Investigation of hydrogen generation from sodium borohydride using different cobalt catalysts

Balčiūnaitė, Aldona; Sukackienė, Zita; Antanaviciute, Kornelija; Vaičiūnienė, Jūratė; Naujokaitis, Arnas; Tamašauskaitė–Tamašiūnaitė, Loreta; Norkus, Eugenijus

doi:10.1016/j.ijhydene.2020.10.047

Cited by 32 publications

(9 citation statements)

References 45 publications

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“…The AC@Pt-Ru-Ni NP was reserved at 75% of its initially activity after three cycles [ 49 ]. CoBMo/Cu showed a good performance for five cycles, which kept 98% of its initial activity [ 60 ]. A decreased catalytic performance can be caused by an increase in solution viscosity, which reduces the number of available active sites or causes pores to become blocked due to the deposition of a sodium metaborate by-product [ 61 , 62 , 63 , 64 , 65 ].…”

Section: Recyclability Studies Of Ni 03 Co ...mentioning

confidence: 99%

Synthesis of Trimetallic Nanoparticle (NiCoPd)-Supported Carbon Nanofibers as a Catalyst for NaBH4 Hydrolysis

Abutaleb,

Maafa,

Zouli

et al. 2023

Membranes

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The generation of H2 via the catalytic hydrolysis of sodium borohydride (SBH) has promise as a practical and secure approach to produce H2, a secure and environmentally friendly energy source for the foreseeable future. In this study, distinctive trimetallic NiCoPd nanoparticle-supported carbon nanofibers (NiCoPd tri-NPs@CNFs) is synthesized via sol-gel and electrospinning approaches. The fabricated trimetallic catalysts show an excellent catalytic performance for the generation of H2 from the hydrolysis of SBH. Standard physicochemical techniques were used to characterize the as-prepared NiCoPd tri-NPs@CNFs. The results show that NiCoPd tri-NPs@CNFs is formed, with an average particle size of about 21 nm. When compared to NiCo bimetallic NP @CNFS, all NiCoPd tri-NPs@CNFs formulations demonstrated greater catalytic activates for the hydrolysis of SBH. The improved catalytic activity may be due in the majority to the synergistic interaction between the three metals in the trimetallic architecture. Furthermore, the activation energy for the catalytic hydrolysis of SBH by the NiCoPd tri-NPs@CNFs was determined to be 16.30 kJ mol−1. The kinetics studies show that the reaction is of a first order with respect to the catalyst loading amount and a half order with respect to the SBH concentration [SBH].

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Section: Recyclability Studies Of Ni 03 Co ...mentioning

confidence: 99%

Synthesis of Trimetallic Nanoparticle (NiCoPd)-Supported Carbon Nanofibers as a Catalyst for NaBH4 Hydrolysis

Abutaleb,

Maafa,

Zouli

et al. 2023

Membranes

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“…Noble metals, such as Pt [ 8 ], Pd [ 9 ], and Ru [ 10 ], exhibit excellent performance, yet their scarce reservation and rising cost challenge their coming industrial applications. Alternatively, non-precious metal catalysts, such as Ni [ 11 , 12 ] and Co [ 13 , 14 ], have been available to smooth this chemical transformation. For example, metal borides are widely used for these transition-metal-based catalysts such as cobalt or nickel borides [ 15 , 16 , 17 , 18 ].…”

Section: Introductionmentioning

confidence: 99%

Coronavirus-Like Core–Shell-Structured Co@C for Hydrogen Evolution via Hydrolysis of Sodium Borohydride

Chen

Yang

et al. 2023

Molecules

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Constructing a reliable and robust cobalt-based catalyst for hydrogen evolution via hydrolysis of sodium borohydride is appealing but challenging due to the deactivation caused by the metal leaching and re-oxidization of metallic cobalt. A unique core–shell-structured coronavirus-like Co@C microsphere was prepared via pyrolysis of Co-MOF. This special Co@C had a microporous carbon coating to retain the reduced state of cobalt and resist the metal leaching. Furthermore, several nano-bumps grown discretely on the surface afforded enriched active centers. Applied in the pyrolysis of NaBH4, the Co@C-650, carbonized at 650 °C, exhibited the best activity and reliable recyclability. This comparable performance is ascribed to the increased metallic active sites and robust stability.

