1
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Zheng X, Li Y, Li W, Pei X, Ye D. Chitosan derived efficient and stable Pd nano-catalyst for high efficiency hydrogenation. Int J Biol Macromol 2023; 241:124615. [PMID: 37119901 DOI: 10.1016/j.ijbiomac.2023.124615] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 04/16/2023] [Accepted: 04/22/2023] [Indexed: 05/01/2023]
Abstract
The design and development of green and efficient supported catalysts is the frontier direction in the field of green synthesis, which conforms to the strategic concept of green sustainable chemistry and "carbon neutrality". Herein, we used a renewable resource chitosan (CS) derived from seafood wastes of chitin as carriers to design two different chitosan-supported palladium (Pd) nano-catalysts through different activation methods. The Pd particles were firmly and uniformly dispersed on the chitosan microspheres due to the interconnected nanoporous structure and functional groups of chitosan, proved by diverse characterizations. The chitosan supported catalysts (Pd@CS) was applied to hydrogenation of 4-nitrophenol, which showed competitive catalytic activity compared to commercial Pd/C, un-supported nano-Pd and Pd(OAc)2 catalysts, as well as excellent catalytic activity, good reusability, long-life and broad applicability in selective hydrogenation of aromatic aldehydes, suggesting potential of applications in green industrial catalysis.
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Affiliation(s)
- Xingli Zheng
- School of Materials and Architectural Engineering, Guizhou Normal University, Guiyang 550025, China; College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Yan Li
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Wendian Li
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Xianglin Pei
- School of Materials and Architectural Engineering, Guizhou Normal University, Guiyang 550025, China; College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China; Guizhou Key Laboratory of Inorganic Nonmetallic Functional Materials, Guizhou Normal University, Guiyang 550025, China.
| | - Dongdong Ye
- College of Light-Textile Engineering and Art, Anhui Agricultural University, Hefei 230036, China.
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2
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He L, Wang Y, Wang C, Liu Z, Xie Z. Pyridinic nitrogen dominated doping on Pd/carbon catalysts for enhanced hydrogenation performance. Front Chem 2022; 10:1046058. [PMID: 36405331 PMCID: PMC9667039 DOI: 10.3389/fchem.2022.1046058] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Accepted: 10/10/2022] [Indexed: 09/15/2023] Open
Abstract
The hydrogenation of 4-carboxylbenzaldehyde over Pd catalysts is a crucial process during the production of pure terephthalic acid. Herein, ZIF-8 derived carbon materials (NC) with adjustable N types were synthesized and used as the supports of Pd catalysts. Pd supported on NC with 50.5% of pyridinic N exhibited best hydrogenation activity with a TOF value of 4.1 min-1. The microstructures of NC support and electronic structures of Pd in Pd/NC were investigated by techniques such as XRD, N2 physisorption, XPS, H2-O2 titration and TEM. The nitrogen species in CN surface not only can adjust chemical state and dispersion of Pd nanoparticles (NPs), but also promote the adsorption and activation capability of H2 molecular. Besides, the ratio of Pd0/Pd2+ and Pd dispersion were closely correlated with pyridinic nitrogen content. The improvement in hydrogenation activity and stability of Pd/CN catalyst in relative to Pd/C were ascribed to the synergistic effect of pyridinic nitrogen and active site Pd0.
