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Groppe P, Reichstein J, Carl S, Cuadrado Collados C, Niebuur BJ, Zhang K, Apeleo Zubiri B, Libuda J, Kraus T, Retzer T, Thommes M, Spiecker E, Wintzheimer S, Mandel K. Catalyst Supraparticles: Tuning the Structure of Spray-Dried Pt/SiO 2 Supraparticles via Salt-Based Colloidal Manipulation to Control their Catalytic Performance. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2310813. [PMID: 38700050 DOI: 10.1002/smll.202310813] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Revised: 04/10/2024] [Indexed: 05/05/2024]
Abstract
The structure of supraparticles (SPs) is a key parameter for achieving advanced functionalities arising from the combination of different nanoparticle (NP) types in one hierarchical entity. However, whenever a droplet-assisted forced assembly approach is used, e.g., spray-drying, the achievable structure is limited by the inherent drying phenomena of the method. In particular, mixed NP dispersions of differently sized colloids are heavily affected by segregation during the assembly. Herein, the influence of the colloidal arrangement of Pt and SiO2 NPs within a single supraparticulate entity is investigated. A salt-based electrostatic manipulation approach of the utilized NPs is proposed to customize the structure of spray-dried Pt/SiO2 SPs. By this, size-dependent separation phenomena of NPs during solvent evaporation, that limit the catalytic performance in the reduction of 4-nitrophenol, are overcome by achieving even Pt NP distribution. Additionally, the textural properties (pore size and distribution) of the SiO2 pore framework are altered to improve the mass transfer within the material leading to increased catalytic activity. The suggested strategy demonstrates a powerful, material-independent, and universally applicable approach to deliberately customize the structure and functionality of multi-component SP systems. This opens up new ways of colloidal material combinations and structural designs in droplet-assisted forced assembly approaches like spray-drying.
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Affiliation(s)
- Philipp Groppe
- Department of Chemistry and Pharmacy, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Egerlandstraße 1, 91058, Erlangen, Germany
| | - Jakob Reichstein
- Department of Chemistry and Pharmacy, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Egerlandstraße 1, 91058, Erlangen, Germany
| | - Simon Carl
- Institute of Micro- and Nanostructure Research (IMN) & Center for Nanoanalysis and Electron Microscopy (CENEM), Interdisciplinary Center for Nanostructured Films (IZNF), Department of Materials Science and Engineering, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Cauerstrasse 3, 91058, Erlangen, Germany
| | - Carlos Cuadrado Collados
- Institute of Separation Science and Technology, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Egerlandstraße 3, 91058, Erlangen, Germany
| | - Bart-Jan Niebuur
- INM - Leibniz-Institute for New Materials, Campus D2 2, 66123, Saarbrücken, Germany
| | - Kailun Zhang
- Interface Research and Catalysis, Erlangen Center for Interface Research and Catalysis (ECRC), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Egerlandstraße 3, 91058, Erlangen, Germany
| | - Benjamin Apeleo Zubiri
- Institute of Micro- and Nanostructure Research (IMN) & Center for Nanoanalysis and Electron Microscopy (CENEM), Interdisciplinary Center for Nanostructured Films (IZNF), Department of Materials Science and Engineering, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Cauerstrasse 3, 91058, Erlangen, Germany
| | - Jörg Libuda
- Interface Research and Catalysis, Erlangen Center for Interface Research and Catalysis (ECRC), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Egerlandstraße 3, 91058, Erlangen, Germany
| | - Tobias Kraus
- INM - Leibniz-Institute for New Materials, Campus D2 2, 66123, Saarbrücken, Germany
- Colloid and Interface Chemistry, Saarland University, Campus D2 2, 66123, Saarbrücken, Germany
| | - Tanja Retzer
- Interface Research and Catalysis, Erlangen Center for Interface Research and Catalysis (ECRC), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Egerlandstraße 3, 91058, Erlangen, Germany
| | - Matthias Thommes
- Institute of Separation Science and Technology, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Egerlandstraße 3, 91058, Erlangen, Germany
| | - Erdmann Spiecker
- Institute of Micro- and Nanostructure Research (IMN) & Center for Nanoanalysis and Electron Microscopy (CENEM), Interdisciplinary Center for Nanostructured Films (IZNF), Department of Materials Science and Engineering, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Cauerstrasse 3, 91058, Erlangen, Germany
| | - Susanne Wintzheimer
- Department of Chemistry and Pharmacy, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Egerlandstraße 1, 91058, Erlangen, Germany
- Fraunhofer-Institute for Silicate Research ISC, Neunerplatz 2, 97082, Würzburg, Germany
| | - Karl Mandel
