期刊
FUEL
卷 306, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.fuel.2021.121688
关键词
Ultrafine RuNPs; Ni-Fe LDH; Exfoliation; Defects; N-ethylcarbazole hydrogenation
资金
- National Key RD Program [2018YFE0108800]
- National Natural Science Foundation of China [21676074]
- Science Foundation of Heilongjiang Academy of Sciences [KY2020SH01]
Ultrafine Ru nanoparticles supported on N-doped exfoliated Ni-Fe layered double hydroxide nanosheets were prepared by nitrogen glow discharge plasma without chemical stabilizers or reducing agents.The experimental results show high catalytic activity and hydrogen storage capacity of the Ru/Ni-Fe LDH catalyst, with 100% NEC conversion and good selectivity towards 12H-NEC.
Ultrafine Ru nanoparticles (RuNPs) supported on N-doped exfoliated Ni-Fe layered double hydroxide (LDH) nanosheets (Ru/Ni-Fe LDH) are prepared by nitrogen glow discharge plasma without adding any chemical stabilizers or reducing agents. The Ru/Ni-Fe LDHs were characterized by FT-IR, XPS, XRD, AFM, TEM, SEM and N-2 physical adsorption-desorption analysis methods. The results show that the glow discharge plasma is not only able to reduce Ru3+ to Ru, but can also exfoliate Ni-Fe LDH into nanosheets and produce defects and dope N into the layered structure of Ni-Fe LDH. RuNPs with an average particle size of 1.81 nm were successfully obtained and well dispersed on the surface of N-doped exfoliated Ni-Fe LDH nanosheets. The experimental results from the catalytic hydrogenation of N-ethylcarbazole (NEC) over Ru/Ni-Fe LDH show that the NEC conversion is 100%, the dodecahydro-N-ethylcarbazole (12H-NEC) selectivity is 97.43%, and the mass hydrogen storage capacity is 5.74 wt% under the reaction temperature and pressure of 120 degrees C and 6 MPa for 80 min. The apparent activation energy is 44.86 kJ/mol.
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