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Affiliation(s)
- Limin He
- State Key Laboratory of Green Chemical Engineering and Industrial Catalysis, Shanghai Research Institute of Petrochemical Technology, SINOPEC Corp, Shanghai, China
| | - Yangdong Wang
- State Key Laboratory of Green Chemical Engineering and Industrial Catalysis, Shanghai Research Institute of Petrochemical Technology, SINOPEC Corp, Shanghai, China
| | - Can Wang
- State Key Laboratory of Green Chemical Engineering and Industrial Catalysis, Shanghai Research Institute of Petrochemical Technology, SINOPEC Corp, Shanghai, China
| | - Zhicheng Liu
- State Key Laboratory of Green Chemical Engineering and Industrial Catalysis, Shanghai Research Institute of Petrochemical Technology, SINOPEC Corp, Shanghai, China
| | - Zaiku Xie
- China Petrochemical Corporation (SINOPEC Group), Beijing, China
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3
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Hayashida H, Yamauchi N, Nakashima K, Kobayashi Y. Controlled oxidation of metallic copper nanoparticles by a silica coating. INORG NANO-MET CHEM 2022. [DOI: 10.1080/24701556.2022.2034015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Hikaru Hayashida
- Department of Materials Science and Engineering, Graduate School of Science and Engineering, Ibaraki University, Hitachi, Japan
| | - Noriko Yamauchi
- Department of Materials Science and Engineering, Graduate School of Science and Engineering, Ibaraki University, Hitachi, Japan
| | - Kouichi Nakashima
- Department of Materials Science and Engineering, Graduate School of Science and Engineering, Ibaraki University, Hitachi, Japan
| | - Yoshio Kobayashi
- Department of Materials Science and Engineering, Graduate School of Science and Engineering, Ibaraki University, Hitachi, Japan
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4
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He L, Wang Y, Gao H, Liu Z, Xie Z. Nitrogen doped carbon for Pd-catalyzed hydropurification of crude terephthalic acid: roles of nitrogen species. RSC Adv 2021; 11:33646-33652. [PMID: 35497553 PMCID: PMC9042280 DOI: 10.1039/d1ra06479g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Accepted: 09/28/2021] [Indexed: 11/21/2022] Open
Abstract
The purification of crude terephthalic acid was performed by the hydrogenation of 4-carboxybenzaldehyde (4-CBA) over activated carbon (AC) supported Pd catalysts in industry. However, traditional Pd/AC catalysts usually suffer from low hydrogenation activity and poor thermal stability. Herein, nitrogen was incorporated into AC via a simple hydrothermal treatment of AC with urea as the nitrogen resource. The N doped AC contained pyridinic N, pyrrolic N, graphitic N and oxidized N. Wide characterizations revealed that N doping not only effectively improved the dispersion of Pd NPs but also increased the proportion of Pd0. In addition, N doping also enhanced the dissociative adsorption capacity of molecular hydrogen. More importantly, the resistance to sintering of Pd NPs was efficiently suppressed after N doping. As a result, N doped AC supported Pd showed both higher activity and better thermal stability than the N-free one. Pd on N doped activated carbon exhibited increased activity and stability in 4-CBA hydrogenation relative to Pd catalysts without N doping. Higher dispersion of Pd0 and facile activation of H2 accounted for the better activity of Pd/NC.![]()
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Affiliation(s)
- Limin He
- State Key Laboratory of Green Chemical Engineering and Industrial Catalysis, Shanghai Research Institute of Petrochemical Technology, SINOPEC Corp. Shanghai 201208 China
| | - Yangdong Wang
- State Key Laboratory of Green Chemical Engineering and Industrial Catalysis, Shanghai Research Institute of Petrochemical Technology, SINOPEC Corp. Shanghai 201208 China
| | - Huanxin Gao
- State Key Laboratory of Green Chemical Engineering and Industrial Catalysis, Shanghai Research Institute of Petrochemical Technology, SINOPEC Corp. Shanghai 201208 China
| | - Zhicheng Liu
- State Key Laboratory of Green Chemical Engineering and Industrial Catalysis, Shanghai Research Institute of Petrochemical Technology, SINOPEC Corp. Shanghai 201208 China
| | - Zaiku Xie
- China Petrochemical Corporation (SINOPEC Group) Beijing 100728 China
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5
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Gao X, Zhang H, Guan J, Shi D, Wu Q, Chen KC, Zhang Y, Feng C, Zhao Y, Jiao Q, Li H. Pomegranate-like Core-Shell Ni-NSs@MSNSs as a High Activity, Good Stability, Rapid Magnetic Separation, and Multiple Recyclability Nanocatalyst for DCPD Hydrogenation. ACS OMEGA 2021; 6:11570-11584. [PMID: 34056313 PMCID: PMC8153983 DOI: 10.1021/acsomega.1c00779] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Accepted: 04/12/2021] [Indexed: 05/31/2023]
Abstract
A novel pomegranate-like Ni-NSs@MSNSs nanocatalyst was successfully synthesized via a modified Stöber method, and its application in the hydrogenation of dicyclopentadiene (DCPD) was firstly reported. The Ni-NSs@MSNSs possessed a high specific area (658 m2/g) and mesoporous structure (1.7-3.3 nm). The reaction of hydrogenation of DCPD to endo-tetrahydrodicyclopentadiene (endo-THDCPD) was used to evaluate the catalytic performance of the prepared materials. The distinctive pomegranate-like Ni-NSs@MSNSs core-shell nanocomposite exhibited superior catalytic activity (TOF = 106.0 h-1 and STY = 112.7 g·L-1·h-1) and selectivity (98.9%) than conventional Ni-based catalysts (experimental conditions: Ni/DCPD/cyclohexane = 1/100/1000 (w/w), 150 °C, and 2.5 MPa). Moreover, the Ni-NSs@MSNSs nanocatalyst could be rapidly and conveniently recycled by magnetic separation without appreciable loss. The Ni-NSs@MSNSs also exhibited excellent thermal stability (≥750 °C) and good recycling performance (without an activity and selectivity decrease in four runs). The superior application performance of the Ni-NSs@MSNSs nanocatalyst was mainly owing to its unique pomegranate-like structure and core-shell synergistic confinement effect.
