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Process development for biomass delignification using deep eutectic solvents. Conceptual design supported by experiments. Chem Eng Res Des 2020. [DOI: 10.1016/j.cherd.2020.09.018] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Comparing multistage liquid–liquid extraction with cold water precipitation for improvement of lignin recovery from deep eutectic solvents. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2020.117395] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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High CO2 absorption in new amine based-transition-temperature mixtures (deep eutectic analogues) and reporting thermal stability, viscosity and surface tension: Response surface methodology (RSM). J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.113863] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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CO 2 -Philic Separation Membrane: Deep Eutectic Solvent Filled Graphene Oxide Nanoslits. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2019; 15:e1904145. [PMID: 31642611 DOI: 10.1002/smll.201904145] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Revised: 09/25/2019] [Indexed: 06/10/2023]
Abstract
CO2 capture and sequestration is an energy-intensive industry to deal with the global greenhouse effect. Membrane separation is considered a cost-effective method to mitigate the emission of CO2 . Though good separation performance and stability have been reported, supported ionic liquid membranes are still not widely applied for CO2 separation due to the high cost. As a novel analogous solvent to ionic liquid, deep eutectic solvent retains the excellent merits of ionic liquid and is cheap with facile preparation. Herein, a highly CO2 -philic separation membrane is constructed by nanoconfining choline chloride/ethylene glycol (ChCl/EG) deep eutectic solvent into graphene oxide nanoslits. Molecular dynamic simulation results indicate that the confinement makes a difference to the structure of the nanoconfined ChCl/EG liquid from their bulk, which remarkably facilitates CO2 transport. By tuning the molar ratio of ChCl/EG and thickness of the membrane, the resultant membrane exhibits outstanding separation performance for CO2 with excellent selectivity over other light gases, good long-term durability, and thermal stability. This makes it a promising membrane for selective CO2 separation.
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Affiliation(s)
- Hanqing Lin
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, 38 Zheda Road, Hangzhou, 310027, P. R. China
| | - Ke Gong
- College of Material Science and Engineering, China University of Petroleum (East China), Qingdao, 266580, P. R. China
| | - Wen Ying
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, 38 Zheda Road, Hangzhou, 310027, P. R. China
| | - Danke Chen
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, 38 Zheda Road, Hangzhou, 310027, P. R. China
| | - Jun Zhang
- College of Material Science and Engineering, China University of Petroleum (East China), Qingdao, 266580, P. R. China
| | - Youguo Yan
- College of Material Science and Engineering, China University of Petroleum (East China), Qingdao, 266580, P. R. China
| | - Xinsheng Peng
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, 38 Zheda Road, Hangzhou, 310027, P. R. China
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Carbon-GO Composites with Preferential Water versus Ethanol Uptake. ACS APPLIED MATERIALS & INTERFACES 2019; 11:24493-24503. [PMID: 31199609 DOI: 10.1021/acsami.9b02745] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
The elimination of small amounts of water from alcohols is by no means a trivial issue in many practical applications like, for instance, the dehumidification of biocombustibles. The use of carbonaceous materials as sorbents has been far less explored than that of other materials because their hydrophobic character has typically limited their water uptake. Herein, we designed a synthetic process based on the use of eutectic mixtures that allowed the homogeneous dispersion of graphene oxide (GO) in the liquid containing the carbon precursor, e.g., furfuryl alcohol. Thus, after polymerization and a subsequent carbonization process, we were able to obtain porous carbon-GO composites where the combination of pore diameter and surface hydrophilicity provided a remarkable capacity for water uptake but extremely low methanol and ethanol uptake along the entire range of relative pressures evaluated in this work. Both the neat water uptake and the uptake difference between water and either methanol or ethanol of our carbon-GO composites were similar or eventually better than the uptake previously reported for other materials, also exhibiting preferential water-to-alcohol adsorption, e.g., porous coordination polymers, metal-organic frameworks, polyoxometalates, and covalent two-dimensional nanosheets embedded in a polymer matrix. Moreover, water versus alcohol uptake was particularly remarkable at low partial pressures in our carbon-GO composites.
