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Preparation and Investigation of Pd and Bimetallic Pd-Sn Nanocrystals on γ-Al2O3. CRYSTALS 2021. [DOI: 10.3390/cryst11040444] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
One of the key factors for producing highly dispersed controlled nanoparticles is the method used for metal deposition. The decomposition of metal-organic precursors is a good method for deposition of metal nanoparticles with very small sizes and narrow size distributions on the surface of various supports. The preparation process of Pd and bimetallic Pd-Sn nanoparticles supported onto γ-Al2O3 is considered. The samples were prepared by diffusional co-impregnation of the γ-Al2O3 support by using organometallic Pd(acac)2 and Sn(acac)2Cl2 precursors. To achieve the formation of Pd and bimetallic Pd-Sn nanoparticles on the support surface, the synthesized samples were then subjected to thermal decomposition under Ar (to decompose the organometallic bound to the surface while keeping the formed nanoparticles small) followed by an oxidation in O2 (to eliminate the organic compounds remaining on the surface) and a reduction in H2 (to reduce the nanoparticles oxidized during the previous step). A combination of methods (ICP-OES, TPR-H2, XPS, TEM/EDX) was used to compare the physical-chemical properties of the synthesized Pd and bimetallic Pd-Sn nanoparticles supported on the γ-Al2O3. The three samples exhibit narrow size distribution with a majority on nanoparticles between 3 and 5 nm. Local EDX measurements clearly showed that the nanoparticles are bimetallic with the expected chemical composition and the measured global composition by ICP-OES. The surface composition and electronic properties of Pd and Sn on the γ-Al2O3 support were investigated by XPS, in particular the chemical state of palladium and tin after each step of thermal decomposition treatments (oxidation, reduction) by the XPS method has been carried out. The reducibility of the prepared bimetallic nanoparticles was measured by hydrogen temperature programmed reduction (TPR-H2). The temperature programmed reduction TPR-H2 experiments have confirmed the existence of strong surface interactions between Pd and Sn, as evidenced by hydrogen spillover of Pd to Sn (Pd-assisted reduction of oxygen precovered Sn). These results lead us to propose a mechanism for the formation of the bimetallic nanoparticles.
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Kuznetsova SA, Brichkov AS, Lisitsa KV, Shamsutdinova AN, Kozik VV. Preparation and Properties of MoO3−TiO2−SiO2 Composites with Spherical Shape of Agglomerates. RUSS J APPL CHEM+ 2019. [DOI: 10.1134/s1070427219020010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Blokhina AS, Kurzina IA, Chukhlomina LN, Vitushkina OG, Smirnov AI, Bataev IA, Veselov SV, Vodyankina OV. Structural-phase and morphological characteristics of silver catalysts on modified ceramic supports for selective oxidation of alcohols. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2013. [DOI: 10.1134/s0036024413030060] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Eckhardt B, Ortel E, Polte J, Bernsmeier D, Görke O, Strasser P, Kraehnert R. Micelle-templated mesoporous films of magnesium carbonate and magnesium oxide. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2012; 24:3115-3119. [PMID: 22570260 DOI: 10.1002/adma.201104984] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2011] [Revised: 02/01/2012] [Indexed: 05/31/2023]
Affiliation(s)
- B Eckhardt
- Technische Universität Berlin, Institut für Chemie, Sekretariat TC3, Strasse des 17. Juni 124, 10623 Berlin, Germany
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Izaak TI, Vodyankina OV. Macroporous monolithic materials: synthesis, properties and application. RUSSIAN CHEMICAL REVIEWS 2009. [DOI: 10.1070/rc2009v078n01abeh003892] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Zazhigalov VA, Khalameida SV, Litvin NS, Bacherikova IV, Stoch J, Depero L. Effect of the mechanochemical treatment of a V2O5/MoO3 oxide mixture on its properties. KINETICS AND CATALYSIS 2008. [DOI: 10.1134/s0023158408050145] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Semenov VV, Cherepennikova NF, Melenskova NV, Kuznetsova OV, Bushuk BA, Bushuk SB, Kal’vinkovskaya YA, Duglas WE. Preparation of transparent sol-gel films containing europium, terbium, and ytterbium cations from 4-(3′-triethoxysilylpropylimino)-pent-2-en-2-ol. RUSS J COORD CHEM+ 2007. [DOI: 10.1134/s1070328407070111] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Khodakov AY, Chu W, Fongarland P. Advances in the Development of Novel Cobalt Fischer−Tropsch Catalysts for Synthesis of Long-Chain Hydrocarbons and Clean Fuels. Chem Rev 2007; 107:1692-744. [PMID: 17488058 DOI: 10.1021/cr050972v] [Citation(s) in RCA: 1175] [Impact Index Per Article: 69.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Andrei Y Khodakov
- Unité de Catalyse et de Chimie du Solide, UMR 8181 CNRS, USTL-ENSCL-ECLille, Bat C3, Cité scientifique, 59655 Villeneuve d'Ascq, France.
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Bourikas K, Kordulis C, Lycourghiotis A. The Role of the Liquid‐Solid Interface in the Preparation of Supported Catalysts. CATALYSIS REVIEWS-SCIENCE AND ENGINEERING 2006. [DOI: 10.1080/01614940600962321] [Citation(s) in RCA: 123] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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