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Affiliation(s)
- Xia Gao
- Beijing
Key Laboratory for Chemical Power Source and Green Catalysis, School
of Chemistry and Chemical Engineering, Beijing
Institute of Technology, 100081 Beijing, China
| | - Huanhuan Zhang
- Beijing
Key Laboratory for Chemical Power Source and Green Catalysis, School
of Chemistry and Chemical Engineering, Beijing
Institute of Technology, 100081 Beijing, China
| | - Jingying Guan
- Beijing
Key Laboratory for Chemical Power Source and Green Catalysis, School
of Chemistry and Chemical Engineering, Beijing
Institute of Technology, 100081 Beijing, China
| | - Daxin Shi
- Beijing
Key Laboratory for Chemical Power Source and Green Catalysis, School
of Chemistry and Chemical Engineering, Beijing
Institute of Technology, 100081 Beijing, China
| | - Qin Wu
- Beijing
Key Laboratory for Chemical Power Source and Green Catalysis, School
of Chemistry and Chemical Engineering, Beijing
Institute of Technology, 100081 Beijing, China
| | - Kang-cheng Chen
- Beijing
Key Laboratory for Chemical Power Source and Green Catalysis, School
of Chemistry and Chemical Engineering, Beijing
Institute of Technology, 100081 Beijing, China
| | - Yaoyuan Zhang
- Beijing
Key Laboratory for Chemical Power Source and Green Catalysis, School
of Chemistry and Chemical Engineering, Beijing
Institute of Technology, 100081 Beijing, China
| | - Caihong Feng
- Beijing
Key Laboratory for Chemical Power Source and Green Catalysis, School
of Chemistry and Chemical Engineering, Beijing
Institute of Technology, 100081 Beijing, China
| | - Yun Zhao
- Beijing
Key Laboratory for Chemical Power Source and Green Catalysis, School
of Chemistry and Chemical Engineering, Beijing
Institute of Technology, 100081 Beijing, China
| | - Qingze Jiao
- Beijing
Key Laboratory for Chemical Power Source and Green Catalysis, School
of Chemistry and Chemical Engineering, Beijing
Institute of Technology, 100081 Beijing, China
- School
of Chemical Engineering and Materials Science, Beijing Institute of Technology, 519085 Zhuhai, China
| | - Hansheng Li
- Beijing
Key Laboratory for Chemical Power Source and Green Catalysis, School
of Chemistry and Chemical Engineering, Beijing
Institute of Technology, 100081 Beijing, China
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6
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Otor HO, Steiner JB, García-Sancho C, Alba-Rubio AC. Encapsulation Methods for Control of Catalyst Deactivation: A Review. ACS Catal 2020. [DOI: 10.1021/acscatal.0c01569] [Citation(s) in RCA: 62] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Hope O. Otor
- Department of Chemical Engineering, The University of Toledo, Toledo, Ohio 43606, United States
| | - Joshua B. Steiner
- Department of Chemical Engineering, The University of Toledo, Toledo, Ohio 43606, United States
| | - Cristina García-Sancho
- Departamento de Quı́mica Inorgánica, Cristalografı́a y Mineralogı́a, Facultad de Ciencias, Universidad de Málaga, Campus de Teatinos, 29071 Málaga, Spain
| | - Ana C. Alba-Rubio
- Department of Chemical Engineering, The University of Toledo, Toledo, Ohio 43606, United States
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7
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Wintzheimer S, Miller F, Prieschl J, Retter M, Mandel K. Supraparticles with silica protection for redispersible, calcined nanoparticles. NANOSCALE ADVANCES 2019; 1:4277-4281. [PMID: 36134422 PMCID: PMC9417870 DOI: 10.1039/c9na00442d] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Accepted: 09/26/2019] [Indexed: 05/14/2023]
Abstract
Calcination of nanoparticles is always accompanied by undesired sintering. A calcination route preventing hard-agglomeration to bulk lumps, which is transferable to almost any kind of metal oxide nanoparticle, is developed by surrounding targeted nanoparticles by silica nanoparticles within a nanostructured microparticle. After calcination, the desired nanoparticles are regained as a monodisperse sol via silica dissolution.