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Affiliation(s)
| | | | - Carlos Cuadrado-Collados
- Laboratorio de Materiales Avanzados, Departamento de Química Inorgánica-Instituto Universitario de Materiales , Universidad de Alicante , Ctra. San Vicente-Alicante s/n , E-03690 San Vicente del Raspeig , Spain
| | | | | | | | - Joaquín Silvestre-Albero
- Laboratorio de Materiales Avanzados, Departamento de Química Inorgánica-Instituto Universitario de Materiales , Universidad de Alicante , Ctra. San Vicente-Alicante s/n , E-03690 San Vicente del Raspeig , Spain
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6
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Nitrogen and sulfur Co-doped microporous activated carbon macro-spheres for CO 2 capture. J Colloid Interface Sci 2018; 526:174-183. [PMID: 29734086 DOI: 10.1016/j.jcis.2018.04.101] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Revised: 04/21/2018] [Accepted: 04/26/2018] [Indexed: 12/22/2022]
Abstract
Millimeter-sized nitrogen and sulfur co-doped microporous activated carbon spheres (NSCSs) were first synthesized from poly(styrene-vinylimidazole-divinylbenzene) resin spheres through concentrated H2SO4 sulfonation, carbonization and KOH activation. Styrene (ST) and N-vinylimidazole (VIM) were carbon and nitrogen sources, while the sulfonic acid functional groups introduced by the simple concentrated sulfuric acid sulfonation worked simultaneously as cross-linking agent and sulfur source during the following thermal treatments. It was found that the surface chemistries, textural structures, and CO2 adsorption performances of the NSCSs were significantly affected by the addition of VIM. The NSCS-4-700 sample with a molar ratio of ST: VIM = 1: 0.75 showed the best CO2 uptake at different temperatures and pressures. An exhaustive adsorption evaluation indicated that CO2 sorption at low pressures originated from the synergistic effect of surface chemistry and micropores below 8.04 Å, while at the moderate pressure of 8.0 bar, CO2 uptake was dominated by the volume of micropores. The thermodynamics suggested the exothermic and orderly nature of the adsorption process, which was dominated by a physisorption mechanism. The high CO2 adsorption capacity, fast kinetic adsorption rate, and great regeneration stability of the nitrogen and sulfur co-doped activated carbon spheres indicated that the as-prepared carbon adsorbents were good candidates for large-scale CO2 capture.
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Affiliation(s)
- Yahui Sun
- Institute of Coal Chemistry, Chinese Academy of Sciences, 27 South Taoyuan Road, Taiyuan 030001, Shanxi, PR China; University of Chinese Academy of Sciences, 19A Yuquan Road, Beijing 100049, PR China
| | - Kaixi Li
- Institute of Coal Chemistry, Chinese Academy of Sciences, 27 South Taoyuan Road, Taiyuan 030001, Shanxi, PR China.
| | - Jianghong Zhao
- Engineering Research Center of Ministry of Education for Fine Chemicals, Shanxi University, 92 Wucheng Road, Taiyuan 030006, Shanxi, PR China.
