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In situ preparation of ultrafine Ru nanocatalyst supported on nitrogen‐doped layered double hydroxide by nitrogen glow discharge plasma for catalytic hydrogenation of N ‐ethylcarbazole
Author(s) -
Shi Jiaming,
Bai Xuefeng
Publication year - 2020
Publication title -
applied organometallic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 71
eISSN - 1099-0739
pISSN - 0268-2605
DOI - 10.1002/aoc.5777
Subject(s) - catalysis , chemistry , hydroxide , x ray photoelectron spectroscopy , nitrogen , fourier transform infrared spectroscopy , nuclear chemistry , hydrogen , nanoparticle , inorganic chemistry , selectivity , particle size , transmission electron microscopy , chemical engineering , nanotechnology , materials science , organic chemistry , engineering
Ultrafine Ru nanoparticles (RuNPs) supported on nitrogen‐doped layered double hydroxide (Ru/LDH) were in situ prepared by nitrogen glow discharge plasma (nGDP) without adding any chemical reducing agents or stabilizers. The as‐synthesized Ru/LDH catalysts were characterized by X‐ray diffraction, X‐ray photoelectron spectroscopy, transmission electron microscopy, and Fourier transform infrared spectroscopy. During treatment with nGDP, the reduction of Ru 3+ and nitrogen doping were carried out simultaneously. The resulting RuNPs has a narrow particle size distribution of 1.41–2.61 nm, an ultrafine average particle size of 1.86 nm, and were uniformly dispersed on nitrogen‐doped LDH. The complexation of RuNPs and O/N‐containing functional groups on LDH improve the catalytic activity and stability of Ru/LDH. The catalyst exhibited excellent properties for the hydrogenation reaction of N ‐ethylcarbazole (NEC). The conversion of NEC and the selectivity of 12H‐NEC were 100% and 99.06% for 1 hr at 120°C and 6 MPa H 2 , respectively. The mass hydrogen storage capacity was 5.78 wt%. The apparent activation energy was 35.78 kJ/mol.