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Affiliation(s)
- Susanne Wintzheimer
- University Würzburg, Chair of Chemical Technology of Materials Synthesis Röntgenring 11 97070 Würzburg Germany
| | - Franziska Miller
- University Würzburg, Chair of Chemical Technology of Materials Synthesis Röntgenring 11 97070 Würzburg Germany
| | - Johannes Prieschl
- University Würzburg, Chair of Chemical Technology of Materials Synthesis Röntgenring 11 97070 Würzburg Germany
| | - Marion Retter
- Translational Center Regenerative Therapies, TLZ-RT, Fraunhofer Institute for Silicate Research, ISC Neunerplatz 2 97082 Würzburg Germany
| | - Karl Mandel
- University Würzburg, Chair of Chemical Technology of Materials Synthesis Röntgenring 11 97070 Würzburg Germany
- Fraunhofer Institute for Silicate Research, ISC Neunerplatz 2 97082 Würzburg Germany
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8
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Baaziz W, Bahri M, Gay AS, Chaumonnot A, Uzio D, Valette S, Hirlimann C, Ersen O. Thermal behavior of Pd@SiO 2 nanostructures in various gas environments: a combined 3D and in situ TEM approach. NANOSCALE 2018; 10:20178-20188. [PMID: 30362491 DOI: 10.1039/c8nr06951d] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The thermal stability of core-shell Pd@SiO2 nanostructures was for the first time monitored by using in situ Environmental Transmission Electron Microscopy (E-TEM) at atmospheric pressure coupled with Electron Tomography (ET) on the same particles. The core Pd particles, with octahedral or icosahedral original shapes, were followed during thermal heating under gas at atmospheric pressure. In the first step, their morphology/faceting evolution was investigated in a reductive H2 environment up to 400 °C by electron tomography performed on the same particles before and after the in situ treatment. As a result, we observed the formation of small Pd particles inside the silica shell due to the thermally activated diffusion from the core particle. A strong dependence of the shape and faceting transformations on the initial structure of the particles was evidenced. The octahedral monocrystalline NPs were found to be less stable than the icosahedral ones; in the first case, the Pd diffusion from the core towards the silica external surface led to a progressive decrease of the particle size. The icosahedral polycrystalline NPs do not exhibit a morphology/faceting change, as in this case the atom diffusion within the particle is favored against diffusion towards the silica shell, due to a high amount of crystallographic defects in the particles. In the second part, the Pd@SiO2 NPs behavior at high temperatures (up to 1000 °C) was investigated under reductive or oxidative conditions; it was found to be strongly related to the thermal evolution of the silica shell: (1) under H2, the silica is densified and loses its porous structure leading to a final state with Pd core NPs encapsulated in the shell; (2) under air, the silica porosity is maintained and the increase of the temperature leads to an enhancement of the diffusion mechanism from the core towards the external surface of the silica; as a result, at 850 °C all the Pd atoms are expelled outside the silica shell.
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Affiliation(s)
- Walid Baaziz
- Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), UMR 7504, CNRS - Université de Strasbourg, 23 rue du Lœss BP 43, 67034 Strasbourg cedex 2, France.
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9
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Wang X, Wang J, Ding Z, Zhu N, Wang F, Cheng K, Chen Q, Song H. UV-Assisted Fabrication of Reduced Graphene Oxide Doped SiO2@TiO2 Nanocomposites as Efficient Photocatalyst for Photodegradation of Rhodamine B. RUSS J APPL CHEM+ 2018. [DOI: 10.1134/s1070427218050063] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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10
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Liu J, Du W, Li Z, Yang A. Preparation of TiO2 Nanotube Supported Pd for the Hydrogenation of 4-carboxy-benzaldehyde. Catal Letters 2018. [DOI: 10.1007/s10562-018-2469-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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11
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Aqueous-Phase Hydrogenolysis of Glycerol over Re Promoted Ru Catalysts Encapuslated in Porous Silica Nanoparticles. NANOMATERIALS 2018. [PMID: 29522432 PMCID: PMC5869644 DOI: 10.3390/nano8030153] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Activity improvement of Ru-based catalysts is needed for efficient production of valuable chemicals from glycerol hydrogenolysis. In this work, a series of Re promoted Ru catalysts encapuslated in porous silica nanoparticles (denoted as Re-Ru@SiO2) were prepared by coating silica onto the surface of chemically reduced Ru-polyvinylpyrrolidone colloids, and were used to catalyze the conversion of glycerol to diols and alcohols in water. X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), nitrogen adsorption, X-ray photoelectron spectroscopy (XPS) and temperature-programmed reduction (TPR) were used to characterize these nanoparticles. Effects of Ru/Si atomic ratio, Re addition, glycerol and catalyst concentrations, reaction time, temperature, and hydrogen pressure were investigated. Re addition retarded the reduction of ruthenium oxide, but increased the catalyst reactivity for glycerol hydrogenolysis. Due to its greater Ru content, Re-Ru@ SiO2 showed much better activity (reacted at much lower temperature) and more yields of 1,2-propanediol and overall liquid-phase products than Re-Ru/SiO2 (prepared by conventional impregnation method) reported before. The rate of glycerol disappearance exhibited first-order dependence on glycerol concentration and hydrogen pressure, with an activation energy of 107.8 kJ/mol. The rate constant increased linearly with increasing Ru/Si atomic ratio and catalyst amount. The yield of overall liquid-phase products correlated well with glycerol conversion.