| | - Jianlong Wang
- Institute of Coal Chemistry, Chinese Academy of Sciences, 27 South Taoyuan Road, Taiyuan 030001, Shanxi, PR China
| | - Nan Tang
- Institute of Coal Chemistry, Chinese Academy of Sciences, 27 South Taoyuan Road, Taiyuan 030001, Shanxi, PR China
| | - Dongdong Zhang
- Institute of Coal Chemistry, Chinese Academy of Sciences, 27 South Taoyuan Road, Taiyuan 030001, Shanxi, PR China; University of Chinese Academy of Sciences, 19A Yuquan Road, Beijing 100049, PR China
| | - Taotao Guan
- Institute of Coal Chemistry, Chinese Academy of Sciences, 27 South Taoyuan Road, Taiyuan 030001, Shanxi, PR China; University of Chinese Academy of Sciences, 19A Yuquan Road, Beijing 100049, PR China
| | - Zuer Jin
- Institute of Coal Chemistry, Chinese Academy of Sciences, 27 South Taoyuan Road, Taiyuan 030001, Shanxi, PR China; University of Chinese Academy of Sciences, 19A Yuquan Road, Beijing 100049, PR China
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7
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Glycerol Hydrogen-Bonding Network Dominates Structure and Collective Dynamics in a Deep Eutectic Solvent. J Phys Chem B 2018; 122:1261-1267. [PMID: 29336157 DOI: 10.1021/acs.jpcb.7b11224] [Citation(s) in RCA: 85] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The deep eutectic solvent glyceline formed by choline chloride and glycerol in 1:2 molar ratio is much less viscous compared to glycerol, which facilitates its use in many applications where high viscosity is undesirable. Despite the large difference in viscosity, we have found that the structural network of glyceline is completely defined by its glycerol constituent, which exhibits complex microscopic dynamic behavior, as expected from a highly correlated hydrogen-bonding network. Choline ions occupy interstitial voids in the glycerol network and show little structural or dynamic correlations with glycerol molecules. Despite the known higher long-range diffusivity of the smaller glycerol species in glyceline, in applications where localized dynamics is essential (e.g., in microporous media), the local transport and dynamic properties must be dominated by the relatively loosely bound choline ions.
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Affiliation(s)
- A Faraone
- NIST Center for Neutron Research, National Institute of Standards and Technology Gaithersburg , Gaithersburg, Maryland 20899, United States
| | - D V Wagle
- Department of Chemistry, University of Missouri-Columbia , Columbia, Missouri 65211, United States
| | - G A Baker
- Department of Chemistry, University of Missouri-Columbia , Columbia, Missouri 65211, United States
| | - E C Novak
- Department of Materials Science and Engineering, University of Tennessee , Knoxville, Tennessee 37996, United States
| | - M Ohl
- Jülich Center for Neutron Science, Forschungszentrum Jülich GmbH , Jülich 52425, Germany
| | - D Reuter
- Experimental Physics V, Center for Electronic Correlations and Magnetism, University of Augsburg , Augsburg 86159, Germany
| | - P Lunkenheimer
- Experimental Physics V, Center for Electronic Correlations and Magnetism, University of Augsburg , Augsburg 86159, Germany
| | - A Loidl
- Experimental Physics V, Center for Electronic Correlations and Magnetism, University of Augsburg , Augsburg 86159, Germany
| | - E Mamontov
- Neutron Scattering Division, Neutron Sciences Directorate, Oak Ridge National Laboratory , Oak Ridge, Tennessee 37831, United States
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Computational investigation of the microstructural characteristics and physical properties of glycerol-based deep eutectic solvents. J Mol Model 2017; 23:277. [DOI: 10.1007/s00894-017-3450-5] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2017] [Accepted: 08/28/2017] [Indexed: 02/05/2023]
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9
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Application of deep eutectic solvents in the extraction and separation of target compounds from various samples. J Sep Sci 2015; 38:1053-64. [DOI: 10.1002/jssc.201401347] [Citation(s) in RCA: 303] [Impact Index Per Article: 33.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2014] [Revised: 12/23/2014] [Accepted: 12/23/2014] [Indexed: 11/08/2022]
Affiliation(s)
- Baokun Tang
- Department of Chemistry and Chemical Engineering; Inha University; Incheon Korea
| | - Heng Zhang
- Department of Chemistry and Chemical Engineering; Inha University; Incheon Korea
| | - Kyung Ho Row
- Department of Chemistry and Chemical Engineering; Inha University; Incheon Korea
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