ORALS

SESSION: MoltenMonAM-R3	Fehrmann International Symposium on Sustainable Molten Salt and Ionic Liquid Processing (6th Intl. Symp. on Sustainable Molten Salt and Ionic Liquid Processing)
Mon Nov, 5 2018 / Room: Bossa (150/3rd)
Session Chairs: Anders Riisager; Session Monitor: TBA

12:10: [MoltenMonAM03] Keynote
Spectroscopy and Catalysis: The Operando Methodology and Reaction Monitoring, Tools to Understand Structure-Activity Relationships
Miguel Banares¹ ; Raquel Portela¹ ; Mariví Martinez Huerta¹ ; Pedro Avila¹ ; Susana Pérez Ferreras¹ ; Søren Birk Rasmussen¹ ; Vanesa Calvino Casilda² ; Alba E. Diaz Alvarez¹ ; Ines Reyero¹ ; Katarzyna Stawicka³ ; Maciej Trejda³ ; Maria Ziolek³ ; Olga Guerrero⁴ ; Marco Daturi⁵ ; Philippe Bazin⁵ ; Guillaume Clet⁵ ; Zhenyou Gui⁶ ; Nanette Zahrtmann⁷ ; Shunmugavel Saravana⁶ ; Zhiwen Qi⁸ ; Anders Riisager⁷ ; Eduardo J. García Suárez⁷ ; ¹Institute for Catalysis and Petroleum Chemistry (CSIC), Madrid, Spain; ²ETS de Ingenieros Industriales, UNED, Madrid, Spain; ³Adam Mickiewicz University, Poznan, Poland; ⁴University of Malaga, Malaga, Spain; ⁵LCS University of Caen Normandy, Caen, France; ⁶DTU Chemistry, Lyngby, Denmark; ⁷DTU Chemistry, Kgs. Lyngby, Denmark; ⁸East China University of Science and Technology, Shanghai, China;
Paper Id: 403 [Abstract]

Spectroscopy is an enabling tool to understand structure-reactivity relationships, that can be applied from predicting toxicity of nanomaterials to engineer better catalytic processes. Operando methodology analyzes both, the catalyst structure and its activity/selectivity simultaneously in a cell that is fit for in situ spectroscopy and performs like a catalytic reactor; correlating structure changes with catalytic performance. Some representative works illustrate this. 1-3 We will present a study on the role of additives, support, coverage, hydration and reaction conditions on the states of supported vanadium and its relevance for catalytic reaction and reducibility. This is applied to assess the molecular basis for activation/deactivation and the nature of the catalyst active site for oxide reduction, alkane oxidative dehydrogenation, ammoxidation and for environmental selective catalytic reduction of NOx. We will also illustrate the capacity of real time spectroscopy to understand reaction mechanism for liquid phase reactions,4 like the role of Brønsted Acid Sites (BAS) vs. that of Lewis Acid Sites (LAS) for the acetalization of glycerol into solketal. Mesoporous cellular foams modified to contain exclusively BAS, LAS and combinations thereof illustrate the role of BAS.4 This relevance led us to use novel Brønsted acid ionic liquids (BAILs).5 The transversal nature of the operando approach places it at the junction between fundamental catalytic chemistry and applied chemical engineering. This work is supported by European Commission BIORIMA GA 760928 and Spanish Ministry RIEN2O, CTM2017-82335-R.

References:
[1] Calvino-Casilda, V.; Stawicka, K.; Trejda, M.; Ziolek, M.; Banares, M. A. Real-Time Raman Monitoring and Control of the Catalytic Acetalization of Glycerol with Acetone over Modified Mesoporous Cellular Foams. J. Phys. Chem. C 2014, 118 (20).
[2] Stawicka, K.; Díaz-Álvarez, A. E.; Calvino-Casilda, V.; Trejda, M.; Banares, M. A.; Ziolek, M. The Role of Brønsted and Lewis Acid Sites in Acetalization of Glycerol over Modified Mesoporous Cellular Foams. J. Phys. Chem. C 2016, 120 (30), 16699–16711.
[3] Gui, Z.; Zahrtmann, N.; Saravanamurugan, S.; Reyero, I.; Qi, Z.; Banares, M. A.; Riisager, A.; Garcia-Suarez, E. J. Brønsted Acid Ionic Liquids (BAILs) as Efficient and Recyclable Catalysts in the Conversion of Glycerol to Solketal at Room Temperature. ChemistrySelect 2016, 1 (18).