1
|
Onisuru OR, Fapojuwo DP, Oseghale CO, Alimi OA, Meijboom R. Transfer hydrogenation of ketone; an in situ approach toward an eco-friendly reduction. RSC Adv 2022; 12:19890-19900. [PMID: 35865205 PMCID: PMC9262422 DOI: 10.1039/d2ra02701a] [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: 04/28/2022] [Accepted: 06/22/2022] [Indexed: 11/23/2022] Open
Abstract
The use of water as a solvent in chemical reactions has recently been brought to public attention, especially in the exploration of eco-friendly procedures. It is readily available, abundantly accessible, non-toxic, non-flammable, and at a low cost. As opposed to the previous limitation of reactant solubilities associated with aqueous media, a hydrogel such as a hydroxypropyl methylcellulose (HPMC) solution can significantly improve the reactant solubility. This investigation employed water and HPMC as the reaction solvent, and the reaction medium viscosity was impressively enhanced. Silica-supported Pd particles (Pd@SiO2) were synthesized and effectively catalyzed the reduction of acetophenone in the presence of sodium borohydride (NaBH4) as the hydrogen source. The conversion of acetophenone to 1-phenyl ethanol remained at a very high value of >99.34% with 100% selectivity towards 1-phenyl ethanol. The use of water as a solvent in chemical reactions has recently been brought to public attention, especially in the exploration of eco-friendly procedures.![]()
Collapse
Affiliation(s)
- Oluwatayo Racheal Onisuru
- Department of Chemical Sciences, University of Johannesburg P.O. Box 524, Auckland Park Johannesburg 2006 South Africa +27 (0)11 559 2819 +27 (0)72 894 0293
| | - Dele Peter Fapojuwo
- Department of Chemical Sciences, University of Johannesburg P.O. Box 524, Auckland Park Johannesburg 2006 South Africa +27 (0)11 559 2819 +27 (0)72 894 0293
| | - Charles O Oseghale
- Department of Chemical Sciences, University of Johannesburg P.O. Box 524, Auckland Park Johannesburg 2006 South Africa +27 (0)11 559 2819 +27 (0)72 894 0293
| | - Oyekunle Azeez Alimi
- Department of Chemical Sciences, University of Johannesburg P.O. Box 524, Auckland Park Johannesburg 2006 South Africa +27 (0)11 559 2819 +27 (0)72 894 0293
| | - Reinout Meijboom
- Department of Chemical Sciences, University of Johannesburg P.O. Box 524, Auckland Park Johannesburg 2006 South Africa +27 (0)11 559 2819 +27 (0)72 894 0293
| |
Collapse
|
2
|
Arora B, Sharma S, Dutta S, Sharma A, Yadav S, Rana P, Rana P, Sharma RK. A sustainable gateway to access 1,8-dioxo-octahydroxanthene scaffolds via a surface-engineered halloysite-based magnetically responsive catalyst. NEW J CHEM 2022. [DOI: 10.1039/d1nj05509g] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
A covalently modified, surface-engineered Cu(ii)@DCH@CPTMS@MHNT nanocatalyst is synthesized, which showed incredible catalytic activity in accessing a library of xanthene scaffolds.