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12
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Habibi AH, Hayes RE, Semagina N. Bringing attention to metal (un)availability in encapsulated catalysts. Catal Sci Technol 2018. [DOI: 10.1039/c7cy01919j] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The encapsulation method significantly affects the shell porosity, the availability of active sites and the catalytic behavior of Pd@SiO2 materials in methane combustion.
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Affiliation(s)
- A. H. Habibi
- Department of Chemical and Materials Engineering
- University of Alberta
- Edmonton T6G 1H9
- Canada
| | - R. E. Hayes
- Department of Chemical and Materials Engineering
- University of Alberta
- Edmonton T6G 1H9
- Canada
| | - N. Semagina
- Department of Chemical and Materials Engineering
- University of Alberta
- Edmonton T6G 1H9
- Canada
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13
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Pandarus V, Ciriminna R, Gingras G, Béland F, Pagliaro M, Kaliaguine S. Hydrogenolysis of C-O Chemical Bonds of Broad Scope Mediated by a New Spherical Sol-Gel Catalyst. ChemistryOpen 2018; 7:80-91. [PMID: 29318100 PMCID: PMC5754550 DOI: 10.1002/open.201700185] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2017] [Indexed: 11/10/2022] Open
Abstract
The new spherical sol-gel hybrid material SiliaCat Pd0 selectively mediates the hydrogenolysis of aromatic alcohols, aldehydes, and ketones by using an ultralow catalytic amount (0.1 mol % Pd) under mild reaction conditions. The broad reaction scope as well as the catalyst's superior activity and pronounced stability open the route to green and convenient reductive deoxygenation processes of primary synthetic relevance in chemical research as well as in the fine chemical and petrochemical industries.
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Affiliation(s)
- Valerica Pandarus
- SiliCycle2500, Parc-Technologique BoulevardQuebec CityQuebecG1P 4S6Canada
| | - Rosaria Ciriminna
- Istituto per lo Studio dei Materiali Nanostrutturati, CNRvia U. La Malfa 15390146PalermoItaly
| | - Geneviève Gingras
- SiliCycle2500, Parc-Technologique BoulevardQuebec CityQuebecG1P 4S6Canada
| | - François Béland
- SiliCycle2500, Parc-Technologique BoulevardQuebec CityQuebecG1P 4S6Canada
| | - Mario Pagliaro
- Istituto per lo Studio dei Materiali Nanostrutturati, CNRvia U. La Malfa 15390146PalermoItaly
| | - Serge Kaliaguine
- Department of Chemical EngineeringUniversité Laval2325 Rue de l'UniversitéQuebec CityQuebecG1V 0A6Canada
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14
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Xiao F, Li Y, Ren Y, Shen X, Liu Y, Yang H. Preparation of Pd/C nanocatalyst for hydropurification of terephthalic acid from aqueous colloid solution. Colloids Surf A Physicochem Eng Asp 2016. [DOI: 10.1016/j.colsurfa.2016.05.069] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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15
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HOU B, HAN XY, LIN MG, FANG KG. Preparation of SiO2-coated CuFe catalysts for synthesis of higher alcohols from CO hydrogenation. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/s1872-5813(16)30009-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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16
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Li KT, Wang CH, Wang HC. Hydrogenolysis of glycerol to 1,2-propanediol on copper core-porous silica shell-nanoparticles. J Taiwan Inst Chem Eng 2015. [DOI: 10.1016/j.jtice.2015.02.011] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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17
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Wu Y, Chai Y, Li J, Guo H, Wen L, Liu C. Preparation of silicalite-1@Pt/alumina core–shell catalyst for shape-selective hydrogenation of xylene isomers. CATAL COMMUN 2015. [DOI: 10.1016/j.catcom.2015.02.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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18
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Liu G, Yu L, Zhu Y, Guo X, Zhou Y, Ye H. Pd confined in grass-like graphene layers on monolithic cordierite as the catalyst for hydrogenation of 4-carboxybenzaldehyde. CHINESE JOURNAL OF CATALYSIS 2015. [DOI: 10.1016/s1872-2067(14)60256-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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19
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Moustafa NE, Mahmoud KEKF. Diminishing the Gap Between GC-Selective and Universal Detection by Capped Pd Nanoparticles. Chromatographia 2014. [DOI: 10.1007/s10337-014-2683-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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20
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Li G, Tang Z. Noble metal nanoparticle@metal oxide core/yolk-shell nanostructures as catalysts: recent progress and perspective. NANOSCALE 2014; 6:3995-4011. [PMID: 24622876 DOI: 10.1039/c3nr06787d] [Citation(s) in RCA: 153] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Controllable integration of noble metals (e.g., Au, Ag, Pt, and Pd) and metal oxides (e.g., TiO₂, CeO₂, and ZrO₂) into single nanostructures has attracted immense research interest in heterogeneous catalysis, because they not only combine the properties of both noble metals and metal oxides, but also bring unique collective and synergetic functions in comparison with single-component materials. Among many strategies recently developed, one of the most efficient ways is to encapsulate and protect individual noble metal nanoparticles by a metal oxide shell of a certain thickness to generate the core-shell or yolk-shell structure, which exhibits enhanced catalytic performance compared with conventional supported catalysts. In this review article, we summarize the state-of-the art progress in synthesis and catalytic application of noble metal nanoparticle@metal oxide core/yolk-shell nanostructures. We hope that this review will help the readers to obtain better insight into the design and application of well-defined nanocomposites in both the energy and environmental fields.
