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Bhullar RK, Xu W, Zdilla MJ. Hydrocarbon Formation from Syngas with In-Operando Monitoring of Cobalt- and Manganese-Based (pre)Catalysts Using X-ray Diffraction. ACS OMEGA 2024; 9:29917-29927. [PMID: 39005807 PMCID: PMC11238217 DOI: 10.1021/acsomega.4c04553] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/13/2024] [Revised: 05/28/2024] [Accepted: 06/05/2024] [Indexed: 07/16/2024]
Abstract
Two-layered metal oxides (LiCoO2 and cobalt-doped K n MnO2, n < 1) were explored as precatalysts for nanoconfined cobalt-based Fischer-Tropsch catalysts for conversion of syngas (CO and H2) to hydrocarbons. Ex situ, in situ, and PDF XRD analyses are presented. Based on in situ XRD analysis, LiCoO2 underwent reduction to predominantly cubic and hexagonal phases of cobalt metal. Reaction with syngas resulted in the generation of carbon, cobalt carbide, and lithium carbonate, in addition to the metallic cobalt phases. In the case of cobalt-doped birnessite, catalyst activation converted the birnessite phase to manganite and the cobalt to elemental cobalt, along with similar lithium and carbon phases. Conversion of syngas to C1 through C7 products was observed. The best conversions were observed for the LiCoO2 precursor catalyst, with generally a low olefin-to-paraffin ratio. While the conversions for the cobalt-doped birnessite precatalyst were generally lower, with lower chain lengths (up to C5), these catalysts gave a strikingly high olefin-to-paraffin ratio: in the best case, greater than 20:1.
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Affiliation(s)
- Ravneet K Bhullar
- Department of Chemistry, Temple University, 1901 N. 13th St., Philadelphia, Pennsylvania 19086, United States
| | - Wenqian Xu
- X-ray Science Division, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439, United States
| | - Michael J Zdilla
- Department of Chemistry, Temple University, 1901 N. 13th St., Philadelphia, Pennsylvania 19086, United States
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Liu Y, Lu B, Ning H, Zhang L, Luo Q, Ban H, Mao S. Oxygen Vacancy Promoted O 2 Activation over Mesoporous Ni-Co Mixed Oxides for Aromatic Hydrocarbon Oxidation. Inorg Chem 2023; 62:3195-3201. [PMID: 36760173 DOI: 10.1021/acs.inorgchem.2c04150] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Abstract
Whether the oxygen vacancies of heterogeneous catalysts improve their catalytic activity or not has recently been the topic of intense debate in the oxidation of hydrocarbons. We designed an effective strategy to construct mesoporous Ni-Co mixed oxides via a ligand-assisted self-assembly approach. The surface oxygen vacancy concentrations of the mesoporous Ni-Co mixed oxide catalysts were regulated by changing the doping amount of Ni or the reduction method, and the relationship between oxygen vacancies and catalytic activity was studied. Controlled experiments and DFT calculations revealed that oxygen molecules were more favorably adsorbed and activated on oxygen vacancies to form active oxygen species. Increasing the oxygen vacancy concentration within a certain range can effectively enrich the active oxygen species, therefore improving the oxidation rate of ethylbenzene. The optimized mCo3O4-0.1NiO catalyst exhibited a remarkable catalytic activity for the solvent-free oxidation of ethylbenzene to acetophenone, typically including 68.0% conversion and 95.4% selectivity (20 mg mCo3O4-0.1NiO, 10 mL ethylbenzene, and 0.6 MPa O2).
