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Hydrogen Generation from Hydrolysis of Sodium Borohydride with Ni(0) Catalyst in Dielectric Barrier Discharge Method

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In this study, the hydrogen production from hydrolysis of sodium borohydride (NaBH4) in the presence of the catalytic properties of Ni(0), which is reduced from NiCl2.6H2O, was investigated with a dielectric barrier discharge plasma method. The hydrogen production from NaBH4 hydrolysis with Ni(0) catalyst prepared in dielectric barrier discharge plasma media created by applying a certain amount of voltages (3–5 kV) and plasma applying times (5–15 min) was investigated depending on NaBH4 concentration (3.2–10%) in solutions, NaOH concentration (1.5–10%) in solutions, catalyst amount (5–20 mg), and temperature (20–60°C). Hydrolysis reaction of NaBH4 with Ni(0) prepared in the presence of dielectric barrier discharge plasma is completed in 45-min time intervals with fast hydrogen generation while the Ni(0) produced in a known method led to a slow hydrogen release and hydrolysis is completed in 70-min time intervals. The hydrogen yield of 3.2, 5, and 10% NaBH4 solution with Ni(0) catalyst prepared in the presence of dielectric barrier discharge plasma takes the values of 95.06, 57.42, and 31.78% at the end of 45 min, respectively. The experimental data were fitted to first-order. The activation energy for first-order was found to be 41.76 kJ mol−1.
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Keywords: Ni(0) catalyst; dielectric barrier discharge; hydrogen generation; sodium borohydride

Document Type: Research Article

Affiliations: 1: Faculty of Engineering and Architecture, Siirt University, Siirt, Turkey 2: School of Healty, Siirt University, Siirt, Turkey

Publication date: September 2, 2014

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