PT Journal
AU Li, Y
   Zhang, Y
   Cai, Y
   Zheng, X
   Zhang, R
TI Improving the Hydrogen Release Capacity of NaBH<sub>4</sub> via Mediation of Catalysts with Rare Metal Compounds
SO Manufacturing Technology Journal
PY 2015
BP 166
EP 170
VL 15
IS 2
DI 10.21062/ujep/x.2015/a/1213-2489/MT/15/2/166
DE Hydrogen Release Capacity; Rare Metal Compounds; Mixed Catalysts; Catalytic Effect
AB This paper reports on doping with the catalysts consist of rare metal compounds like Co<sub>2</sub>B, La(NO<sub>3</sub>)<sub>3</sub>, Ce(SO<sub>4</sub>)<sub>2</sub>, Ti(SO<sub>4</sub>)<sub>2</sub>, CeCl<sub>3</sub>, LaCl<sub>3</sub> and mixed catalysts for improving hydrogen release capacity of NaBH<sub>4</sub>. The results show that the hydrogen generation volume (HGV) is about 10ml and the hydrogen generation rate (HGR) is very low when doping with La(NO<sub>3</sub>)<sub>3</sub>, Ce(SO<sub>4</sub>)<sub>2</sub>, Ti(SO<sub>4</sub>)<sub>2</sub>, CeCl<sub>3</sub> and LaCl<sub>3</sub>. Comparatively, Co<sub>2</sub>B presents favorable catalytic effect on hydrogen generation properties of NaBH<sub>4</sub>. The study on the mixed catalysts find that the HGV of the samples doped with mixed catalyst of Co<sub>2</sub>B and Ce(SO<sub>4</sub>)<sub>2</sub> is the largest. Among all doped samples, the HGV of sample doped with 5Co<sub>2</sub>B\2Ce(SO<sub>4</sub>)<sub>2</sub> is the largest about 317ml. Compared to all samples doped with mixed catalysts, the samples doped with mixed catalysts of Co<sub>2</sub>B, Ce(SO<sub>4</sub>)<sub>2</sub>, Ti(SO<sub>4</sub>)<sub>2</sub> and CeCl<sub>3</sub> presents the best properties of hydrogen release. However, compared to Co<sub>2</sub>B, doping with other catalysts makes the hydrogen release time of NaBH<sub>4</sub> longer. Overall, NaBH<sub>4</sub> doped with the mixed catalysts of Co<sub>2</sub>B, Ti(SO<sub>4</sub>)<sub>2</sub> and CeCl<sub>3</sub> present the optimal HGV and HGR than doped with any other catalysts.
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