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Nikoshvili LZ, Shkerina KN, Bykov AV, Sidorov AI, Vasiliev AL, Sulman MG, Kiwi-Minsker L. Mono- and Bimetallic Nanoparticles Stabilized by an Aromatic Polymeric Network for a Suzuki Cross-Coupling Reaction. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 12:94. [PMID: 35010048 PMCID: PMC8746394 DOI: 10.3390/nano12010094] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Revised: 12/14/2021] [Accepted: 12/27/2021] [Indexed: 06/14/2023]
Abstract
This work addresses the Suzuki cross-coupling between 4-bromoanisole (BrAn) and phenylboronic acid (PBA) in an environmentally benign ethanol-water solvent catalysed by mono- (Pd) and bimetallic (PdAu, PdCu, PdZn) nanoparticles (NPs) stabilised within hyper-cross-linked polystyrene (HPS) bearing tertiary amino groups. Small Pd NPs of about 2 nm in diameters were formed and stabilized by HPS independently in the presence of other metals. High catalytic activity and complete conversion of BrAn was attained at low Pd loading. Introduction of Zn to the catalyst composition resulted in the formation of Pd/Zn/ZnO NPs, which demonstrated nearly double activity as compared to Pd/HPS. Bimetallic core-shell PdAu/HPS samples were 3-fold more active as compared to Pd/HPS. Both Pd/HPS and PdAu/HPS samples revealed promising stability confirmed by catalyst recycling in repeated reaction runs.
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Affiliation(s)
- Linda Zh. Nikoshvili
- Department of Biotechnology, Chemistry and Standardization, Tver State Technical University, Afanasy Nikitina Street 22, 170026 Tver, Russia; (K.N.S.); (A.V.B.); (A.I.S.); (M.G.S.)
| | - Kristina N. Shkerina
- Department of Biotechnology, Chemistry and Standardization, Tver State Technical University, Afanasy Nikitina Street 22, 170026 Tver, Russia; (K.N.S.); (A.V.B.); (A.I.S.); (M.G.S.)
| | - Alexey V. Bykov
- Department of Biotechnology, Chemistry and Standardization, Tver State Technical University, Afanasy Nikitina Street 22, 170026 Tver, Russia; (K.N.S.); (A.V.B.); (A.I.S.); (M.G.S.)
| | - Alexander I. Sidorov
- Department of Biotechnology, Chemistry and Standardization, Tver State Technical University, Afanasy Nikitina Street 22, 170026 Tver, Russia; (K.N.S.); (A.V.B.); (A.I.S.); (M.G.S.)
| | - Alexander L. Vasiliev
- National Research Centre “Kurchatov Institute”, Kurchatov Square 1, 123182 Moscow, Russia;
- Institute of Crystallography of the Russian Academy of Sciences, Leninsky Prospekt 59, 117333 Moscow, Russia
| | - Mikhail G. Sulman
- Department of Biotechnology, Chemistry and Standardization, Tver State Technical University, Afanasy Nikitina Street 22, 170026 Tver, Russia; (K.N.S.); (A.V.B.); (A.I.S.); (M.G.S.)
| | - Lioubov Kiwi-Minsker
- Regional Technological Centre, Tver State University, Zhelyabova Street 33, 170100 Tver, Russia
- Department of Basic Sciences, Ecole Polytechnique Fédérale de Lausanne, ISIC-FSB-EPFL, CH-1015 Lausanne, Switzerland
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Mokrushin AS, Nagornov IA, Averin AA, Simonenko NP, Simonenko TL, Simonenko EP, Sevastyanov VG, Kuznetsov NT. Effect of the Addition of Cerium Acetylacetonate on the Synthesis of ZnO Nanopowder. RUSS J INORG CHEM+ 2021. [DOI: 10.1134/s0036023621050119] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Ranjekar AM, Yadav GD. Steam Reforming of Methanol for Hydrogen Production: A Critical Analysis of Catalysis, Processes, and Scope. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.0c05041] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Apoorva M. Ranjekar
- Department of Chemical Engineering, Institute of Chemical Technology, Nathalal Parekh Marg, Matunga, Mumbai 400019, India
| | - Ganapati D. Yadav
- Department of Chemical Engineering, Institute of Chemical Technology, Nathalal Parekh Marg, Matunga, Mumbai 400019, India
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Steam Reforming of Methanol over Nanostructured Pt/TiO2 and Pt/CeO2 Catalysts for Fuel Cell Applications. Catalysts 2018. [DOI: 10.3390/catal8110544] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
A research and technological challenge for fuel processors integrated with High Temperature Polymer Electrolyte Membrane Fuel Cells (HT-PEMFCs), also known as Internal Reforming Methanol Fuel Cells (IRMFCs), operating at 200–220 °C, is the development of highly efficient catalysts, which will be able to selectively (low CO and other by-products formation) produce the required quantity of hydrogen at these temperatures. In this work, various amounts of platinum were dispersed via deposition-precipitation (DP) and impregnation (I) methods onto the surface of hydrothermally prepared ceria nanorods (CNRs) and titania nanotubes (TNTs). These nanostructured catalysts were evaluated in steam reforming of methanol process targeting the operation level of IRMFCs. The (DP) method resulted in highly (atomically) dispersed platinum-based catalysts, as confirmed with Scanning Transmission Electron Microscopy (STEM) analysis, with a mean particle size of less than 1 nm in the case of 0.35 wt.% Pt/CNRs catalyst. Ultra-fine dispersion of platinum species correlated with the presence of oxygen vacancies, together with the enrichment of CNRs surface with active metallic phase resulted in a highly active catalyst achieving at 220 °C a hydrogen production rate of 5500 cm3 min−1 per g of loaded platinum.
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