous structure resulting suitable for practical applications. Thus, CTFs provide high advantages in applications such as energy storage, hydrogen storage, photocatalysis and heterogeneous photocatalysis. The aim of this thesis is to investigate the hydrogen storage levels of the synthesized nitrogen-rich CTFs. The structure of synthesized CTFs was determined by BET (Bruner Emmet Teller), XRD (X-ray difraction) and FT-IR (Fourier transform infrared spectroscopy) analyses. The ambient condition in which the hydrogen storage capacity of the CTFs reached the highest level was observed in DCP polymer under 20 bar pressure. Among the synthesized samples, the lowest storage amount was 1.27% under 1 bar pressure in DCBP polymer; the highest storage amount was measured at the rate of 4.02% under 20 bar pressure in DCP polymer. In the light of the data obtained from these experimental studies, the hydrogen storage amounts of the synthesized covalent triazine frameworks were shown under different pressures."
Açıklama
Anahtar Kelimeler
Kovalent triazin kafes, Polimer, Hidrojen depolama, Fiziksel adsorpsiyon., Covalent triazine frameworks, Polymer, Hydrogen storage, Physical adsorption.
