Hydrogen Production from Aluminum Hydrolysis with Different Solutions

Öz

Today, fossil fuels are widely used as an energy source. The use of fossil fuels has devastating effects on the environment. Therefore, the use of clean and renewable energy sources is very important for our nature. When hydrogen is used as an energy source, clean by-products such as water don’t pollute the environment. Therefore, it is in the category of clean and renewable energy source. In this study, hydrogen production was carried out by hydrolysis of aluminum powders using different solutions. In the study, water, KOH, Mg(OH)2 and NaOH solutions, 35-65°C temperature range, 0% to 15% NaCl addition, 5 to 15 h aluminum milling time were investigated. Microstructures of the milled powders were characterized by SEM. Looking at the results, it was observed that the hydrogen production rate increased as the alkali solution concentration, temperature, NaCl addition rate and milling time increased. The best hydrogen production was seen at 65oC, 15% NaCl, 15 h milling time and 1 M NaOH solution.

Anahtar Kelimeler

• Hydrogen production with aluminum
• alkaline solutions
• aluminum hydrolysis
• hydrogen production rate
• NaCl

Farklı Çözeltiler ile Alüminyum Hidrolizinden Hidrojen Üretimi

Öz

Günümüzde enerji kaynağı olarak yaygın bir şekilde fosil yakıtlar kullanılmaktadır. Fosil yakıtların kullanımının çevreyi oldukça tahrip edici etkileri bulunmaktadır. Bu yüzden temiz ve yenilenebilir enerji kaynaklarının kullanılması doğamız için oldukça önemlidir. Hidrojen enerji kaynağı olarak kullanıldığında su gibi çevreyi kirletmeyen temiz yan ürünler ortaya çıkmaktadır. Bu nedenle, temiz ve yenilenebilir enerji kaynağı kategorisinde yer almaktadır. Bu çalışmada hidrojen üretimi, farklı çözeltiler de kullanılarak alüminyum tozlarının hidrolizi yöntemiyle gerçekleştirilmiştir. Çalışmada, su, KOH, Mg(OH)2 ve NaOH çözeltileri, 35-65oC sıcaklık aralığı, %0 ile %15 arası NaCl ilavesi, 5 ile 15 h arası alüminyum öğütme süresi incelenmiştir. Öğütülmüş tozların mikroyapıları SEM ile karakterize edilmiştir. Sonuçlara bakıldığında alkali çözelti konsantrasyonu, sıcaklık, NaCl ilavesi oranı ve öğütme süresi arttıkça hidrojen üretim hızında artış gözlemlenmiştir. En iyi hidrojen üretimi, 65oC, %15 NaCl, 15 h öğütme süresi ve 1 M NaOH çözeltisinde görülmüştür.

Anahtar Kelimeler

• Alüminyum ile hidrojen üretimi
• alkali çözeltiler
• alüminyum hidrolizi
• hidrojen üretim hızı
• NaCl

Kaynakça

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