Trimetallic NiPtAg nanoparticles supported by SBA-15 for hydrogen production through hydrazine hydrate dehydrogenation reaction
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY(2024)
摘要
Hydrazine hydrate (N2H4 center dot H2O) is one of the compounds that can be used to produce hydrogen through a dehydrogenation reaction. The use of trimetallic nanoparticles can increase the catalytic activity and selectivity of the hydrogen produced. Ordered mesoporous silica SBA-15 was synthesized to be used as a support for NiPtAg trimetallic nanoparticles. NiPtAg/SBA-15 was synthesized from NiCl2.6H2O, K2PtCl6, AgNO3, and SBA-15 by wet impregnation method and then reduced by NaBH4. To determine the best variation of metal composition, optimization of the trimetallic composition was carried out. Ni0.6Pt0.2Ag0.2/SBA-15 catalyst demonstrates a good catalytic activity with selectivity of 94% and TOF of 321.9 h-1 at 343 K. The activation energy required by the Ni0.6Pt0.2Ag0.2/SBA-15 catalyst in the dehydrogenation reaction of hydrazine hydrate is 55.6 kJ/mol.
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关键词
Dehydrogenation,Heterogenous catalyst,Hydrazine hydrate,Hydrogen production,Nanoparticle trimetallic,SBA-15
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