In situ construction of Ni enriched porous NiAl as long-lived electrode for hydrogen evolution at high current densities

Zhang, Jingtao; Zhang, Zhen; Yao, Yuanjun; Ma, Xiaoxue; Yang, Yibin; Chen, Ying; Cheng, Zhengdong

doi:10.1016/j.apsusc.2019.05.352

Cited by 14 publications

(9 citation statements)

References 66 publications

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“…XRD diffraction also supported the good resistance to sintering of the catalyst, as the Ni 0 crystallite size only slightly increased from 5.3 to 7.3 nm (Figure S4). In addition, no obvious difference was found in the XPS spectrum of Ni 1 Al catalysts before and after reaction (Figure 7b), which showed a clear photoelectron peak at 852.1 eV attributed to zero-valent nickel, 55 indicating the good resistance to oxidation of the Ni 1 Al catalyst. Note that the Ni 2+ photoelectron peak detected for both fresh and spent catalysts would be formed during sample preparation.…”

Section: ■ Experimental Sectionmentioning

confidence: 96%

Efficient Synthesis of Pharmaceutical Intermediates from Biomass-Derived Aldehydes and Ketones over Robust Ni_xAl Nanocatalysts

Zhang

Yang

et al. 2022

ACS Sustainable Chem. Eng.

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Heterogeneous catalytic reductive amination of biomass-based carbonyl compounds is a highly attractive strategy to realize green and sustainable amine synthesis under mild conditions. Herein, N 1,N 1-diethyl-1,4-pentanediamine, a key side chain of chloroquine pharmaceuticals, was highly selectively synthesized through the reductive amination of 5-diethylamino-2-pentanone on active Ni x Al nanocatalysts with different Ni/Al molar ratios prepared by the simple co-precipitation method. The Ni1Al catalyst presented the highest target diamine product yield (up to 99%) among the Ni x Al catalysts. This catalyst also exhibited remarkable stability in a fixed-bed reactor without deactivation after 200 h of continuous operation, thanks to its good anti-sintering and anti-oxidation properties. Systematic structure characterizations and catalytic activity tests showed that their catalytic activity depended sensitively on the Ni/Al molar ratio, which governed the dispersion, reducibility, and surface acidity of the catalysts. The synergic catalysis of highly dispersed active Ni0 nanoparticles with abundant adjacent surface Lewis acidic sites accounted for the outstanding catalytic performance of the Ni1Al catalyst. Moreover, such novel catalysts also presented high activity in the reductive amination of several other biomass-derived aldehydes and ketones to produce the corresponding amines, achieving 91–99% yields under mild conditions of 80–100 °C and 1–2 MPa.

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Section: ■ Experimental Sectionmentioning

confidence: 96%

Efficient Synthesis of Pharmaceutical Intermediates from Biomass-Derived Aldehydes and Ketones over Robust Ni_xAl Nanocatalysts

Zhang

Yang

et al. 2022

ACS Sustainable Chem. Eng.

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“…Hydrocarbons are still a common energy source with its advantages and disadvantages, but hydrogen offers an alternative. It is an interesting substitute for sustainable energy applications and a chemical raw material [1,2]. It can be easily utilized in fuel cells [3], exhibiting an energy efficiency 2.75 times higher than hydrocarbon-based fuels [4].…”

Section: Introductionmentioning

confidence: 99%

Enhanced Electrochemical Activity of NiAl Cathode for Hydrogen Production

Latreche,

Boutarek-Zaourar,

Bencherifa

et al. 2024

Preprint

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This work is devoted to the elaboration of Ni68%Al32% wt. (NiAl) intermetallic compound highly electro-active and cost-effective electrode materials using an induction furnace utilized as cathodes in alkaline water reduction into hydrogen. The XRD analysis showed the formation of the NiAl phase with an average crystallite size of 44.13 nm. The SEM/EDS results confirm the XRD results with an average grain size of 50 µm. The chemical activation of Aluminum from NiAl was carried out on NaOH (25%) solution at 353 K for 72 h. The Optical Profilometry and UV-visible spectrophotometry confirmed the formation of Ni-Raney-type electrodes with high specific surface area. The activated NiAl electrodes resulted in remarkable efficiency for the hydrogen evolution reaction (HER), 13 times higher than the non-activated electrode. The comparison with literature data reveals that the efficiency of the NiAl cathode has increased by 120% compared to pure Ni.

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“…Presently, hydrogen is mainly produced from steam reforming of natural gas, petroleum or coal [6], not only still consuming fossil fuels, but also environmentally unfriendly [7,8]. In comparison, electrolytic water splitting is generally regarded as a more sustainable and cleaner approach for hydrogen production [9,10].…”

Section: Introductionmentioning

confidence: 99%

“…Ni-based materials are favorable non-noble metal alternatives for HER catalysts owing to their comparatively high activity and stability [22][23][24][25][26][27]. It has been reported that the stimulation of diffusion of Al into Ni can effectively enhance the electrocatalytic activity [28], and thereby various Al-Ni alloys have been synthesized as HER catalysts [8,[28][29][30][31]. In particular, the formation of Al 3 Ni 2 intermetallic compound, with large surface roughness and small grain size, in Al-Ni alloys is highly favorable to the catalytic performance [11,28].…”

Section: Introductionmentioning

confidence: 99%

One-step controllable fabrication of 3D structured self-standing Al3Ni2/Ni electrode through molten salt electrolysis for efficient water splitting

Hua

Zhu

et al. 2022

Chemical Engineering Journal

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In situ construction of Ni enriched porous NiAl as long-lived electrode for hydrogen evolution at high current densities

Cited by 14 publications

References 66 publications

Efficient Synthesis of Pharmaceutical Intermediates from Biomass-Derived Aldehydes and Ketones over Robust Ni_xAl Nanocatalysts

Efficient Synthesis of Pharmaceutical Intermediates from Biomass-Derived Aldehydes and Ketones over Robust Ni_xAl Nanocatalysts

Enhanced Electrochemical Activity of NiAl Cathode for Hydrogen Production

One-step controllable fabrication of 3D structured self-standing Al3Ni2/Ni electrode through molten salt electrolysis for efficient water splitting

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In situ construction of Ni enriched porous NiAl as long-lived electrode for hydrogen evolution at high current densities

Cited by 14 publications

References 66 publications

Efficient Synthesis of Pharmaceutical Intermediates from Biomass-Derived Aldehydes and Ketones over Robust NixAl Nanocatalysts

Efficient Synthesis of Pharmaceutical Intermediates from Biomass-Derived Aldehydes and Ketones over Robust NixAl Nanocatalysts

Enhanced Electrochemical Activity of NiAl Cathode for Hydrogen Production

One-step controllable fabrication of 3D structured self-standing Al3Ni2/Ni electrode through molten salt electrolysis for efficient water splitting

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Efficient Synthesis of Pharmaceutical Intermediates from Biomass-Derived Aldehydes and Ketones over Robust Ni_xAl Nanocatalysts

Efficient Synthesis of Pharmaceutical Intermediates from Biomass-Derived Aldehydes and Ketones over Robust Ni_xAl Nanocatalysts