Preparation and Characterization of Pvp Stabilized Rhodium Iron Bimetallic Nanoclusters and Investigation of Catalytic Activity in DMAB Hydrolysis

Öz

Rh-Fe nanoparticles (Rh-Fe@PVP) stabilized with poly(N-vinyl-2-pyrrolidone) (PVP) were synthesized by alcohol reduction technique, which is an efficient and environmentally friendly method. The synthesized nanoparticles were characterized by SEM, SEM/EDX, UV/Vis techniques. The prepared nanoparticles were used as a catalyst in the production of hydrogen from the hydrolysis reaction of dimethylamine-borane, a boron-nitrogen (B-N) derivative, which stands out due to its advantages such as high hydrogen content, stability and environmental friendliness. Bimetallic nanoparticles, which were calculated as TOF value (54.24 1/min) and activation energy (49.9 kJ/mol), were evaluated as an efficient catalytic system with these properties. As a result of investigating the effects of catalyst and substrate concentrations on the catalytic reaction, the rate expression of the reaction; It was determined that it progressed from 0.4 order according to the catalyst concentration and 0.3 order according to the substrate concentration.

Anahtar Kelimeler

• Energy
• Hydrogen
• Catalyst
• PVP
• DMAB

Pvp ile Kararlaştırılmış Rodyum Demir Bimetalik Nanokümelerinin Hazırlanması, Karakterizasyonu ve DMAB Hidrolizindeki Katalitik Etkinliğinin İncelenmesi

Öz

Poli(N-vinil-2-pirolidon) (PVP) ile kararlaştırılmış Rh-Fe nanoparçacıkları (Rh-Fe@PVP) verimli ve çevreci bir yöntem olan alkol indirgeme tekniği ile sentezlendi. Sentezlenen nanoparçacıklar SEM, SEM/EDX, UV/Vis teknikleriyle karakterize edildi. Hazırlanan nanoparçacıklar yüksek hidrojen içeriği, kararlılığı ve çevre dostu olması gibi avantajları nedeniyle öne çıkan bir bor-azot (B-N) türevi olan dimetilamin-boranın hidroliz tepkimesinden hidrojen üretiminde katalizör olarak kullanıldı. TOF değeri (54.24 1/min) ve aktivasyon enerjisi (49.9 kJ/mol) olarak hesaplanan iki metalli nanoparçacıklar bu özellikleri ile verimli bir katalitik sistem olarak değerlendirildi. Katalizör ve substrat konsantrasyonlarının katalitik tepkime üzerindeki etkilerinin araştırılması sonucu tepkimenin hız ifadesinin; katalizör konsantrasyonuna göre 0.4 mertebeden, substrat konsantrasyonuna göre ise 0.3 mertebeden ilerlediği tespit edildi.

Anahtar Kelimeler

• Enerj
• Hidrojen
• Katalizör
• PVP
• DMAB

Kaynakça

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