- Department of Chemistry and Pharmacy, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Egerlandstraße 1, 91058, Erlangen, Germany
- Fraunhofer-Institute for Silicate Research ISC, Neunerplatz 2, 97082, Würzburg, Germany
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Mikšovsky P, Rauchenwald K, Naghdi S, Rabl H, Eder D, Konegger T, Bica-Schröder K. Silicon Oxycarbide (SiOC)-Supported Ionic Liquids: Heterogeneous Catalysts for Cyclic Carbonate Formation. ACS SUSTAINABLE CHEMISTRY & ENGINEERING 2024; 12:1455-1467. [PMID: 38303909 PMCID: PMC10829049 DOI: 10.1021/acssuschemeng.3c05569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 11/23/2023] [Accepted: 12/20/2023] [Indexed: 02/03/2024]
Abstract
Silicon oxycarbides (SiOCs) impregnated with tetrabutylammonium halides (TBAX) were investigated as an alternative to silica-based supported ionic liquid phases for the production of bio-based cyclic carbonates derived from limonene and linseed oil. The support materials and the supported ionic liquid phases (SILPs) were characterized via Fourier transform infrared spectroscopy, thermogravimetric analysis, nitrogen adsorption, X-ray photoelectron spectroscopy, microscopy, and solvent adsorption. The silicon oxycarbide supports were pyrolyzed at 300-900 °C prior to being coated with different tetrabutylammonium halides and further used as heterogeneous catalysts for the formation of cyclic carbonates in batch mode. Excellent selectivities of 97-100% and yields of 53-62% were obtained with tetrabutylammonium chloride supported on the silicon oxycarbides. For comparison, the catalytic performance of commonly employed silica-supported ionic liquids was investigated under the same conditions. The silica-supported species triggered the formation of a diol as a byproduct, leading to a lower selectivity of 87% and a lower yield of 48%. Ultimately, macroporous monolithic SiOC-SILPs with suitable permeability characteristics (k1 = 10-11 m2) were produced via photopolymerization-assisted solidification templating and applied for the selective and continuous production of limonene carbonate with supercritical carbon dioxide as the reagent and sole solvent. Constant product output over 48 h without concurrent catalyst leaching was achieved.
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Affiliation(s)
- Philipp Mikšovsky
- Institute
of Applied Synthetic Chemistry, TU Wien, Getreidemarkt 9, 1060 Vienna, Austria
| | - Katharina Rauchenwald
- Institute
of Chemical Technologies and Analytics, TU Wien, Getreidemarkt 9, 1060 Vienna, Austria
| | - Shaghayegh Naghdi
- Institute
of Materials Chemistry, TU Wien, Getreidemarkt 9, 1060 Vienna, Austria
| | - Hannah Rabl
- Institute
of Materials Chemistry, TU Wien, Getreidemarkt 9, 1060 Vienna, Austria
| | - Dominik Eder
- Institute
of Materials Chemistry, TU Wien, Getreidemarkt 9, 1060 Vienna, Austria
| | - Thomas Konegger
- Institute
of Chemical Technologies and Analytics, TU Wien, Getreidemarkt 9, 1060 Vienna, Austria
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Bezkrovnyi O, Bruix A, Blaumeiser D, Piliai L, Schötz S, Bauer T, Khalakhan I, Skála T, Matvija P, Kraszkiewicz P, Pawlyta M, Vorokhta M, Matolínová I, Libuda J, Neyman KM, Kȩpiński L. Metal-Support Interaction and Charge Distribution in Ceria-Supported Au Particles Exposed to CO. CHEMISTRY OF MATERIALS : A PUBLICATION OF THE AMERICAN CHEMICAL SOCIETY 2022; 34:7916-7936. [PMID: 36117879 PMCID: PMC9476549 DOI: 10.1021/acs.chemmater.2c01659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Revised: 07/18/2022] [Indexed: 06/15/2023]
Abstract
Understanding how reaction conditions affect metal-support interactions in catalytic materials is one of the most challenging tasks in heterogeneous catalysis research. Metal nanoparticles and their supports often undergo changes in structure and oxidation state when exposed to reactants, hindering a straightforward understanding of the structure-activity relations using only ex situ or ultrahigh vacuum techniques. Overcoming these limitations, we explored the metal-support interaction between gold nanoparticles and ceria supports in ultrahigh vacuum and after exposure to CO. A combination of in situ methods (on powder and model Au/CeO2 samples) and theoretical calculations was applied to investigate the gold/ceria interface and its reactivity toward CO exposure. X-ray photoelectron spectroscopy measurements rationalized by first-principles calculations reveal a distinctly inhomogeneous charge distribution, with Au+ atoms in contact with the ceria substrate and neutral Au0 atoms at the surface of the Au nanoparticles. Exposure to CO partially reduces the ceria substrate, leading to electron transfer to the supported Au nanoparticles. Transferred electrons can delocalize among the neutral Au atoms of the particle or contribute to forming inert Auδ- atoms near oxygen vacancies at the ceria surface. This charge redistribution is consistent with the evolution of the vibrational frequencies of CO adsorbed on Au particles obtained using diffuse reflectance infrared Fourier transform spectroscopy.
