Yanıt Yüzey Metodu Analizi: Alkali Elektroliz ile Hidrojen Gazı Üretimi

Öz

Bu çalışmada alkali elektroliz hücresi ile hidrojen gazı üretimi için laboratuvar ölçekli, iki elektrotlu bir sistem kurulmuştur. Anot olarak soy metal olan platin kullanılırken, katot olarak nikel köpük elektrotlar galvanostatik yöntemle nikel-bakır-molibden (NiCuMo) ile modifiye edilmiştir. Sisteme faklı uygulama potansiyelleri (2,4 V; 2,7 V ve 3 V) uygulanmış ve farklı süreler için elde edilen hidrojen gazı hacimleri belirlenmiştir. Deneysel bulgulara göre 30 dakikalık elektroliz işlemi sonrasında artan uygulama potansiyellerine göre sırasıyla; 77,30; 90,67 ve 105,08 mL hidrojen gazı üretilmiştir. Söz konusu sistemin optimizasyonu için yanıt yüzey metodu analizi (RSM) kullanılmıştır. Sistem etkinlik analizinde elektroliz potansiyeli ve süre değişken olarak seçilerek hidrojen gazı üretim hacmine ve yük miktarına etkileri araştırılmıştır. Hidrojen hacmi ve yük miktarı için tahmini R2 değerleri sırasıyla 0,9956 ve 0,9955 olarak belirlenmiştir. Hidrojen gazı hacim ve yük değerleri için %Hata sırasıyla 2,71 ve 0,5‘dir.

Anahtar Kelimeler

• Yanıt yüzey metodu
• Alkali elektroliz
• Hidrojen
• Optimizasyon

Response Surface Method Analysis: Hydrogen Gas Production by Alkaline Electrolysis

Öz

In this study, the laboratory scale, two-electrode system was established for the production of hydrogen gas with an alkaline electrolysis cell. The noble metal platinum was utulized as the anode and the nickel foam electrodes which were modified with nickel-copper-molybdenum (NiCuMo) by galvanostatic method, was used as the cathode. Different operation potentials (2.4 V; 2.7 V and 3 V) were applied to the system and the hydrogen gas volumes obtained for variable duration times were determined. According to the results of the study, after 30 minutes of electrolysis, 77.30, 90.67, and 105.08 mL of hydrogen gas were produced, respectively, based on the rising application potentials. The surface response method analysis (RSM) was used for the optimization of the system. In the system efficiency analysis, the electrolysis potential and time were chosen as variables and their effects on the hydrogen gas production volume and the amount of charge were investigated. The R2 values of hydrogen volume and charge amount were 0.9956 and 0.9955, respectively. The error% was determined as 2.71 and 0.5 for the hydrogen gas volume and charge values, respectively.

Anahtar Kelimeler

• Response surface method
• Alkaline electrolysis
• Hydrogen
• Optimization

Kaynakça

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