NaBH4 hydrolysis performance and kinetic evaluation of synthetic Co-Mn-Pt catalyst prepared with different supports

نویسندگان

چکیده

Bu çalışmada Co0,92-xMn0,08Ptx/TiO2 ve Co0,92-xMn0,08Ptx/Al2O3 nano katalizörleri sentezlenmiştir. Destekli katalizörlerin üretilmesinde impregnasyon tekniği kullanılmıştır. Katalizörlerin hidroliz yöntemi ile NaBH4’ü parçalararak yüksek hızda hidrojen üretme yetenekleri belirlenmiştir. özelliklerinin belirlenmesi için geçirimli taramalı electron mikroskopları (TEM SEM), X-ışını difraktometresi (XRD), yüzey alanı ölçüm gözenek dağılımı (Brunauer Emmett Teller) analizleri, enerji dağılım spektroskopisi (EDX) testleri gerçekleştirilmiştir. Testler destek aktif bileşenin birbiri iyi bir uyum içinde sıkıca tutunmuş halde olduğunu göstermiştir. TiO2 aktivitenin daha olduğu 22 ˚C sıcaklıkta 40 mg Co0,85Mn0,08Pt0,07/TiO2 katalizör gerçekleştirilen testlerinde 5 mL (0,525 M) NaBH4 çözeltisinin üretim hızı 6.250 H2/min.gkat olarak bulunmuştur. Değişik NaOH, miktarları sıcaklıklarda kinetik çalışmalar yapılmıştır. Hidroliz tepkimesi uygun NaOH miktarı 0,15 M tespit edilmiştir. Tepkime üzerinde miktarının etkin, miktarına göre ise sıfırıncı dereceden kinetiğe sahip Co0,85Mn0,08Pt0,07 içerikli Al2O3 destekleri sırasıyla 34,19 40,02 kJ/mol aktivasyon enerjisine

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ژورنال

عنوان ژورنال: Journal of The Faculty of Engineering and Architecture of Gazi University

سال: 2021

ISSN: ['1300-1884']

DOI: https://doi.org/10.17341/gazimmfd.877826