Collapse
Affiliation(s)
- Bhavya Arora
- Green Chemistry Network Centre, Department of Chemistry, University of Delhi, New Delhi-110007, India
| | - Shivani Sharma
- Green Chemistry Network Centre, Department of Chemistry, University of Delhi, New Delhi-110007, India
| | - Sriparna Dutta
- Green Chemistry Network Centre, Department of Chemistry, University of Delhi, New Delhi-110007, India
| | - Aditi Sharma
- Green Chemistry Network Centre, Department of Chemistry, University of Delhi, New Delhi-110007, India
| | - Sneha Yadav
- Green Chemistry Network Centre, Department of Chemistry, University of Delhi, New Delhi-110007, India
| | - Pooja Rana
- Green Chemistry Network Centre, Department of Chemistry, University of Delhi, New Delhi-110007, India
| | - Pooja Rana
- Green Chemistry Network Centre, Department of Chemistry, University of Delhi, New Delhi-110007, India
| | - R. K. Sharma
- Green Chemistry Network Centre, Department of Chemistry, University of Delhi, New Delhi-110007, India
| |
Collapse
|
3
|
Glotov A, Vutolkina A, Pimerzin A, Vinokurov V, Lvov Y. Clay nanotube-metal core/shell catalysts for hydroprocesses. Chem Soc Rev 2021; 50:9240-9277. [PMID: 34241609 DOI: 10.1039/d1cs00502b] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Catalytic hydroprocesses play a significant role in oil refining and petrochemistry. The tailored design of new metal nanosystems and optimization of their support, composition, and structure is a prospective strategy for enhancing the efficiency of catalysts. Mesoporous support impacts the active component by binding it to the surface, which leads to the formation of tiny highly dispersed catalytic particles stabilized from aggregation and with minimized leaching. The structural and acidic properties of the support are crucial and determine the size and dispersion of the active metal phase. Currently, research efforts are shifted toward the design of nanoscale porous materials, where homogeneous catalysts are displaced by heterogeneous. Ceramic materials, such as 50 nm diameter natural halloysite nanotubes, are of special interest for this. Much attention to halloysite clay is due to its tubular structure with a hollow 10-15 nm diameter internal cavity, textural characteristics, and different chemical compositions of the outer/inner surfaces, allowing selective nanotube modification. Loading halloysite with metal particles or placing them outside the tubes provides stable and efficient mesocatalysts. The low cost of this abundant nanoclay makes it a good choice for the scaled-up architectural design of core-shell catalysts, containing active metal sites (Au, Ag, Pt, Ru, Co, Mo, Fe2O3, CdS, CdZnS, Cu-Ni) located inside or outside the tubular template. These alumosilicate nanotubes are environment-friendly and are available in thousands of tons. Herein, we summarized the advances of halloysite-based composite materials for hydroprocesses, focusing on the selective binding of metal particles. We analyze the tubes' morphology adjustments and size selection, the physicochemical properties of pristine and modified halloysite (e.g., acid-etched or silanized), the methods of metal clusters formation, and their localization. We indicate prospective routes for the architectural design of stable and efficient nanocatalysts based on this safe and natural clay material.
Collapse
Affiliation(s)
- Aleksandr Glotov
- Gubkin Russian State University of Oil and Gas (NRU), 65 Leninsky Prospekt, Moscow, 119991, Russia.
| | | | | | | | | |
Collapse
|
4
|
Fapojuwo DP, Oseghale CO, Akinnawo CA, Meijboom R. Bimetallic PdM (M = Co, Ni) catalyzed hydrogenation of nitrobenzene at the water/oil interface in a Pickering emulsion. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.126513] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
|
5
|
Organic Reactions Using Clay and Clay-Supported Catalysts: A Survey of Recent Literature. CATALYSIS SURVEYS FROM ASIA 2021. [DOI: 10.1007/s10563-021-09333-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
|
6
|
Ament K, Köwitsch N, Hou D, Götsch T, Kröhnert J, Heard CJ, Trunschke A, Lunkenbein T, Armbrüster M, Breu J. Nanoparticles Supported on Sub-Nanometer Oxide Films: Scaling Model Systems to Bulk Materials. Angew Chem Int Ed Engl 2021; 60:5890-5897. [PMID: 33289925 PMCID: PMC7986867 DOI: 10.1002/anie.202015138] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Indexed: 11/07/2022]
Abstract
Ultrathin layers of oxides deposited on atomically flat metal surfaces have been shown to significantly influence the electronic structure of the underlying metal, which in turn alters the catalytic performance. Upscaling of the specifically designed architectures as required for technical utilization of the effect has yet not been achieved. Here, we apply liquid crystalline phases of fluorohectorite nanosheets to fabricate such architectures in bulk. Synthetic sodium fluorohectorite, a layered silicate, when immersed into water spontaneously and repulsively swells to produce nematic suspensions of individual negatively charged nanosheets separated to more than 60 nm, while retaining parallel orientation. Into these galleries oppositely charged palladium nanoparticles were intercalated whereupon the galleries collapse. Individual and separated Pd nanoparticles were thus captured and sandwiched between nanosheets. As suggested by the model systems, the resulting catalyst performed better in the oxidation of carbon monoxide than the same Pd nanoparticles supported on external surfaces of hectorite or on a conventional Al2 O3 support. XPS confirmed a shift of Pd 3d electrons to higher energies upon coverage of Pd nanoparticles with nanosheets to which we attribute the improved catalytic performance. DFT calculations showed increasing positive charge on Pd weakened CO adsorption and this way damped CO poisoning.
