Kinetic Modeling for the “One-Pot” Hydrogenolysis of Cellulose to Glycols over Ru@Fe3O4/Polymer Catalyst

Despite numerous works devoted to the cellulose hydrogenolysis process, only some of them describe reaction kinetics. This is explained by the complexity of the process and the simultaneous behavior of different reactions. In this work, we present the results of the kinetic study of glucose hydrogenolysis into ethylene- and propylene glycols in the presence of Ru@Fe3O4/HPS catalyst as a part of the process of catalytic conversion of cellulose into glycols. The structure of the Ru-containing magnetically separable Ru@Fe3O4/HPS catalysts supported on the polymeric matrix of hypercrosslinked polystyrene was studied to propose the reaction scheme. As a result of this study, a formal description of the glucose hydrogenolysis process into glycols was performed. Based on the data obtained, the mathematical model of the glucose hydrogenolysis kinetics in the presence of Ru@Fe3O4/HPS was developed and the parameter estimation was carried out. The synthesized catalyst was found to be characterized by the enhanced magnetic properties and higher catalytic activity in comparison with previously developed catalytic systems (i.e., on the base of SiO2). The summarized selectivity towards the glycols formation was found to be ca. 42% at 100% of the cellulose conversion in the presence of Ru@Fe3O4/HPS.

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Merging gold catalysis, organocatalytic oxidation, and Lewis acid catalysis for chemodivergent synthesis of functionalized oxazoles from N-propargylamides

Chemical Communications ◽

10.1039/c7cc05746f ◽

2017 ◽

Vol 53 (75) ◽

pp. 10366-10369 ◽

Cited By ~ 20

Author(s):

Shaoyu Mai ◽

Changqing Rao ◽

Ming Chen ◽

Jihu Su ◽

Jiangfeng Du ◽

...

Keyword(s):

Transition Metal ◽

Lewis Acid ◽

Lewis Acids ◽

Acid Catalysis ◽

Gold Catalysis ◽

One Pot ◽

Catalytic Systems ◽

One Pot Synthesis ◽

The One ◽

Cationic Gold

Novel catalytic systems consisting of cationic gold complexes, N-hydroxyphthalimide (NHPI), and transition-metal-based Lewis acids have been developed for the one-pot synthesis of functionalized oxazoles.

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Mesoporous Activated Carbon Supported Ru Catalysts to Efficiently Convert Cellulose into Sorbitol by Hydrolytic Hydrogenation

Energies ◽

10.3390/en13174394 ◽

2020 ◽

Vol 13 (17) ◽

pp. 4394

Author(s):

Fatima-Zahra Azar ◽

M. Ángeles Lillo-Ródenas ◽

M. Carmen Román-Martínez

Keyword(s):

Carbon Materials ◽

Activated Carbons ◽

One Pot ◽

Cellulose Conversion ◽

Hydrolytic Hydrogenation ◽

Ru Nanoparticles ◽

Two Samples ◽

Materials Used ◽

The One ◽

By Products

Catalysts consisting of Ru nanoparticles (1 wt%), supported on mesoporous activated carbons (ACs), were prepared and used in the one-pot hydrolytic hydrogenation of cellulose to obtain sorbitol. The carbon materials used as supports are a pristine commercial mesoporous AC (named SA), and two samples derived from it by sulfonation or oxidation treatments (named SASu and SAS, respectively). The catalysts have been thoroughly characterized regarding both surface chemistry and porosity, as well as Ru electronic state and particle size. The amount and type of surface functional groups in the carbon materials becomes modified as a result of the Ru incorporation process, while a high mesopore volume is preserved upon functionalization and Ru incorporation. The prepared catalysts have shown to be very active, with cellulose conversion close to 50% and selectivity to sorbitol above 75%. The support functionalization does not lead to an improvement of the catalysts’ behavior and, in fact, the Ru/SA catalyst is the most effective one, with about 50% yield to sorbitol, and a very low generation of by-products.

