Carbon Supported Nico Alloy Nanoclusters: Synthesis, Charactarization and Their Catalytic Application in the Methanolysis of the Ammonia Borane
Abstract
Karbon destekli oleylamin ile kararlaştırılmış bimetalik NiCo(0) nanokümeleri (NiCo@C) kolladial yöntem ile hazırlandı. Elde edilen NiCo@C malzemesinin tanımlanması ICP-OES, P-XRD, XPS, TEM gibi ileri analitiksel yöntemler kullanılarak gerçekleştirildi. Yapılan tanımlama sonuçları bize ortalama parçacık boyutları 5.11 ± 0.54 nm olan bimetalik NiCo nanokümelerinin aktif karbon yüzeyinde oluştuğunu göstermiştir. NiCo@' un katalitik performansı, etkinlik ve kararlılık açısından uygun koşullar altında (25 °C) amonyak boranın (NH3BH3) metanoliz tepkimesinde incelendi. Ni0.19Co0.81@C katalizörü yüksek dönüşümde (%100) ve 136.65 dak-1 çevrim frekansı ile amonyak boranın metanoliz tepkimesini katalizlediğini tespit ettik. Ayrıca, aktif karbon destekli bimetalik NiCo nanokümelerinin sızma ve sinterleşmeye karşı oldukça kararlı olduğu bulundu, bu da Ni0.19Co0.81@C katalizörünün etkinliğini kaybetmeksizin amonyak boran metanoliz tepkimesinde tekrar kullanılabilir heterojen katalizör olduğunu göstermektedir.
Activated carbon supported bimetallic NiCo(0) oleylamine stabilized nanoclusters (NiCo@C) were prepared by colladial method. Identification of the obtained NiCo@C material was carried out using advanced analytical methods such as ICP-OES, P-XRD, XPS, TEM. The results of the identification showed us that bimetallic NiCo nanoclusters with an average particle size of 5.11 ± 0.54 nm were formed on the activated carbon surface. The catalytic performance of NiCo@C was investigated in the methanolysis reaction of ammonia-borane (NH3BH3) under favorable conditions (25 °C) in terms of activity and stability. We found that Ni0.19Co0.81@C catalyst catalyzes the methanolysis reaction of ammonia borane at high conversion (100%) and with a cycle frequency of 136.65 min-1. Furthermore, activated carbon supported bimetallic NiCo nanoclusters were found to be highly stable against leaching and sintering, indicating that the Ni0.19Co0.81@C catalyst is a reusable heterogeneous catalyst in the ammonia borane methanolysis reaction without losing its effectiveness.
Activated carbon supported bimetallic NiCo(0) oleylamine stabilized nanoclusters (NiCo@C) were prepared by colladial method. Identification of the obtained NiCo@C material was carried out using advanced analytical methods such as ICP-OES, P-XRD, XPS, TEM. The results of the identification showed us that bimetallic NiCo nanoclusters with an average particle size of 5.11 ± 0.54 nm were formed on the activated carbon surface. The catalytic performance of NiCo@C was investigated in the methanolysis reaction of ammonia-borane (NH3BH3) under favorable conditions (25 °C) in terms of activity and stability. We found that Ni0.19Co0.81@C catalyst catalyzes the methanolysis reaction of ammonia borane at high conversion (100%) and with a cycle frequency of 136.65 min-1. Furthermore, activated carbon supported bimetallic NiCo nanoclusters were found to be highly stable against leaching and sintering, indicating that the Ni0.19Co0.81@C catalyst is a reusable heterogeneous catalyst in the ammonia borane methanolysis reaction without losing its effectiveness.
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Enerji, Kimya, Anorganik kimya, Hidrojen enerjisi, Metal oksit katalizörü, Yenilenebilir enerji kaynakları, Energy, Chemistry, Inorganic chemistry, Hydrogen energy, Metal oxide catalyst, Renewable energy resources
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