Collapse
Affiliation(s)
- Kevin Ament
- Bavarian Polymer Institute and Department of ChemistryUniversity of BayreuthUniversitätsstraße 3095447BayreuthGermany
| | - Nicolas Köwitsch
- Faculty of Natural SciencesInstitute of ChemistryMaterials for Innovative Energy ConceptsChemnitz University of TechnologyStraße der Nationen 6209111ChemnitzGermany
| | - Dianwei Hou
- Department of Physical and Macromolecular ChemistryCharles UniversityHlavova 8128 00Prague 2Czech Republic
| | - Thomas Götsch
- Department of Inorganic ChemistryFritz-Haber-Institut der Max-Planck-GesellschaftFaradayweg 4–614195BerlinGermany
| | - Jutta Kröhnert
- Department of Inorganic ChemistryFritz-Haber-Institut der Max-Planck-GesellschaftFaradayweg 4–614195BerlinGermany
| | - Christopher J. Heard
- Department of Physical and Macromolecular ChemistryCharles UniversityHlavova 8128 00Prague 2Czech Republic
| | - Annette Trunschke
- Department of Inorganic ChemistryFritz-Haber-Institut der Max-Planck-GesellschaftFaradayweg 4–614195BerlinGermany
| | - Thomas Lunkenbein
- Department of Inorganic ChemistryFritz-Haber-Institut der Max-Planck-GesellschaftFaradayweg 4–614195BerlinGermany
| | - Marc Armbrüster
- Faculty of Natural SciencesInstitute of ChemistryMaterials for Innovative Energy ConceptsChemnitz University of TechnologyStraße der Nationen 6209111ChemnitzGermany
| | - Josef Breu
- Bavarian Polymer Institute and Department of ChemistryUniversity of BayreuthUniversitätsstraße 3095447BayreuthGermany
| |
Collapse
|
7
|
Ament K, Köwitsch N, Hou D, Götsch T, Kröhnert J, Heard CJ, Trunschke A, Lunkenbein T, Armbrüster M, Breu J. Nanopartikel auf subnanometer dünnen oxidischen Filmen: Skalierung von Modellsystemen. ANGEWANDTE CHEMIE (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 133:5954-5961. [PMID: 38505494 PMCID: PMC10946923 DOI: 10.1002/ange.202015138] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Indexed: 03/21/2024]
Abstract
AbstractDurch die Abscheidung von ultradünnen Oxidschichten auf atomar‐flachen Metalloberflächen konnte die elektronische Struktur des Metalls und hierdurch dessen katalytische Aktivität beeinflusst werden. Die Skalierung dieser Architekturen für eine technische Nutzbarkeit war bisher aber kaum möglich. Durch die Verwendung einer flüssigkristallinen Phase aus Fluorhectorit‐Nanoschichten, können wir solche Architekturen in skalierbarem Maßstab imitieren. Synthetischer Natriumfluorhectorit (NaHec) quillt spontan und repulsiv in Wasser zu einer nematischen flüssigkristallinen Phase aus individuellen Nanoschichten. Diese tragen eine permanente negative Schichtladung, sodass selbst bei einer Separation von über 60 nm eine parallele Anordnung der Schichten behalten wird. Zwischen diesen Nanoschichten können Palladium‐Nanopartikel mit entgegengesetzter Ladung eingelagert werden, wodurch die nematische Phase kollabiert und separierte Nanopartikel zwischen den Schichten fixiert werden. Die Aktivität zur CO‐Oxidation des so entstandenen Katalysators war höher als z. B. die der gleichen Nanopartikel auf konventionellem Al2O3 oder der externen Oberfläche von NaHec. Durch Röntgenphotoelektronenspektroskopie konnte eine Verschiebung der Pd‐3d‐Elektronen zu höheren Bindungsenergien beobachtet werden, womit die erhöhte Aktivität erklärt werden kann. Berechnungen zeigten, dass mit erhöhter positiver Ladung des Pd die Adsorptionsstärke von CO erniedrigt und damit auch die Vergiftung durch CO vermindert wird.