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Affiliation(s)
- Guodong Li
- Laboratory for Nanomaterials, National Center for Nanoscience and Technology, Beijing, 100190, P. R. China.
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21
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YUAN HONGJING, ZHANG CHUNLEI, HUO WEITAO, NING CHUNLI, TANG YONG, ZHANG YI, CONG DEQUAN, ZHANG WENXIANG, LUO JIAHUAN, LI SU, WANG ZHENLU. Selective hydrogenation of maleic anhydride over Pd/Al2O3 catalysts prepared via colloid deposition. J CHEM SCI 2014. [DOI: 10.1007/s12039-013-0542-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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22
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23
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Ali GM, Thompson CV, Jasim AK, Abdulbaqi IM, Moore JC. Effect of Embedded Pd Microstructures on the Flat-Band-Voltage Operation of Room Temperature ZnO-Based Liquid Petroleum Gas Sensors. SENSORS 2013. [PMCID: PMC3892872 DOI: 10.3390/s131216801] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Three methods were used to fabricate ZnO-based room temperature liquid petroleum gas (LPG) sensors having interdigitated metal-semiconductor-metal (MSM) structures. Specifically, devices with Pd Schottky contacts were fabricated with: (1) un-doped ZnO active layers; (2) Pd-doped ZnO active layers; and (3) un-doped ZnO layers on top of Pd microstructure arrays. All ZnO films were grown on p-type Si(111) substrates by the sol-gel method. For devices incorporating a microstructure array, Pd islands were first grown on the substrate by thermal evaporation using a 100 μm mesh shadow mask. We have estimated the sensitivity of the sensors for applied voltage from –5 to 5 V in air ambient, as well as with exposure to LPG in concentrations from 500 to 3,500 ppm at room temperature (300 K). The current-voltage characteristics were studied and parameters such as leakage current, barrier height, reach-through voltage, and flat-band voltage were extracted. We include contributions due to the barrier height dependence on the electric field and tunneling through the barrier for the studied MSM devices. The Pd-enhanced devices demonstrated a maximum gas response at flat-band voltages. The study also revealed that active layers consisting of Pd microstructure embedded ZnO films resulted in devices exhibiting greater gas-response as compared to those using Pd-doped ZnO thin films or un-doped active layers.
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Affiliation(s)
- Ghusoon M. Ali
- Department of Chemistry and Physics, Coastal Carolina University, Conway, SC 29528, USA; E-Mail:
- Department of Electrical Engineering, Al-Mustansiriyah University, Baghdad 10052, Iraq; E-Mails: (A.K.J.); (I.M.A.)
- Authors to whom correspondence should be addressed; E-Mails: (G.M.A.); (J.C.M.); Tel.: +1-843-349-2985 (J.C.M.); Fax: +1-843-349-2841 (J.C.M.)
| | - Cody V. Thompson
- Department of Chemistry and Physics, Coastal Carolina University, Conway, SC 29528, USA; E-Mail:
| | - Ali K. Jasim
- Department of Electrical Engineering, Al-Mustansiriyah University, Baghdad 10052, Iraq; E-Mails: (A.K.J.); (I.M.A.)
| | - Isam M. Abdulbaqi
- Department of Electrical Engineering, Al-Mustansiriyah University, Baghdad 10052, Iraq; E-Mails: (A.K.J.); (I.M.A.)
| | - James C. Moore
- Department of Chemistry and Physics, Coastal Carolina University, Conway, SC 29528, USA; E-Mail:
- Authors to whom correspondence should be addressed; E-Mails: (G.M.A.); (J.C.M.); Tel.: +1-843-349-2985 (J.C.M.); Fax: +1-843-349-2841 (J.C.M.)