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On the Effectiveness of Zeolite-Based Catalysts in the CO2 Recycling to DME: State of the Art and Perspectives

10.20944/preprints201711.0071.v1 ◽

2017 ◽

Author(s):

Enrico Catizzone ◽

Giuseppe Bonura ◽

Massimo Migliori ◽

Francesco Frusteri ◽

Girolamo Giordano

Keyword(s):

Industrial Development ◽

Heterogeneous Catalysts ◽

Environmental Issues ◽

Oxide Phase ◽

One Pot ◽

Catalytic Systems ◽

Warming Climate ◽

New Concepts ◽

Co2 Recycling ◽

The One

Starting from the environmental issues related to global warming, climate change and reduction of greenhouse gas emissions, this review paper describes how CO2 recycling can represent a challenging strategy suitable to explore new concepts and opportunities for catalytic and industrial development. In this view, the production of dimethyl ether (DME) from catalytic hydrogenation of CO2 appears as a viable technology, able to meet also the ever-increasing need for alternative environmentally-friendly fuels and energy carriers. Basic considerations on thermodynamic aspects controlling DME production from CO2 are presented, then summarizing the main catalytic systems developed in such a field. Special attention is paid on the role assumed during last years by zeolite-based systems, either in the methanol-to-DME dehydration step or in the one-pot CO2-to-DME hydrogenation. On the whole, the productivity of DME results significantly to be dependent on several catalyst features, linked not only to the metal-oxide phase responsible for CO2 activation/hydrogenation, but also to specific properties of the zeolites (i.e., topology, porosity, surface area, acidity, interaction with active metals, distributions of metal particles, …) influencing activity and stability of hybridized bifunctional heterogeneous catalysts.

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Supported l-tryptophan on Fe3O4@SiO2 as an efficient and magnetically separable catalyst for one-pot construction of spiro[indene-2,2′-naphthalene]-4′-carbonitrile derivatives

RSC Advances ◽

10.1039/d1ra07654j ◽

2022 ◽

Vol 12 (3) ◽

pp. 1319-1330

Author(s):

Aref Ghasemi-Ghahsareh ◽

Javad Safaei-Ghomi ◽

Hourieh Sadat Oboudatian

Keyword(s):

Magnetic Nanoparticles ◽

Functionalized Silica ◽

Magnetic Nanocatalyst ◽

One Pot ◽

Magnetically Separable Catalyst ◽

Magnetically Separable ◽

The One

l-Tryptophan functionalized silica-coated magnetic nanoparticles were prepared and evaluated as a magnetic nanocatalyst for the synthesis of spiro[indene-2,2′-naphthalene]-4′-carbonitrile derivatives through the one-pot four-component reaction.

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Synthesis and characterization of nano-copper ferrite as a magnetically separable catalyst for the one-pot synthesis of 2,4,5-trisubstituted and 1,2,4,5-tetrasubstituted imidazoles under solvent-free condition

Inorganic and Nano-Metal Chemistry ◽

10.1080/15533174.2016.1212223 ◽

2016 ◽

Vol 47 (5) ◽

pp. 666-671 ◽

Cited By ~ 7

Author(s):

Firouzeh Nemati ◽

Ali Elhampour ◽

Mahshid Bagheri Natanzi

Keyword(s):

Synthesis And Characterization ◽

Copper Ferrite ◽

One Pot ◽

Free Condition ◽

Solvent Free Condition ◽

Magnetically Separable Catalyst ◽

Magnetically Separable ◽

The One ◽

Tetrasubstituted Imidazoles

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[AcMIM]FeCl4: A Magnetically Separable Organocatalyst for the Clean Synthesis of Tetrahydrobenzo[b]pyran Derivatives

Current Organocatalysis ◽

10.2174/2213337206666181126114820 ◽

2019 ◽

Vol 6 (2) ◽

pp. 177-182 ◽

Cited By ~ 2

Author(s):

Arijit Saha ◽

Soumen Payra ◽

Archana Asatkar ◽

Ashok Raj Patel ◽

Subhash Banerjee

Keyword(s):