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“…Sıvı halde hidrojenin depolanması ise sıvılaştırma için gerekli sıcaklığa (20 K) inmek için kullanılan özel komprasörlerin enerji ihtiyaçları ve sıvı hidrojenin uzun süre bu halde saklanmasındaki zorluklar sebebi ile yaygınlaşamamaktadır. Hidrojenin karbon nano yapılar ve metal hidrürler ve alaşımları içinde saklanması önerilse de bu konulardaki bilinmezliklerin giderilmesi için çalışmaların sürmesi gerekmektedir [15]. Hidrojenin kimyasal bileşikler bünyesinde saklanması kullanılabilecek diğer bir yöntemdir.…”

Section: Gi̇ri̇ş (Introduction)unclassified

NaBH4 Hidrolizi İçin Al2O3 Destekli Çok Bileşenli Nanokatalizör Sentezi ve Kinetik Değerlendirmesi

Çakanyıldırım

Gökçeoğlu

2023

Politeknik Dergisi

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Yapılan çalışmada Al2O3 destek üzerinde ikili Co-Fe ve üçlü Co-Fe-Pt katalizörleri emdirme tekniği ile sentezlenmiştir. Üretilen katalizörler ile alkali ortamda NaBH4'ün tepkime vermesi sağlanmış ve hidrojen üretim hızı ve kinetik verileri derlenmiştir. Katalizörlerin morfolojik ve boyutsal özelliklerinin anlaşılması maksadı ile taramalı ve geçirimli electron mikroskop (SEM ve TEM) analizleri, hidrojen üretim kapasiteleri ve kinetik verilerin belirlenmesi için ise hidroliz testleri gerçekleştirilmiştir. İki ve üç bileşenli katalizörlerden Co0,95Fe0,05/Al2O3 ve Co0,85Fe0,08Pt0,07/Al2O3 kendi gruplarında en iyi performansı sergilemişlerdir. 40 mg Co0,85Fe0,08Pt0,07/Al2O3 katalizörü ile 20 ˚C sıcaklıkta, 12.750 mL H2/gkat.min hidrojen üretim hızına erişilmiştir. NaBH4 ve katalizör miktarlarını farklılaştırılması ile yapılan çalışmalarda hidrojen üretim hızının katalizör miktarı ile orantılı olduğu ve NaBH4 miktarının tepkime hızına etki mertebesinin 0,22 olduğu görülmüştür. Yüksek aktivite sergileyen Co0,85Fe0,08Pt0,07/Al2O3 katalizörünün aktivasyon enerjisi 26,17 kJ/mol olarak hesaplanmıştır. Bu katalizörün tekrar kullanımlarındaki dönüşüm değerleri aktivitesine oranla daha tatmin edici düzeydedir.

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Investigation of hydrogen generation from sodium borohydride using different cobalt catalysts

Cited by 32 publications

References 45 publications

Synthesis of Trimetallic Nanoparticle (NiCoPd)-Supported Carbon Nanofibers as a Catalyst for NaBH4 Hydrolysis

Synthesis of Trimetallic Nanoparticle (NiCoPd)-Supported Carbon Nanofibers as a Catalyst for NaBH4 Hydrolysis

Coronavirus-Like Core–Shell-Structured Co@C for Hydrogen Evolution via Hydrolysis of Sodium Borohydride

NaBH4 Hidrolizi İçin Al2O3 Destekli Çok Bileşenli Nanokatalizör Sentezi ve Kinetik Değerlendirmesi

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