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Affiliation(s)
- Yali Liu
- Department of Chemical Engineering, School of Petrochemical Engineering & Environment, Zhejiang Ocean University, Zhoushan 316022, China
| | - Bing Lu
- Advanced Materials and Catalysis Group, State Key Laboratory of Clean Energy Utilization, Center of Chemistry for Frontier Technologies, Institute of Catalysis, Department of Chemistry, Zhejiang University, Hangzhou 310028, P. R. China
| | - Honghui Ning
- Advanced Materials and Catalysis Group, State Key Laboratory of Clean Energy Utilization, Center of Chemistry for Frontier Technologies, Institute of Catalysis, Department of Chemistry, Zhejiang University, Hangzhou 310028, P. R. China
| | - Liwei Zhang
- Advanced Materials and Catalysis Group, State Key Laboratory of Clean Energy Utilization, Center of Chemistry for Frontier Technologies, Institute of Catalysis, Department of Chemistry, Zhejiang University, Hangzhou 310028, P. R. China
| | - Qian Luo
- Advanced Materials and Catalysis Group, State Key Laboratory of Clean Energy Utilization, Center of Chemistry for Frontier Technologies, Institute of Catalysis, Department of Chemistry, Zhejiang University, Hangzhou 310028, P. R. China
| | - Heng Ban
- Advanced Materials and Catalysis Group, State Key Laboratory of Clean Energy Utilization, Center of Chemistry for Frontier Technologies, Institute of Catalysis, Department of Chemistry, Zhejiang University, Hangzhou 310028, P. R. China
| | - Shanjun Mao
- Advanced Materials and Catalysis Group, State Key Laboratory of Clean Energy Utilization, Center of Chemistry for Frontier Technologies, Institute of Catalysis, Department of Chemistry, Zhejiang University, Hangzhou 310028, P. R. China
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El-Boubbou K, Lemine OM, Jaque D. Synthesis of novel hybrid mesoporous gold iron oxide nanoconstructs for enhanced catalytic reduction and remediation of toxic organic pollutants. RSC Adv 2022; 12:35989-36001. [PMID: 36545116 PMCID: PMC9753618 DOI: 10.1039/d2ra05990h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Accepted: 11/02/2022] [Indexed: 12/23/2022] Open
Abstract
The development of highly efficient, rapid, and recyclable nanocatalysts for effective elimination of toxic environmental contaminants remains a high priority in various industrial applications. Herein, we report the preparation of hybrid mesoporous gold-iron oxide nanoparticles (Au-IO NPs) via the nanocasting "inverse hard-templated replication" approach. Dispersed Au NPs were anchored on amine-functionalized iron oxide incorporated APMS (IO@APMS-amine), followed by etching of the silica template to afford hybrid mesoporous Au-IO NPs. The obtained nanoconstructs were fully characterized using electron microscopy, N2 physisorption, and various spectroscopic techniques. Owing to their magnetic properties, high surface areas, large pore volumes, and mesoporous nature (S BET = 124 m2 g-1, V pore = 0.33 cm3 g-1, and d pore = 4.5 nm), the resulting Au-IO mesostructures were employed for catalytic reduction of nitroarenes (i.e. nitrophenol and nitroaniline), two of the most common toxic organic pollutants. It was found that these Au-IO NPs act as highly efficient nanocatalysts showing exceptional stabilities (>3 months), enhanced catalytic efficiencies in very short times (∼100% conversions within only 25-60 s), and excellent recyclabilities (up to 8 cycles). The kinetic pseudo-first-order apparent reaction rate constants (k app) were calculated to be equal to 8.8 × 10-3 and 23.5 × 10-3 s-1 for 2-nitrophenol and 2-nitroaniline reduction, respectively. To our knowledge, this is considered one of the best and fastest Au-based nanocatalysts reported for the catalytic reduction of nitroarenes, promoted mainly by the synergistic cooperation of their high surface area, large pore volume, mesoporous nature, and enhanced Au-NP dispersions. The unique mesoporous hybrid Au-IO nanoconstructs synthesized here make them novel, stable, and approachable nanocatalyst platform for various catalytic industrial processes.
