2,6-Di-tert-Bütilfenolün Çeşitli Oksidantlarla [5,10,15,20-Tetrakis(4-karboksifenil)porfirinato]kobalt(II) Katalizörlüğünde Oksidasyonu

Bu çalışmada 2,6-di-tert-bütilfenolün (DTBP) çeşitli oksidantlarla [5,10,15,20-tetrakis(4- karboksifenil)porfirinato]kobalt(II) ([CoTCPP]) tarafından katalizlenen oksidasyonu araştırılmıştır. Oksidant olarak potasyum peroksimonosülfat (okzon), tert-bütilhidroperoksit (ButOOH) veya hidrojen peroksit (H2O2) kullanılmış ve reaksiyonlar hacimce %10-15 su içeren metanol çözeltilerinde oda sıcaklığında yürütülmüştür. Oksidasyona substrat, katalizör ve oksidant derişimlerinin etkileri incelenmiştir. Reaksiyon ürünleri gaz kromatografisi-kütle spektrometresiyle (GC-MS) belirlenmiş ve ürünlerin ve reaksiyona girmemiş DTBP miktarları gaz kromatografisi (GC) ile elde edilen kromatogramlardaki pik alanlarından belirlenmiştir. DTBP oksidasyonunda oksidant olarak okzon ve ButOOH kullanıldığında [CoTCPP] katalitik aktivite göstermiştir. H2O2 varlığında ise [CoTCPP] katalitik aktivite göstermemiştir.

Oxidation of 2,6-Di-tert-Butylphenol Catalyzed by [5,10,15,20-Tetrakis(4- carboxyphenyl)porphyrinato]cobalt(II) in the Presence of Various Oxidants

In this study, the oxidation of 2,6-di-tert-butylphenol (DTBP) catalyzed by [5,10,15,20-tetrakis(4- carboxylphenyl)porphyrinato]cobalt(II) ([CoTCPP]) in the presence of various oxidants has been investigated. Potassium peroxymonosulfate (Oxone), tert-butylhydroperoxide (ButOOH) or hydrogen peroxide (H2O2) were used as oxidants and the reactions were carried out in 10-15% (v:v) of watermethanol solutions at room temperature. The effects of the concentration of the substrate, catalyst and oxidant on the outcome of the reactions were investigated. The products of the reaction mixtures were identified using GC-MS and the amounts of the products and unreacted DTBP were determined from the peak areas on GC chromatograms. [CoTCPP] showed catalytic activity in the oxidation of DTBP when Oxone or ButOOH was used as oxidant. No catalytic activity of [CoTCPP] was observed when the oxidant was H2O2.

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