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Won SW, Lim A, Yun YS. Recovery of high-purity metallic Pd from Pd(II)-sorbed biosorbents by incineration. BIORESOURCE TECHNOLOGY 2013; 137:400-403. [PMID: 23611701 DOI: 10.1016/j.biortech.2013.03.143] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2013] [Revised: 03/18/2013] [Accepted: 03/20/2013] [Indexed: 06/02/2023]
Abstract
This work reports a direct way to recover metallic palladium with high purity from Pd(II)-sorbed polyethylenimine-modified Corynebacterium glutamicum biosorbent using a combined method of biosorption and incineration. This study is focused on the incineration part which affects the purity of recovered Pd. The incineration temperature and the amount of Pd loaded on the biosorbent were considered as major factors in the incineration process, and their effects were examined. The results showed that both factors significantly affected the enhancement of the recovery efficiency and purity of the recovered Pd. SEM-EDX and XRD analyses were used to confirm that Pd phase existed in the ash. As a result, the recovered Pd was changed from PdO to zero-valent Pd as the incineration temperature was increased from 600 to 900°C. Almost 100% pure metallic Pd was recovered with recovery efficiency above 99.0% under the conditions of 900°C and 136.9 mg/g.
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Affiliation(s)
- Sung Wook Won
- Department of BIN Fusion Technology, Chonbuk National University, Jeonju, Jeonbuk 561-756, Republic of Korea
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Samanta A, Devi RN. Pd Ultra-Small Clusters as Precursors for Silica-Encapsulated Pd Nanoreactors: Highly Sinter-Resistant Catalysts. ChemCatChem 2013. [DOI: 10.1002/cctc.201200908] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Abstract
The 0.5 wt.% Pd/C catalysts used for purification of terephthalic acid(TA) were prepared, and the effects of dodecyltrimethylammonium bromide(DTAB) concentration on activity and microstructure of catalysts were investigated by means of SEM, TEM, XRD,HPLC,specific surface area(BET) and porosity test. The results show that DTAB can increase the activity of Pd/C catalysts, and the catalytic activity increases with the increase in DTAB concentration and nearly remains constant with further increase after it exceeds 0.5 wt.%.. DTAB can clean the surface of activated carbon and diminish the palladium size of Pd/C catalysts. The addition of DTAB has effects in crystal structure of nano Pd/C catalysts, and the Pd crystal planes of (111) and (200) was replaced by a broad reflections after DTAB added. DTAB tends to form various meta-stable structures(spherical or cylindrical)at the solid-liquid interface that helps finer grain for mation and hinders subsequent coarsening of the palladium particles.
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Batail N, Clémençon I, Legens C, Chaumonnot A, Uzio D. Controlled Synthesis and High Oxidation Stability of Cobalt Nanoparticles Encapsulated in Mesoporous Silica using a Modified Stöber Approach and a Pseudomorphic Transformation. Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201201429] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Xu Y, Ma J, Xu Y, Xu L, Xu L, Li H, Li H. Palladium nanoparticles encapsulated in porous silica shells: an efficient and highly stable catalyst for CO oxidation. RSC Adv 2013. [DOI: 10.1039/c2ra22832g] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
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29
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Li L, He S, Song Y, Zhao J, Ji W, Au CT. Fine-tunable Ni@porous silica core–shell nanocatalysts: Synthesis, characterization, and catalytic properties in partial oxidation of methane to syngas. J Catal 2012. [DOI: 10.1016/j.jcat.2012.01.004] [Citation(s) in RCA: 122] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Zhou Y, Li X, Pan X, Bao X. A highly active and stable Pd–TiO2/CDC–SiC catalyst for hydrogenation of 4-carboxybenzaldehyde. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm31503c] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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31
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Lee H, Kim S, Lee DW, Lee KY. Direct synthesis of hydrogen peroxide from hydrogen and oxygen over a Pd core-silica shell catalyst. CATAL COMMUN 2011. [DOI: 10.1016/j.catcom.2011.03.001] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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Kahng YH, Lee S, Choe M, Jo G, Park W, Yoon J, Hong WK, Cho CH, Lee BH, Lee T. A study of graphene films synthesized on nickel substrates: existence and origin of small-base-area peaks. NANOTECHNOLOGY 2011; 21:225708. [PMID: 21169664 DOI: 10.1088/0957-4484/21/22/225708] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Large-area graphene films, synthesized by the chemical vapor deposition (CVD) method, have the potential to be used as electrodes. However, the electrical properties of CVD-synthesized graphene films fall short of the best results obtained for graphene films prepared by other methods. Therefore, it is important to understand the reason why these electrical properties are inferior to improve the applicability of CVD-grown graphene films. Here, we show that CVD-grown graphene films on nickel substrates contain many small-base-area (SBA) peaks that scatter conducting electrons, thereby decreasing the Hall mobility of charges in the films. These SBA peaks were induced by small peaks on the nickel surface and are likely composed of amorphous carbon. The formation of these SBA peaks on graphene films was successfully suppressed by controlling the surface morphology of the nickel substrate. These findings may be useful for the development of a CVD synthesis method that is capable of producing better quality graphene films with large areas.