Collapse
Affiliation(s)
- Kevin Ament
- Bavarian Polymer Institute and Department of ChemistryUniversity of BayreuthUniversitätsstraße 3095447BayreuthDeutschland
| | - Nicolas Köwitsch
- Faculty of Natural SciencesInstitute of ChemistryMaterials for Innovative Energy ConceptsChemnitz University of TechnologyStraße der Nationen 6209111ChemnitzDeutschland
| | - Dianwei Hou
- Department of Physical and Macromolecular ChemistryCharles UniversityHlavova 8128 00Prague 2Czech Republic
| | - Thomas Götsch
- Department of Inorganic ChemistryFritz-Haber-Institut der Max-Planck-GesellschaftFaradayweg 4–614195BerlinDeutschland
| | - Jutta Kröhnert
- Department of Inorganic ChemistryFritz-Haber-Institut der Max-Planck-GesellschaftFaradayweg 4–614195BerlinDeutschland
| | - Christopher J. Heard
- Department of Physical and Macromolecular ChemistryCharles UniversityHlavova 8128 00Prague 2Czech Republic
| | - Annette Trunschke
- Department of Inorganic ChemistryFritz-Haber-Institut der Max-Planck-GesellschaftFaradayweg 4–614195BerlinDeutschland
| | - Thomas Lunkenbein
- Department of Inorganic ChemistryFritz-Haber-Institut der Max-Planck-GesellschaftFaradayweg 4–614195BerlinDeutschland
| | - Marc Armbrüster
- Faculty of Natural SciencesInstitute of ChemistryMaterials for Innovative Energy ConceptsChemnitz University of TechnologyStraße der Nationen 6209111ChemnitzDeutschland
| | - Josef Breu
- Bavarian Polymer Institute and Department of ChemistryUniversity of BayreuthUniversitätsstraße 3095447BayreuthDeutschland
| |
Collapse
|
8
|
Ament K, Wagner DR, Götsch T, Kikuchi T, Kröhnert J, Trunschke A, Lunkenbein T, Sasaki T, Breu J. Enhancing the Catalytic Activity of Palladium Nanoparticles via Sandwich-Like Confinement by Thin Titanate Nanosheets. ACS Catal 2021; 11:2754-2762. [PMID: 33815894 PMCID: PMC8016112 DOI: 10.1021/acscatal.1c00031] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Revised: 02/04/2021] [Indexed: 11/29/2022]
Abstract
As atomically thin oxide layers deposited on flat (noble) metal surfaces have been proven to have a significant influence on the electronic structure and thus the catalytic activity of the metal, we sought to mimic this architecture at the bulk scale. This could be achieved by intercalating small positively charged Pd nanoparticles of size 3.8 nm into a nematic liquid crystalline phase of lepidocrocite-type layered titanate. Upon intercalation the galleries collapsed and Pd nanoparticles were captured in a sandwichlike mesoporous architecture showing good accessibility to Pd nanoparticles. On the basis of X-ray photoelectron spectroscopy (XPS) and CO diffuse reflectance Fourier transform infrared spectroscopy (DRIFTS) Pd was found to be in a partially oxidized state, while a reduced Ti species indicated an electronic interaction between nanoparticles and nanosheets. The close contact of titanate sandwiching Pd nanoparticles, moreover, allows for the donation of a lattice oxygen to the noble metal (inverse spillover). Due to the metal-support interactions of this peculiar support, the catalyst exhibited the oxidation of CO with a turnover frequency as high as 0.17 s-1 at a temperature of 100 °C.