Ionic Liquid ◽

Catalytic Activity ◽

Reusable Catalyst ◽

Organic Transformations ◽

One Pot ◽

Green Approach ◽

Clean Synthesis ◽

Magnetically Separable ◽

The One ◽

High Spin Iron

Background: Recently, organic synthesis using ionic liquids (ILs) via green approach has attracted considerable attention to address the problem associated with environmental pollution. Magnetization of ILs provides added advantages of separation by external magnet. This can be accomplished by incorporation of high-spin iron(III) in the form of tetrachloro or tetrabromoferrate( III). Thus, synthesis of novel magnetically separable ILs for organic transformations is highly desirable. Results: [AcMIm]FeCl4 ionic liquid showed excellent catalytic activity in the one pot threecomponent synthesis tetrahydrobenzo[b]pyran derivatives at room temperature in excellent yields (94-98 %) within short reaction time (15-20 min.). The ILs were recovered and reused for at least six times with the minimum loss of catalytic activity. Methods: Here, we have demonstrated the excellent catalytic activity of acid functionalized magnetic Ils, [AcMIm]FeCl4 in one-pot multicomponent reactions for the synthesis of biologically important tetrahydrobenzo[b]pyran derivatives. Conclusion: A facile and convenient methodology has been developed for the synthesis of bio-active tetrahydrobenzo[b]pyran derivatives using [AcMIm]FeCl4 ionic liquid as an sufficient and reusable catalyst under environment-benign conditions.

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Magnetic nanoparticles-supported tungstic acid (MNP-TA): an efficient magnetic recyclable catalyst for the one-pot synthesis of spirooxindoles in water

RSC Advances ◽

10.1039/c4ra12976h ◽

2015 ◽

Vol 5 (3) ◽

pp. 2223-2230 ◽

Cited By ~ 33

Author(s):

Ali Khalafi-Nezhad ◽

Masoumeh Divar ◽

Farhad Panahi

Keyword(s):

Magnetic Nanoparticles ◽

Tungstic Acid ◽

Recyclable Catalyst ◽

One Pot ◽

One Pot Synthesis ◽

Catalytic Application ◽

Magnetically Separable Catalyst ◽

Magnetically Separable ◽

The One ◽

Magnetic Recyclable

This paper reports the preparation, characterization and catalytic application of a novel, magnetically separable catalyst consisting of tungstic acid supported on silica coated magnetic nanoparticles.

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Three-component condensation reaction of various aldehydes, dimedone and malononitrile catalyzed by boric acid in water in comparison with multifunctional ionic liquids as green catalytic systems

Zeitschrift für Naturforschung B ◽

10.1515/znb-2018-0101 ◽

2018 ◽

Vol 73 (10) ◽

pp. 707-712

Author(s):

Ardeshir Khazaei ◽

Heidar Ali Alavi Nik ◽

Ahmad Reza Moosavi-Zare ◽

Hadis Afshar-Hezarkhani

Keyword(s):

Ionic Liquids ◽

Boric Acid ◽

Ammonium Acetate ◽

Condensation Reaction ◽

One Pot ◽

Water Separation ◽

Catalytic Systems ◽

Hydronium Ion ◽

Solvent Free Conditions ◽

The One

AbstractTriethanol ammonium acetate ([TEAH]+[OAc]−) and triethanol ammonium formate ([TEAH]+[HCOO]−) as multifunctional ionic liquids and catalysts were successfully applied for the preparation of tetrahydrobenzo[b]pyrans by the one-pot three-component condensation reaction of various aldehydes, dimedone and malononitrile under solvent-free conditions. These reactions were also tested using boric acid in water. In this catalytic system, by the reaction of water with boric acid, the hydronium ion caused by water separation can catalyze the reaction.

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Copper-Based Bulk and Nano-Catalysts for the One-Pot Propargylamine Synthesis

Mini-Reviews in Organic Chemistry ◽

10.2174/1570193x15666180430151658 ◽

2019 ◽

Vol 16 (4) ◽

pp. 361-368 ◽

Cited By ~ 1

Author(s):

Soheil Sayyahi ◽

Seyyed Jafar Saghanezhad

Keyword(s):

Catalyst System ◽

Transition Metal Catalysts ◽

Biologically Active ◽

One Pot ◽

Rapid Preparation ◽

Catalytic Systems ◽

Great Utility ◽

The One ◽

A3 Coupling ◽

Nano Catalysts

Propargylamines are prominent components strikethrough as precursors for the synthesis of miscellaneous nitrogen-containing compounds, such as allylamines, pyrrolidines, pyrroles and oxazoles or as intermediates in the preparation of a various natural product, biologically active and pharmaceutical compounds. The catalytic coupling of the aldehyde–alkyne–amine (A3 coupling) has shown great utility in the simple and rapid preparation of propargylamines in broadly tolerant and highly tunable reaction conditions. In this respect, various catalytic systems using transition metal catalysts have been developed. Based on a literature survey, Cu catalysts have promoted this field substantially via development of new methods for the synthesis of propargylamines. This review will cover copper-based catalyst system reported for the synthesis of propargylamine derivatives until 2017.

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