ORCID Profile
0000-0002-7882-5999
Current Organisation
KU Leuven
Does something not look right? The information on this page has been harvested from data sources that may not be up to date. We continue to work with information providers to improve coverage and quality. To report an issue, use the Feedback Form.
Publisher: Elsevier BV
Date: 07-2019
Publisher: American Chemical Society (ACS)
Date: 11-01-2016
Publisher: American Chemical Society (ACS)
Date: 05-12-2022
Publisher: Elsevier BV
Date: 2017
Publisher: Elsevier BV
Date: 11-2021
Publisher: Elsevier BV
Date: 04-2017
Publisher: Wiley
Date: 09-02-2021
DOI: 10.1002/AIC.17219
Abstract: The synergic solvent extraction system of tri‐ n ‐butyl phosphate (TBP) and FeCl 3 (or ionic liquids, ILs) has been extensively studied for selective extraction of Li from Mg‐containing brines. However, Cyanex 923 (C923), which extracts many metals stronger than TBP, has not yet been examined for Li/Mg separation. Here, we report on the unexpected observation that the C923/FeCl 3 system has opposite Li/Mg selectivity compared to the TBP/FeCl 3 system. Detailed investigations show that the opposite selectivity of the C923/FeCl 3 (or IL) system is due to three factors: (1) the strong extraction of Fe by C923 leads to a low concentration of [FeCl 4 ] − in the system, which is essential for Li extraction (2) C923 in combination with an IL extracts Mg strongly by an ion‐pair mechanism (3) most importantly, C923 extracts Mg by solvation, resulting in an insufficient concentration of C923 for Li extraction. The unexpected poor Li/Mg selectivity of C923 highlights the irreplaceable role of TBP in the selective recovery of Li.
Publisher: American Chemical Society (ACS)
Date: 20-04-2022
Publisher: American Chemical Society (ACS)
Date: 03-06-2021
Publisher: Elsevier BV
Date: 08-2017
Publisher: Elsevier BV
Date: 2011
Publisher: American Chemical Society (ACS)
Date: 05-08-2019
Publisher: Elsevier BV
Date: 02-2017
Publisher: Informa UK Limited
Date: 21-04-2019
Publisher: Springer Science and Business Media LLC
Date: 09-02-2021
Publisher: Elsevier BV
Date: 02-2016
Publisher: Elsevier BV
Date: 02-2016
Publisher: Wiley
Date: 07-10-2021
Abstract: A cooperative OSDA strategy is demonstrated, leading to novel high‐silica FAU zeolites with a large potential for disruptive acid catalysis. In bottom‐up synthesis, the symbiosis of choline ion (Ch + ) and 15‐crown‐5 (CE) was evidenced, in a form of full occupation of the sodalite (sod) cages with the trans Ch + conformer, induced by the CE presence. CE itself occupied the supercages along with additional gauche Ch + , but in synthesis without CE, no trans was found. The cooperation, and thus the fraction of trans Ch + , was closely related to the Si/Al ratio, a key measure for FAU stability and acidity. As such, a bottom‐up handle for lowering the Al‐content of FAU and tuning its acid site distribution is shown. A mechanistic study demonstrated that forming sod cages with trans Ch + is key to the nucleation of high‐silica FAU zeolites. The materials showed superior performances to commercial FAU zeolites and those synthesized without cooperation, in the catalytic degradation of polyethylene.
Publisher: American Chemical Society (ACS)
Date: 03-03-2016
Publisher: Elsevier BV
Date: 08-2018
Publisher: American Chemical Society (ACS)
Date: 22-01-2020
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/C9GC02983D
Abstract: Copper is extracted from sulfidic ores by a leaching-electrodeposition system, thereby producing metallic copper and regenerating the oxidizing agent FeCl 3 .
Publisher: Elsevier BV
Date: 07-2015
Publisher: Elsevier BV
Date: 2021
Publisher: Elsevier BV
Date: 11-2020
Publisher: No publisher found
Publisher: Informa UK Limited
Date: 18-02-2016
Publisher: Informa UK Limited
Date: 12-2014
Publisher: American Chemical Society (ACS)
Date: 19-11-2021
Publisher: SAGE Publications
Date: 2012
DOI: 10.2190/AF.22.3.E
Publisher: Wiley
Date: 24-06-2019
Publisher: American Chemical Society (ACS)
Date: 19-06-2014
DOI: 10.1021/JE500204V
Publisher: Wiley
Date: 07-10-2021
Abstract: A cooperative OSDA strategy is demonstrated, leading to novel high‐silica FAU zeolites with a large potential for disruptive acid catalysis. In bottom‐up synthesis, the symbiosis of choline ion (Ch + ) and 15‐crown‐5 (CE) was evidenced, in a form of full occupation of the sodalite (sod) cages with the trans Ch + conformer, induced by the CE presence. CE itself occupied the supercages along with additional gauche Ch + , but in synthesis without CE, no trans was found. The cooperation, and thus the fraction of trans Ch + , was closely related to the Si/Al ratio, a key measure for FAU stability and acidity. As such, a bottom‐up handle for lowering the Al‐content of FAU and tuning its acid site distribution is shown. A mechanistic study demonstrated that forming sod cages with trans Ch + is key to the nucleation of high‐silica FAU zeolites. The materials showed superior performances to commercial FAU zeolites and those synthesized without cooperation, in the catalytic degradation of polyethylene.
Publisher: American Chemical Society (ACS)
Date: 31-10-2019
Publisher: Wiley
Date: 07-07-2020
DOI: 10.1002/AIC.16545
Publisher: Wiley
Date: 04-02-2021
DOI: 10.1002/AIC.17213
Abstract: Several molecular polar solvents have been used as solvents of the more polar phase in the solvent extraction (SX) of metals. However, the use of hydrophilic ionic liquids (ILs) as solvents has seldomly been explored for this application. Here, the hydrophilic IL ethylammonium nitrate (EAN), has been utilized as a polar solvent in SX of transition metal nitrates by tri‐ n ‐butyl phosphate (TBP). It was found that the extraction from EAN is considerably stronger than that from a range of molecular polar solvents. The main species of Co(II) and Fe(III) in EAN are likely [Co(NO 3 ) 4 ] 2− and [Fe(NO 3 ) 4 ] − , respectively. The extracted species are likely Fe(TBP) 3 (NO 3 ) 3 and a mixture of Co(TBP) 2 (NO 3 ) 2 and Co(TBP) 3 (NO 3 ) 2 . The addition of H 2 O or LiCl to EAN reduces the extraction because the metal cations coordinate to water molecules and chloride ions stronger than to nitrate ions. This study highlights the potential of using hydrophilic ILs to enhance SX of metals.
Publisher: Wiley
Date: 21-04-2020
DOI: 10.1002/AIC.16246
Publisher: American Chemical Society (ACS)
Date: 24-12-2019
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C6TB03020C
Abstract: Gold-based silica nanocomposites with hierarchically porous structure, as well as excellent photothermal effect, have shown great potentials in biomedical applications.
Publisher: American Chemical Society (ACS)
Date: 21-06-2019
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C6RA27840J
Abstract: The band structure and photocatalytic activity of RE (La, Ce, Pr or Nd) mono-doped and RE–N co-doped SrTiO 3 for band gap reduction are studied systematically using first principles calculations.
Publisher: American Chemical Society (ACS)
Date: 17-04-2015
Location: Australia
No related grants have been discovered for Zheng Li.