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Affiliation(s)
- Kheireddine El-Boubbou
- King Saud bin Abdulaziz University for Health Sciences (KSAU-HS), King Abdullah International Medical Research Center (KAIMRC)King Abdulaziz Medical City, National Guard Health AffairsRiyadh 11426Saudi Arabia,Nanomaterials for Bioimaging Group (nanoBIG), Facultad de Ciencias, Departamento de Física de Materiales, Universidad Autónoma de Madrid (UAM)Madrid 28049Spain,Department of Chemistry, College of Science, University of BahrainSakhir 32038Kingdom of Bahrain
| | - O. M. Lemine
- Department of Physics, College of Sciences, Imam Mohammad Ibn Saud Islamic University (IMSIU)Riyadh 11623Saudi Arabia
| | - Daniel Jaque
- Nanomaterials for Bioimaging Group (nanoBIG), Facultad de Ciencias, Departamento de Física de Materiales, Universidad Autónoma de Madrid (UAM)Madrid 28049Spain
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Singh A, Singh N, Kaur N, Jang DO. Gold nanoparticles supported on ionic‐liquid‐functionalized cellulose (Au@CIL): a heterogeneous catalyst for the selective reduction of aromatic nitro compounds. Appl Organomet Chem 2022. [DOI: 10.1002/aoc.6855] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Anoop Singh
- Department of Chemistry Indian Institute of Technology Ropar Punjab India
| | - Narinder Singh
- Department of Chemistry Indian Institute of Technology Ropar Punjab India
| | - Navneet Kaur
- Department of Chemistry Panjab University Chandigarh India
| | - Doo Ok Jang
- Department of Chemistry Yonsei University Wonju Korea
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Öztürk BÖ, Çetinel B, Karabulut Şehitoğlu S. Encapsulation of
N
‐heterocyclic carbene–gold (I) catalysts within magnetic core/shell silica gels: A reusable alkyne hydration catalyst. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.5686] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Bengi Özgün Öztürk
- Faculty of Science, Chemistry DepartmentHacettepe University Beytepe‐Ankara 06800 Turkey
| | - Begüm Çetinel
- Faculty of Science, Chemistry DepartmentHacettepe University Beytepe‐Ankara 06800 Turkey
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Mohammadpour P, Safaei E. Catalytic C-H aerobic and oxidant-induced oxidation of alkylbenzenes (including toluene derivatives) over VO 2+ immobilized on core-shell Fe 3O 4@SiO 2 at room temperature in water. RSC Adv 2020; 10:23543-23553. [PMID: 35517365 PMCID: PMC9055093 DOI: 10.1039/d0ra03483e] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2020] [Accepted: 05/15/2020] [Indexed: 11/21/2022] Open
Abstract
Direct C–H bond oxidation of organic materials, and producing the necessary oxygenated compounds under mild conditions, has attracted increasing interest. The selective oxidation of various alkylbenzenes was carried out by means of a new catalyst containing VO2+ species supported on silica-coated Fe3O4 nanoparticles using t-butyl hydroperoxide as an oxidant at room temperature in H2O or solvent-free media. The chemical and structural characterization of the catalyst using several methods such as FTIR spectroscopy, XRD, FETEM, FESEM, SAED, EDX and XPS showed that VO2+ is covalently bonded to the silica surface. High selectivity and excellent conversion of various toluene derivatives, with less reactive aliphatic (sp3) C–H bonds, to related benzoic acids were quite noticeable. The aerobic oxygenation reaction of these alkylbenzenes was studied under the same conditions. All the results accompanied by sustainability of the inexpensive and simple magnetically separable heterogeneous catalyst proved the important criteria for commercial applications. A highly efficient, recoverable, sustainable, economic and eco-friendly catalyst containing VO2+ species supported on SiO2@Fe3O4 nanoparticles for selective oxidation of alkylbenzenes using TBHP or O2 at room temperature in H2O or solvent-free media.![]()
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Affiliation(s)
- Pegah Mohammadpour
- Department of Chemistry, College of Sciences, Shiraz University Shiraz 7194684795 Iran
| | - Elham Safaei
- Department of Chemistry, College of Sciences, Shiraz University Shiraz 7194684795 Iran
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Lee JH, Bonte W, Corthals S, Krumeich F, Ruitenbeek M, van Bokhoven JA. Zeolite Nanoreactor for Investigating Sintering Effects of Cobalt-Catalyzed Fischer–Tropsch Synthesis. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.8b05755] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jin Hee Lee
- Laboratory for Catalysis and Sustainable Chemistry, Paul Scherrer Institute, 5232 Villigen, Switzerland
- Center for Environment & Sustainable Resources, Korea Research Institute of Chemical Technology, 34114 Daejeon, South Korea
| | - Wouter Bonte
- Hydrocarbons R&D, Dow Benelux BV, PO Box 48, 4530 AA Terneuzen, The Netherlands
| | - Steven Corthals
- Hydrocarbons R&D, Dow Benelux BV, PO Box 48, 4530 AA Terneuzen, The Netherlands
| | - Frank Krumeich
- Department of Chemistry and Applied Bioscience, ETH Zurich, 8093 Zurich, Switzerland
| | - Matthijs Ruitenbeek
- Hydrocarbons R&D, Dow Benelux BV, PO Box 48, 4530 AA Terneuzen, The Netherlands
| | - Jeroen A. van Bokhoven
- Laboratory for Catalysis and Sustainable Chemistry, Paul Scherrer Institute, 5232 Villigen, Switzerland
- Department of Chemistry and Applied Bioscience, ETH Zurich, 8093 Zurich, Switzerland
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