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Affiliation(s)
- Oleksii Bezkrovnyi
- W.
Trzebiatowski Institute of Low Temperature and Structure Research, Polish Academy of Sciences, 50-422 Wroclaw, Poland
| | - Albert Bruix
- Departament
de Ciència de Materials i Química Física and
Institut de Química Teòrica i Computacional (IQTCUB), Universitat de Barcelona, 08028 Barcelona, Spain
| | - Dominik Blaumeiser
- Interface
Research and Catalysis, Erlangen Center for Interface Research and
Catalysis, Friedrich-Alexander Universität
Erlangen-Nürnberg, Egerlandstraße 3, 91058 Erlangen, Germany
| | - Lesia Piliai
- Department
of Surface and Plasma Science, Faculty of Mathematics and Physics, Charles University, V Holešovičkách 2, 18000, Prague 8, Czech Republic
| | - Simon Schötz
- Interface
Research and Catalysis, Erlangen Center for Interface Research and
Catalysis, Friedrich-Alexander Universität
Erlangen-Nürnberg, Egerlandstraße 3, 91058 Erlangen, Germany
| | - Tanja Bauer
- Interface
Research and Catalysis, Erlangen Center for Interface Research and
Catalysis, Friedrich-Alexander Universität
Erlangen-Nürnberg, Egerlandstraße 3, 91058 Erlangen, Germany
| | - Ivan Khalakhan
- Department
of Surface and Plasma Science, Faculty of Mathematics and Physics, Charles University, V Holešovičkách 2, 18000, Prague 8, Czech Republic
| | - Tomáš Skála
- Department
of Surface and Plasma Science, Faculty of Mathematics and Physics, Charles University, V Holešovičkách 2, 18000, Prague 8, Czech Republic
| | - Peter Matvija
- Department
of Surface and Plasma Science, Faculty of Mathematics and Physics, Charles University, V Holešovičkách 2, 18000, Prague 8, Czech Republic
| | - Piotr Kraszkiewicz
- W.
Trzebiatowski Institute of Low Temperature and Structure Research, Polish Academy of Sciences, 50-422 Wroclaw, Poland
| | - Mirosława Pawlyta
- Materials
Research Laboratory, Silesian University
of Technology, Gliwice 44-100, Poland
| | - Mykhailo Vorokhta
- Department
of Surface and Plasma Science, Faculty of Mathematics and Physics, Charles University, V Holešovičkách 2, 18000, Prague 8, Czech Republic
| | - Iva Matolínová
- Department
of Surface and Plasma Science, Faculty of Mathematics and Physics, Charles University, V Holešovičkách 2, 18000, Prague 8, Czech Republic
| | - Jörg Libuda
- Interface
Research and Catalysis, Erlangen Center for Interface Research and
Catalysis, Friedrich-Alexander Universität
Erlangen-Nürnberg, Egerlandstraße 3, 91058 Erlangen, Germany
| | - Konstantin M. Neyman
- Departament
de Ciència de Materials i Química Física and
Institut de Química Teòrica i Computacional (IQTCUB), Universitat de Barcelona, 08028 Barcelona, Spain
- ICREA
(Institució Catalana de Recerca i Estudis Avançats), 08010 Barcelona, Spain
| | - Leszek Kȩpiński
- W.
