Cuprous/Vanadium Sites on MIL-101 for Selective CO Adsorption from Gas Mixtures with Superior Stability

Yu, Yin; Wen, Zhi-Hao; Shi, Lei; Zhang, Zhuangzhuang; Yang, Zixu; Xu, Chunli; Sun, Hongqi; Wang, Shaobin; Yuan, Aihua

doi:10.1021/acssuschemeng.9b00699

Cited by 43 publications

(31 citation statements)

References 53 publications

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“…Also, the values of ΔG sol and ΔS sol were – 219.2 J mol −1 and − 63.6 J mol −1 K −1 at 353.2 K, respectively. Thereby, the value of Δ H sol for [BimH]Cl‐CuCl‐1.0ZnCl 2 was little more than the hydrogen bonding energy range from −10 to −20 kJ mol −1 , 35,36 again confirming the physical absorption of CO in the DES [BimH]Cl‐CuCl‐1.0ZnCl 2 .…”

Section: Resultsmentioning

confidence: 78%

Promoted absorption of CO at high temperature by cuprous‐based ternary deep eutectic solvents

Tao

et al. 2020

AIChE Journal

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Achieving efficient dissolution of carbon monoxide (CO) in the solvent is very helpful for the implementation of carbonylation reaction at ambient pressure. However, almost all of common solvents show very low solubilities of CO at high temperature. Herein, a series of cuprous‐based ternary deep eutectic solvent (DES) was prepared by mixing imidazolium hydrochloride with CuCl and ZnCl2. The ternary DES [BimH]Cl‐CuCl‐1.0ZnCl2 exhibited very large CO absorption capacity (0.075 mol mol−1, 1 bar) even at a high temperature (353.2 K), which is superior to all of the reported absorbents. Moreover, the ternary DES [BimH]Cl‐CuCl‐1.0ZnCl2 could further promote the reactive absorption of CO to conduct the aminocarbonylation reaction effortlessly at ambient pressure, and thus the targeted products benzamides were obtained in 70–97 yields. We believe that this finding opens a new way to design advanced solvents for efficient capture of CO at high temperature.

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Section: Resultsmentioning

confidence: 78%

Promoted absorption of CO at high temperature by cuprous‐based ternary deep eutectic solvents

Tao

et al. 2020

AIChE Journal

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“…ILs, ionic liquids ratio of CO and N 2 on various ILs and adsorbent materials at 1 bar was further compared, and the results are presented in Figure 3. It is demonstrated that the CO/N 2 absorption amount ratio for [EimH][OAc]-0.6CuOAc reached a record value of 967 at 293.15 K and 1 bar, which is much higher than many ILs[12][13][14]20,27 and most porous MOFs adsorbent materials [29][30][31][32]. The ultralow N 2 capacity plus superior CO uptake in [EimH][OAc]-0.6CuOAc contributes to the highest CO/N 2 ideal separation selectivity.…”

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confidence: 98%

Cuprous‐based composite ionic liquids for the selective absorption of CO: Experimental study and thermodynamic analysis

Tao

Gao

et al. 2022

AIChE Journal

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Three cuprous-based composite ionic liquids (ILs) [EimH][OAc]-xCuOAc (x = 0.5, 0.6, 0.7) were prepared and employed for efficient absorption of CO. It is shown that the cuprous composite IL [EimH][OAc]-0.6CuOAc exhibited the largest absorption capacity for CO (0.031 g/g at 293.15 K and 1 bar) and had a record CO/N 2 selectivity of 967, which is better than most of common ILs and solvents reported in the literature. The results of Fourier transform infrared (FTIR) spectra, electrospray ionization mass spectrometry (ESI-MS) analysis, and theoretical calculations reveal that such superior CO capacity mainly resulted from two kinds of chemical interaction between CO and the active anionic species [Cu(OAc) 2 ] À in [EimH][OAc]-0.6CuOAc. Furthermore, a "deactivated IL model" was further proposed to accurately describe the absorption behavior of CO in [EimH][OAc]-0.6CuOAc, in which the thermodynamic parameters including Henry's law constants, reaction equilibrium constants, and absorption enthalpies were estimated by the correlation of the experimental solubilities of CO.

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“…MIL-101(Cr) was prepared based on a typical route. , First, Cr(NO 3 ) 3 ·9H 2 O (2.0007 g), TPA (0.8307 g), and ultrapure water (25.2 mL) were mixed and stirred for 1 h. Then, HF (0.8 mL) was added into the mixture. Additional 2 h of stirring was conducted; after that, the mixture was loaded into a Teflon-lined stainless-steel autoclave and followed by being treated at 220 °C for 8 h. Then, the product was gradually cooled down to 25 °C, filtrated, and dried at 150 °C.…”

Section: Methodsmentioning

confidence: 99%

Confinement of Ag(I) Sites within MIL-101 for Robust Ethylene/Ethane Separation

Zhang

et al. 2019

ACS Sustainable Chem. Eng.

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Effective utilization of Ag(I) π-complexation adsorbents for practical C 2 H 4 /C 2 H 6 separation urges both good separating performances and high stabilities. In this work, we incorporated AgNO 3 onto a typical metal− organic framework (MOF) of MIL-101 to obtain efficient Ag(I) πcomplexation adsorbents. It was found that the separation performances were highly dependent on the location of the AgNO 3 , which could be at the interior or the exterior of nanoporous MIL-101. Confining AgNO 3 inside the nanopores of MIL-101 was achieved through employing a double-solvent approach. The resulting AgM-DS adsorbents exhibited superior performances compared with not only pristine MIL-101 but also other modified samples with AgNO 3 at the exterior of MIL-101. To be specific, the optimal 1.6AgM-DS adsorbent secured good C 2 H 4 /C 2 H 6 separation, which is C 2 H 4 uptake (75.5 cm 3 •g −1 ) and C 2 H 4 /C 2 H 6 selectivity (9.5) at 100 kPa. For comparison, the C 2 H 4 uptakes for MIL-101, 1.6AgM-WI, and 1.6AgM-SG were merely 48.1, 56.0, and 19.4 cm 3 •g −1 , and the corresponding IAST selectivity was only 1.1, 8.1, and 1.8, respectively. It was further indicated that the 1.6AgM-DS adsorbent maintained good stability for 3 weeks, alleviating the light sensitivity of AgNO 3 . This work opens an avenue for constructing stable Ag(I) sites on MOFs to develop π-complexation adsorbents.

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Cuprous/Vanadium Sites on MIL-101 for Selective CO Adsorption from Gas Mixtures with Superior Stability

Cited by 43 publications

References 53 publications

Promoted absorption of CO at high temperature by cuprous‐based ternary deep eutectic solvents

Promoted absorption of CO at high temperature by cuprous‐based ternary deep eutectic solvents

Cuprous‐based composite ionic liquids for the selective absorption of CO: Experimental study and thermodynamic analysis

Confinement of Ag(I) Sites within MIL-101 for Robust Ethylene/Ethane Separation

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