Fe/KIT-6 Katalizörlerinin Sentezi, Karakterizasyonu ve H2O2 Bozunma Reaksiyonunda Aktivitelerinin İncelenmesi

Year 2021, , 442 - 448, 30.04.2021

Gamze Gündüz Meriç

https://doi.org/10.35414/akufemubid.865113

Cited By: 1

Abstract

Demir (Fe) katkılı la3d yapısındaki kübik büyük mezogözenekli silika KIT-6 sentezi, doğrudan yapı ajanı olan triblok kopolimer Pluronic 123 (P123) ve katkı maddesi olarak da n-butanol kullanılarak hidrotermal sentez yöntemiyle gerçekleştirilmiştir. Fe eklenmesinin KIT-6 nanomateryalinin asitliği üzerindeki etkisi araştırılarak farklı oranlarda Fe (% 5, 10, 20 ve boş) yüklenen malzemeler karşılaştırılmıştır. Fe yüklü KIT-6 katalizörleri N2 adsorpsiyon-desorpsiyon, SEM, TEM, XRD ve FT-IR analizleri ile karakterize edilmişlerdir. Sonuçlar Fe’nin KIT-6 yapısına iyi bir şekilde dahil olduğunu ve gözenek yapısının da korunduğunu göstermiştir. Fe varlığı güçlü asit bölgeleri oluşturduğu için katalitik aktiviteyi de arttırmıştır. Ilıman koşullar altında (oda sıcaklığı, atmosferik basınç) Fe yüklü KIT-6’ların H2O2 bozunma reaksiyonu için etkili, geri dönüştürülebilir ve temiz katalizörler oldukları görülmüştür.

Keywords

KIT-6, demir (Fe), mezogözenek, H2O2 bozunması, çevre dostu

Synthesis, Characterization of Fe/KIT-6 and Investigation of Their Activities at Decomposition of H2O2 Reaction

Abstract

Iron into the ordered cubic pores of Ia3d mesoporous silica, KIT-6, was performed by a hydrothermal method and utilizing a versatile structure directing agent, Pluronic P123 triblock copolymer, in n-butanol as co solvent. The effect of iron on the acidity of KIT-6 nanomaterial was investigated and materials loaded with Fe in different proportions (5%, 10%, 20% and blank) were compared. The prepared mesoporous Fe/KIT-6 was characterized by N2 adsoption-desorption, SEM, TEM, XRD and FT-IR analyses. Results displayed that iron ions were well incorporated into the KIT-6 framework and the entire ordered pore structure has been retained. Iron enhanced the catalytic activity of KIT-6 as strong acid sites. The Fe/KIT-6 was used as an effective, recyclable and green catalyst for decomposition of H2O2 under mild conditions (at room temperature, atmospheric pressure).

Keywords

KIT-6, Iron (Fe), mesoporous, H2O2 decomposition, environmentally friendly

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