ORALS

SESSION: MoltenFriPM2-R1	Angell International Symposium on Molten Salt, Ionic & Glass-forming Liquids: Processing and Sustainability (7th Intl. Symp. on Molten Salt, Ionic & Glass-forming Liquids: Processing and Sustainability).
Fri Oct, 25 2019 / Room: Ambrosia A (77/RF)
Session Chairs: Rasmus Fehrmann; Masahiro Yoshizawa-Fujita; Session Monitor: TBA

17:10: [MoltenFriPM212]
Carbon Dioxide Capture and Transformation in Ionic Liquids
Jairton Dupont¹ ; Muhammad Qadir¹ ; Nathalia Simon¹ ; Marcileia Zanatta¹ ; ¹UFRGS, Porto Alegre, Brazil;
Paper Id: 151 [Abstract]

Despite a growing number of climate change mitigation policies and increasing investments associated with the capture and storage technologies for CO₂, the anthropogenic emissions of this gas are inexorably growing. [1] Hence, there is a growing interest in finding large-scale commercially viable end-use opportunities for CO₂ utilization. In the last decade, thermal, electrochemical, and photo-reduction of carbon dioxide to CO and/or hydrocarbon derivatives has grown into a blooming field of research. [2, 3] A simple combination of sunlight, aqueous solutions saturated with carbon dioxide, and appropriate photocatalysts may yield CO (reverse semi-combustion) and/or hydrocarbon derivatives (reverse combustion). [4, 5] Ionic liquids (ILs) are known to solubilize and, in some cases, to activate carbon dioxide by stabilizing radical/anionic species [6, 7] and hence, constitute an attractive material for CO₂ capture/reduction.[8] We will present the most recent aspects on CO₂ capture by ILs. This involves the formation of bicarbonate, and its hydrogenation promoted metal nanoparticles to hydrocarbons and formic acid, as well as orgono-photocatalytic and electrocatalytic reduction to carbon monoxide. The basic aspects of the multi-roles of ionic liquids in these transformations will be detailed based on experimental and theoretical evidence, particularly in IL aqueous solutions.

References:
[1] Lewis, R. J., Sr., Hazardous Chemicals, Desk Reference, 5th Ed, Wiley-Interscience, New York, (2002).
[2] Mac Dowell, N.; Fennell, P. S.; Shah, N.; Maitland, G. C., Nature Clim. Change 7 (2017) 243-249.
[3] J. L. White, M. F. Baruch, J. E. Pander Iii, Y. Hu, I. C. Fortmeyer, J. E. Park, T. Zhang, K. Liao, J. Gu, Y. Yan, T. W. Shaw, E. Abelev and A. B. Bocarsly, Chem. Rev., 115 (2015) 12888-12935.
[4] Y. Chen, G. Ji, S. Guo, B. Yu, Y. Zhao, Y. Wu, H. Zhang, Z. Liu, B. Han and Z. Liu, Green Chem., 19 (2017) 5777-5781.
[5] Rosen, B. A.; Salehi-Khojin, A.; Thorson, M. R.; Zhu, W.; Whipple, D. T.; Kenis, P. J.; Masel, R. I, Science. 334 (2011) 643-644.

SESSION: MoltenSatAM-R1	Angell International Symposium on Molten Salt, Ionic & Glass-forming Liquids: Processing and Sustainability (7th Intl. Symp. on Molten Salt, Ionic & Glass-forming Liquids: Processing and Sustainability).
Sat Oct, 26 2019 / Room: Ambrosia A (77/RF)
Session Chairs: Anders Riisager; Adam Clancy; Session Monitor: TBA

11:20: [MoltenSatAM01] Keynote
Capture and Transformation of Carbon Dioxide Confined in Ionic Liquids
Jairton Dupont¹ ; ¹UFRGS, Porto Alegre, Brazil;
Paper Id: 13 [Abstract]

Despite a growing number of climate change mitigation policies and increasing investments associated with the capture and storage technologies for CO₂, the anthropogenic emissions of this gas are inexorably growing. [1] Hence, there is a growing interest in finding large-scale commercially viable end-use opportunities for CO₂ utilization. In the last decade, thermal, electrochemical, and photo-reduction of carbon dioxide to CO and/or hydrocarbon derivatives has grown into a blooming field of research. [2, 3] A simple combination of sunlight, aqueous solutions saturated with carbon dioxide, and appropriate photocatalysts may yield CO (reverse semi-combustion) and/or hydrocarbon derivatives (reverse combustion). [4, 5] Ionic liquids (ILs) are known to solubilize and, in some cases, to activate carbon dioxide by stabilizing radical/anionic species [6, 7] and hence, constitute an attractive material for CO₂ capture/reduction.[8] We will present the most recent aspects on CO₂ capture by ILs. This involves the formation of bicarbonate, and its hydrogenation promoted metal nanoparticles to hydrocarbons and formic acid, as well as orgono-photocatalytic and electrocatalytic reduction to carbon monoxide. The basic aspects of the multi-roles of ionic liquids in these transformations will be detailed based on experimental and theoretical evidence, particularly in IL aqueous solutions.

References:
[1] N. Mac Dowell, P.S. Fennell, N. Shah, G.C. Maitland, The role of CO2 capture and utilization in mitigating climate change, Nature Clim. Change, 7 (2017) 243-249.
[2] T.A. Faunce, W. Lubitz, A.W. Rutherford, D. MacFarlane, G.F. Moore, P. Yang, D.G. Nocera, T.A. Moore, D.H. Gregory, S. Fukuzumi, K.B. Yoon, F.A. Armstrong, M.R. Wasielewski, S. Styring, Energy and environment policy case for a global project on artificial photosynthesis, Energ. Environ. Sci., 6 (2013) 695-698.
[3] K. Li, B. Peng, T. Peng, Recent Advances in Heterogeneous Photocatalytic CO2 Conversion to Solar Fuels, ACS Catal., 6 (2016) 7485-7527.
[4] J.L. White, M.F. Baruch, J.E. Pander Iii, Y. Hu, I.C. Fortmeyer, J.E. Park, T. Zhang, K. Liao, J. Gu, Y. Yan, T.W. Shaw, E. Abelev, A.B. Bocarsly, Light-Driven Heterogeneous Reduction of Carbon Dioxide: Photocatalysts and Photoelectrodes, Chem. Rev., 115 (2015) 12888-12935.
[5] S.N. Habisreutinger, L. Schmidt-Mende, J.K. Stolarczyk, Photocatalytic reduction of CO2 on TiO2 and other semiconductors, Angew. Chem. Int. Ed., 52 (2013) 7372-7408.
[6] B.A. Rosen, A. Salehi-Khojin, M.R. Thorson, W. Zhu, D.T. Whipple, P.J. Kenis, R.I. Masel, Ionic liquid-mediated selective conversion of CO(2) to CO at low overpotentials, Science, 334 (2011) 643-644.
[7] V. Strehmel, Radicals in Ionic Liquids, ChemPhysChem, 13 (2012) 1649-1663.
[8] S. Wang, X. Wang, Imidazolium Ionic Liquids, Imidazolylidene Heterocyclic Carbenes, and Zeolitic Imidazolate Frameworks for CO2 Capture and Photochemical Reduction, Angew. Chem. Int. Ed., 55 (2016) 2308-2320.