Hydrogen Generation from Sodium Borohydride Hydrolysis with a Cu–Co-Based Catalyst: A Kinetic Study
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Tarih
2015
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Taylor and francis
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
In the present work, Cu–Co-supported catalysts were tested for hydrogen generation from the hydrolysis
reaction of an alkaline sodium borohydride solution. Cu–Co catalysts were prepared by the
chemical reduction with NaBH4 and characterized with scanning electron microscope. The effect of
Cu–Co ratio was investigated. The results suggested that the optimal mixture percentage of Cu–Co
catalyst was 60:40; excessive Cu resulted in poor catalytic activity. The reactions were carried out at
temperatures of 20, 30, 40, and 50°C. The experimental data was fitted to the nth-order kinetic models.
The results indicate that the nth-order model gives a reasonable description of the hydrogen generation
rate over all of the temperature range. The activation energy and pre-exponential factor of the nth-order
reaction model were obtained as 42.66 kJ mol−1 and 1.21 × 104, respectively.
Açıklama
Anahtar Kelimeler
Cu–Co catalyst, hydrogen generation, hydrolysis, kinetic, sodium borohydride
Kaynak
WoS Q Değeri
Q4
Scopus Q Değeri
Q1
Cilt
37
Sayı
9