Collapse
Affiliation(s)
- Kevin Ament
- Bavarian
Polymer Institute and Department of Chemistry, University of Bayreuth, 95447 Bayreuth, Germany
| | - Daniel R. Wagner
- Bavarian
Polymer Institute and Department of Chemistry, University of Bayreuth, 95447 Bayreuth, Germany
| | - Thomas Götsch
- Department
of Inorganic Chemistry, Fritz-Haber-Institut
der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany
| | - Takayuki Kikuchi
- International
Centre for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Jutta Kröhnert
- Department
of Inorganic Chemistry, Fritz-Haber-Institut
der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany
| | - Annette Trunschke
- Department
of Inorganic Chemistry, Fritz-Haber-Institut
der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany
| | - Thomas Lunkenbein
- Department
of Inorganic Chemistry, Fritz-Haber-Institut
der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany
| | - Takayoshi Sasaki
- International
Centre for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Josef Breu
- Bavarian
Polymer Institute and Department of Chemistry, University of Bayreuth, 95447 Bayreuth, Germany
| |
Collapse
|
9
|
Pd-Catalyzed aerobic oxidation of the sesquiterpene isolongifolene: A green and heterogeneous process. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2020.120192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
10
|
Gupta U, Krishnapriya R, Sharma RK. A Sustainable Palladium-Intercalated Montmorillonite Clay Catalytic System for Imine Hydrogenation under Mild Conditions. Chempluschem 2020; 86:540-548. [PMID: 33369219 DOI: 10.1002/cplu.202000760] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2020] [Revised: 12/10/2020] [Indexed: 11/09/2022]
Abstract
A series of palladium nanoparticles (Pd NPs) intercalated montmorillonite clay catalysts is reported for hydrogenation of 3-diphenyl prop-2-en-1-imine under mild reaction conditions. Pd/clay catalyst was prepared by a simple wet-impregnation method, and the physicochemical properties were characterized extensively by various techniques including N2 adsorption, XRD, TEM, XPS and TPR etc., which showed the intercalation of active Pd NPs between the clay layers. The effect of reaction conditions such as catalyst loading, reaction time, temperature and H2 pressure is explored, and thereby a plausible mechanism is proposed. The optimum amount of 6 wt % Pd/clay catalyst showed significant catalytic activity to yield 3-phenyl propyl aniline with 100 % conversion and selectivity under 5 bar pressure and a shorter reaction period of 3.5 h at 100 °C. The developed catalytic system unveiled excellent reusability over five cycles and hence paved the way for industrial applications.
Collapse
Affiliation(s)
- Unnati Gupta
- Unnati Gupta, Dr. R. Krishnapriya and Prof. Rakesh K Sharma*, Sustainable Materials and Catalysis Research Laboratory (SMCRL), Department of Chemistry, Indian Institute of Technology Jodhpur, Jodhpur, Rajasthan, 342037, India
| | - R Krishnapriya
- Unnati Gupta, Dr. R. Krishnapriya and Prof. Rakesh K Sharma*, Sustainable Materials and Catalysis Research Laboratory (SMCRL), Department of Chemistry, Indian Institute of Technology Jodhpur, Jodhpur, Rajasthan, 342037, India
| | - Rakesh K Sharma
- Unnati Gupta, Dr. R. Krishnapriya and Prof. Rakesh K Sharma*, Sustainable Materials and Catalysis Research Laboratory (SMCRL), Department of Chemistry, Indian Institute of Technology Jodhpur, Jodhpur, Rajasthan, 342037, India
| |
Collapse
|