Trzebiatowski Institute of Low Temperature and Structure Research, Polish Academy of Sciences, 50-422 Wroclaw, Poland
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Wolf P, Wick CR, Mehler J, Blaumeiser D, Schötz S, Bauer T, Libuda J, Smith D, Smith AS, Haumann M. Improving the Performance of Supported Ionic Liquid Phase Catalysts for the Ultra-Low-Temperature Water Gas Shift Reaction Using Organic Salt Additives. ACS Catal 2022; 12:5661-5672. [PMID: 35572184 PMCID: PMC9088848 DOI: 10.1021/acscatal.1c05979] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Revised: 03/23/2022] [Indexed: 11/30/2022]
Abstract
The water gas shift reaction (WGSR) is catalyzed by supported ionic liquid phase (SILP) systems containing homogeneous Ru complexes dissolved in ionic liquids (ILs). These systems work at very low temperatures, that is, between 120 and 160 °C, as compared to >200 °C in the conventional process. To improve the performance of this ultra-low-temperature catalysis, we investigated the influence of various additives on the catalytic activity of these SILP systems. In particular, the application of methylene blue (MB) as an additive doubled the activity. Infrared spectroscopy measurements combined with density functional theory (DFT) calculations excluded a coordinative interaction of MB with the Ru complex. In contrast, state-of-the-art theoretical calculations elucidated the catalytic effect of the additives by non-covalent interactions. In particular, the additives can significantly lower the barrier of the rate-determining step of the reaction mechanism via formation of hydrogen bonds. The theoretical predictions, thereby, showed excellent agreement with the increase of experimental activity upon variation of the hydrogen bonding moieties in the additives investigated.
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Affiliation(s)
- Patrick Wolf
- Lehrstuhl für Chemische Reaktionstechnik (CRT), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Egerlandstr. 3, Erlangen 91058, Germany
- Forschungszentrum Jülich GmbH, Helmholtz Institute Erlangen-Nürnberg for Renewable Energy (IEK-11), Cauerstraße 1, Erlangen 91058, Germany
| | - Christian R. Wick
- Institute for Theoretical Physics and Interdisciplinary Center for Nanostructured Films (IZNF), Friedrich-Alexander-Universität Erlangen-Nürnberg, PULS Group, Cauerstraße 3, Erlangen 91058, Germany
- Competence Unit for Scientific Computing (CSC), Friedrich-Alexander-Universität Erlangen-Nürnberg, Martensstrasse 5a, Erlangen 91058, Germany
| | - Julian Mehler
- Lehrstuhl für Chemische Reaktionstechnik (CRT), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Egerlandstr. 3, Erlangen 91058, Germany
| | - Dominik Blaumeiser
- Interface Research and Catalysis, Erlangen Center for Interface Research and Catalysis, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstraße 3, Erlangen D-91058, Germany
| | - Simon Schötz
- Interface Research and Catalysis, Erlangen Center for Interface Research and Catalysis, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstraße 3, Erlangen D-91058, Germany
| | - Tanja Bauer
- Interface Research and Catalysis, Erlangen Center for Interface Research and Catalysis, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstraße 3, Erlangen D-91058, Germany
| | - Jörg Libuda
- Interface Research and Catalysis, Erlangen Center for Interface Research and Catalysis, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstraße 3, Erlangen D-91058, Germany
| | - David Smith
- Group of Computational Life Sciences, Department of Physical Chemistry, Rud̵er Bošković Institute, Bijenička 54 Zagreb 10000, Croatia
| | - Ana-Sunčana Smith
- Institute for Theoretical Physics and Interdisciplinary Center for Nanostructured Films (IZNF), Friedrich-Alexander-Universität Erlangen-Nürnberg, PULS Group, Cauerstraße 3, Erlangen 91058, Germany
- Group of Computational Life Sciences, Department of Physical Chemistry, Rud̵er Bošković Institute, Bijenička 54 Zagreb 10000, Croatia
| | - Marco Haumann
- Lehrstuhl für Chemische Reaktionstechnik (CRT), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Egerlandstr. 3, Erlangen 91058, Germany
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Wang Y, Zhang L, Zhang C, Xu X, Xie Y, Chen W, Wang J, Zhang R. Promoting the Generation of Active Oxygen over Ag-Modified Nanoflower-like α-MnO2 for Soot Oxidation: Experimental and DFT Studies. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c01308] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yuhang Wang
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, Henan, China
- School of Ecology and Environment, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Longzhu Zhang
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Changsen Zhang
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, Henan, China
- School of Ecology and Environment, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Xingmin Xu
- School of Forensic Medicine, Henan University of Technology, Luoyang 471000, Henan, China
| | - Yunyun Xie
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, Henan, China
- School of Ecology and Environment, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Wenjun Chen
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, Henan, China
- School of Ecology and Environment, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Jie Wang
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, Henan, China
- School of Ecology and Environment, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Ruiqin Zhang
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, Henan, China
- School of Ecology and Environment, Zhengzhou University, Zhengzhou 450001, Henan, China
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