Utilization of Aluminium for Hydrogen Production: A Sustainable and In-Situ Approach

Abstract

The production of hydrogen from affordable and widely available resources is necessary for the broader adoption of hydrogen as a sustainable energy carrier. Aluminium, because of its significant energy content per unit mass, natural abundance, and recyclability, has attracted significant attention as a reactive material for on-demand hydrogen generation when combined with water or reducing agents such as sodium borohydride (NaBH4) and hydrogen chloride (HCl). Furthermore, aluminium scraps are a valuable resource which can be used to produce various useful products such as hydrogen, alumina, potash alum, etc. A major limitation in utilising aluminium for hydrogen production is the development of a stable oxide layer (Al2O3) on its outer layer, which inhibits its reaction with water. To overcome this barrier and improve hydrogen yield, various activation techniques have been explored. This review critically examines several activation methods aimed at enhancing the reactivity of aluminium, including salt-assisted activation, metal-assisted activation, particle size reduction, etc. The study concludes with a discussion on future directions, emphasising the need for environmentally friendly activation strategies, reusable reaction systems, and integration with aluminium scrap recycling and renewable energy systems to support sustainable hydrogen production.

Keywords

• : Aluminium
• hydrogen
• sustainable
• in-situ approach
• scrap utilisation

Alüminyumun Hidrojen Üretimi için Kullanımı: Sürdürülebilir ve Yerinde Bir Yaklaşım

Abstract

Uygun fiyatlı ve yaygın olarak bulunan kaynaklardan hidrojen üretimi, hidrojenin sürdürülebilir bir enerji taşıyıcısı olarak daha geniş bir şekilde benimsenmesi için gereklidir. Birim kütle başına önemli enerji içeriği, doğal bolluğu ve geri dönüştürülebilirliği nedeniyle alüminyum, su veya sodyum borohidrit (NaBH4) ve hidrojen klorür (HCl) gibi indirgeyici maddelerle birleştirildiğinde talep üzerine hidrojen üretimi için reaktif bir malzeme olarak önemli ilgi görmüştür. Ayrıca, alüminyum hurdaları hidrojen, alümina, potasyum şap vb. gibi çeşitli yararlı ürünler üretmek için kullanılabilen değerli bir kaynaktır. Alüminyumun hidrojen üretimi için kullanılmasındaki en büyük sınırlama, dış tabakasında suyla reaksiyonunu engelleyen kararlı bir oksit tabakasının (Al2O3) geliştirilmesidir. Bu bariyeri aşmak ve hidrojen verimini artırmak için çeşitli aktivasyon teknikleri araştırılmıştır. Bu inceleme, tuz destekli aktivasyon, metal destekli aktivasyon, parçacık boyutu küçültme vb. dahil olmak üzere alüminyumun reaktifliğini artırmayı amaçlayan çeşitli aktivasyon yöntemlerini eleştirel bir şekilde inceler. Çalışma, sürdürülebilir hidrojen üretimini desteklemek için çevre dostu aktivasyon stratejilerine, yeniden kullanılabilir reaksiyon sistemlerine ve alüminyum hurda geri dönüşümü ve yenilenebilir enerji sistemleriyle entegrasyona olan ihtiyacı vurgulayarak gelecekteki yönler hakkında bir tartışmayla sonuçlanır.

Keywords

• Alüminyum
• hidrojen
• sürdürülebilir
• yerinde yaklaşım
• hurda kullanımı

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