A new approach to the upgrading of the traditional propylene carbonate washing process with significantly higher CO2 absorption capacity and selectivity

Chen, Wan; Chen, Mengzijing; Yang, Mingke; Zou, Enbao; Li, Hai; Jia, Chongzhi; Sun, Chang‐Yu; Ma, Qing-Lan; Chen, Guangjin; He, Qingyou

doi:10.1016/j.apenergy.2019.01.236

Cited by 15 publications

(12 citation statements)

References 33 publications

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“…When a large negative voltage is applied, high concentrations of oxygen and nitrogen anions accumulate near the counter-electrode. If their concentration is high enough, bubbles form when the oxygen (or nitrogen) solubility limits 36,37 are exceeded. When this happens, these elements are irreversibly lost from the system (sample + electrolyte) and this is the main reason causing the lack of reversibility of magneto-ionic effects when positive voltage is applied.…”

Section: Resultsmentioning

confidence: 99%

Voltage-driven motion of nitrogen ions: a new paradigm for magneto-ionics

et al. 2020

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Magneto-ionics, understood as voltage-driven ion transport in magnetic materials, has largely relied on controlled migration of oxygen ions. Here, we demonstrate room-temperature voltage-driven nitrogen transport (i.e., nitrogen magneto-ionics) by electrolyte-gating of a CoN film. Nitrogen magneto-ionics in CoN is compared to oxygen magneto-ionics in Co3O4. Both materials are nanocrystalline (face-centered cubic structure) and show reversible voltage-driven ON-OFF ferromagnetism. In contrast to oxygen, nitrogen transport occurs uniformly creating a plane-wave-like migration front, without assistance of diffusion channels. Remarkably, nitrogen magneto-ionics requires lower threshold voltages and exhibits enhanced rates and cyclability. This is due to the lower activation energy for ion diffusion and the lower electronegativity of nitrogen compared to oxygen. These results may open new avenues in applications such as brain-inspired computing or iontronics in general.

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Section: Resultsmentioning

confidence: 99%

Voltage-driven motion of nitrogen ions: a new paradigm for magneto-ionics

et al. 2020

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“…2c). Given the high motion rates of N 3À ions across the 25 nm-thick CoN films (much larger than for thicker films -see Table S1, ESI †) and the limited N 3À solubility in the liquid electrolyte, 45,46 a N 3À ion accumulation effect at the interface between the magneto-ionic film and the liquid reservoir is envisaged. Due to the N 3À concentration gradient, these ions will be presumably released to the electrolyte once voltage is switched off (following Fick's laws 47 ), leading to the increase of M S .…”

Section: Enhancing Ion Motion By Film Thickness Reduction: Enabling M...mentioning

confidence: 99%

Frequency-dependent stimulated and post-stimulated voltage control of magnetism in transition metal nitrides: towards brain-inspired magneto-ionics

et al. 2023

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“…2.According to the diagram, mixture solvents in different composition were prepared and their viscosities at room temperature and atmospheric pressure were measured by using the capillary viscometer, which are listed in Table 1. Although the viscosity of mixture solvent are slightly higher than pure PC, they still remain in a lower level compared with 2-mIm-glycol-PC solvent [14]. The results indicate that compared with the traditional PC washing process, 2-mIm-water-PC solvent will not increase the load of liquid circling pumps in use.…”

Section: Resultsmentioning

confidence: 87%

High-Efficiency Carbon Capture With 2-Methylimidazole-Waterpropylene Carbonate Mixture Solvent

Wan¹,

Chen²,

Zou³

et al. 2020

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Solvent absorption is currently the main decarbonization method, in which propylene carbonate (PC) washing is widely applied in virtue of its low material loss and simple process. In regard of the low solubility and selectivity to CO 2 of PC, traditional PC washing process is improved by adding 2methylimidazole (2-mIm) and water as additives to PC. In this paper, firstly the miscible point of 2-mIm-water-PC three phase system as well as saturation point of 2-mIm were measured, so was the viscosity of mixture solvent. Next, the solubility of CO 2 in mixture solvents with different proportion was measured to make a comparison with that in pure PC, where temperature was in 298.15 and 308.15 K, pressure was in the range of 0.01-1.40 MPa. The heats of CO 2 absorption in these solvent mixtures were calculated using the Clausius-Clapeyron equation. Then the kinetic curves of pure PC and mixture solvents were measured, and solvent 2 (2-mIm 16.7 wt% + water 8.3 wt% + PC 75 wt%) showed an comparable absorption rate to that of pure PC and absorption balance can be achieved in a short time. Experimental results show that the mixture solvent possesses outstanding carbon capture capacity and is feasible to be applied in current PC washing process without any demand of equipment modification.

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A new approach to the upgrading of the traditional propylene carbonate washing process with significantly higher CO2 absorption capacity and selectivity

Cited by 15 publications

References 33 publications

Voltage-driven motion of nitrogen ions: a new paradigm for magneto-ionics

Voltage-driven motion of nitrogen ions: a new paradigm for magneto-ionics

Frequency-dependent stimulated and post-stimulated voltage control of magnetism in transition metal nitrides: towards brain-inspired magneto-ionics

High-Efficiency Carbon Capture With 2-Methylimidazole-Waterpropylene Carbonate Mixture Solvent

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