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Affiliation(s)
- Yung Ho Kahng
- Department of Materials Science and Engineering, Gwangju Institute of Science and Technology, Gwangju 500-712, Korea.
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Chen C, Qu J, Cao C, Niu F, Song W. CuO nanoclusters coated with mesoporous SiO2 as highly active and stable catalysts for olefin epoxidation. ACTA ACUST UNITED AC 2011. [DOI: 10.1039/c0jm04568c] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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34
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Harada T, Ikeda S, Hashimoto F, Sakata T, Ikeue K, Torimoto T, Matsumura M. Catalytic activity and regeneration property of a Pd nanoparticle encapsulated in a hollow porous carbon sphere for aerobic alcohol oxidation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:17720-17725. [PMID: 20939563 DOI: 10.1021/la102824s] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
A core-shell composite consisting of a palladium (Pd) nanoparticle and a hollow carbon shell (Pd@hmC) was employed as a catalyst for aerobic oxidation of various alcohols. The core-shell structure was synthesized by consecutive coatings of Pd nanoparticles with siliceous and carbon layers followed by removal of the intermediate siliceous layer. Structural characterizations using TEM and N(2) adsorption-desorption measurements revealed that Pd@hmC thus-obtained was composed of a Pd nanoparticle core of 3-6 nm in diameter and a hollow carbon shell with well-developed mesopore (ca. 2.5 nm in diameter) and micropore (ca. 0.4-0.8 nm in diameter) systems. When compared to some Pd-supported carbons, Pd@hmC showed a high level of catalytic activity for oxidation of benzyl alcohol into benzaldehyde using atmospheric pressure of O(2) as an oxidant. The Pd@hmC composite also exhibited a high level of catalytic activity for aerobic oxidations of other primary benzylic and allylic alcohols into corresponding aldehydes. The presence of a well-developed pore system in the lateral carbon shell enabled efficient diffusion of both substrates and products to reach the central Pd nanoparticles, leading to such high catalytic activities. This core-shell structure also provided high thermal stability of Pd nanoparticles toward coalescence and/or aggregation due to the physical isolation of each Pd nanoparticle from neighboring particles by the carbon shell: this specific property of Pd@hmC resulted in possible regeneration of catalytic activity for these aerobic oxidations by a high-temperature heat treatment of the sample recovered after catalytic reactions.
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Affiliation(s)
- Takashi Harada
- Research Center for Solar Energy Chemistry, Osaka University, 1-3 Machikaneyama, Toyonaka 560-8531, Japan
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Dai Y, Lim B, Yang Y, Cobley CM, Li W, Cho EC, Grayson B, Fanson PT, Campbell CT, Sun Y, Xia Y. A Sinter-Resistant Catalytic System Based on Platinum Nanoparticles Supported on TiO2 Nanofibers and Covered by Porous Silica. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.201001839] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Dai Y, Lim B, Yang Y, Cobley CM, Li W, Cho EC, Grayson B, Fanson PT, Campbell CT, Sun Y, Xia Y. A Sinter-Resistant Catalytic System Based on Platinum Nanoparticles Supported on TiO2 Nanofibers and Covered by Porous Silica. Angew Chem Int Ed Engl 2010; 49:8165-8. [DOI: 10.1002/anie.201001839] [Citation(s) in RCA: 120] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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37
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Forman AJ, Park JN, Tang W, Hu YS, Stucky GD, McFarland EW. Silica-Encapsulated Pd Nanoparticles as a Regenerable and Sintering-Resistant Catalyst. ChemCatChem 2010. [DOI: 10.1002/cctc.201000015] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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38
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Li Y, Liu S, Yao L, Ji W, Au CT. Core-shell structured iron nanoparticles for the generation of CO -free hydrogen via ammonia decomposition. CATAL COMMUN 2010. [DOI: 10.1016/j.catcom.2009.11.003] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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