Catalytic activity of Ni3S2 and effects of reactor wall in hydrogen production from water with hydrogen sulphide as a reducer under hydrothermal conditions

Applied Energy, Volume 104, April 2013, Pages 306–309
Catalytic activity of Ni3S2 and effects of reactor wall in hydrogen production from water with hydrogen sulphide as a reducer under hydrothermal conditions
Yuanqing Wang (a), Fangming Jin (b), Xu Zeng (a), Cuixiang Ma (a), Fengwen Wang (c), Guodong Yao (a), Zhenzi Jing (d)
a State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China
b School of Environmental Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
c School of Resources and Environment, Anhui Agricultural University, 130 West Changjiang Road, Hefei 230036, China
d School of Materials Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China
Abstract
Researchers studied the catalytic activity of Ni₃S₂ and the effects of reactor wall in hydrogen production from water under hydrothermal conditions using hydrogen sulphide (H₂S) as a reductant. They noted that Ni₃S₂ catalyzed the hydrogen production from water and may act as a semi-conductor catalyst.
With the addition of Ni₃S₂, the time required to achieve the maximum hydrogen yield significantly decreased and the maximum hydrogen yield increased. Results indicate that the Ni₃S₂ formed as a corrosion product of the reactor wall when using the Hastelloy C-276 lined reactor should play a catalytic role in the hydrogen production. This could facilitate studies for the synthesis of highly active catalysts for the production of hydrogen under mild conditions.
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