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Catalysts
Special Issues
Green Synthesis and Catalysis
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Green Synthesis and Catalysis

A special issue of Catalysts (ISSN 2073-4344). This special issue belongs to the section "Catalysis in Organic and Polymer Chemistry".

Deadline for manuscript submissions: closed (15 March 2020) | Viewed by 43329

Special Issue Editors

Dr. Filippo Perna

E-Mail Website
Guest Editor
Dipartimento di Farmacia-Scienze del Farmaco, Universita degli Studi di Bari, Bari, Italy
Interests: deep eutectic solvents; heterocycles synthesis; organometallic compounds; palladium catalysis; asymmetric synthesis
Dr. Antonio Salomone

E-Mail Website
Guest Editor
Dipartimento di Scienze e Tecnologie Biologiche ed Ambientali, Università del Salento, Lecce, Italy
Interests: palladium catalysis; deep eutectic solvents; multicomponent reactions; heterocycles synthesis; carbonylation reactions
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

To respond to the demand for more environmentally friendly chemical syntheses and processes, we can think, for example, of designing synthesis reactions with high atom economy or with minimal formation of secondary products. The use of catalysts can be advantageous to decrease the energy demand of a process, and the reduction of classic volatile and toxic organic solvents (VOCs) could be also a key point for the development of new environmentally friendly chemical processes. Furthermore, conducting the reactions in the absence of solvent or using non-conventional non-polluting solvents such as water, supercritical fluids, ionic liquids, and “deep eutectic solvents” (DESs) will increase the “greenness” of the syntheses. Particular attention is being paid to DESs which have raised increasing interest as a promising “green” alternative to VOCs for their unusual solvent properties in a variety of organic reactions as well as in process technology.

We invite the scientific community to submit their contributions as original research articles or review articles that describe new catalytic and biocatalytic processes, green synthesis, and known processes studied in conditions less harmful to the environment.

We are particularly interested in articles describing:

1) Synthetic methodologies in green solvents

2) Synthetic processes from renewable sources to valuable products

3) Bio-catalysis

4) Catalysts derived from natural sources

5) Chemical processes with reduced environmental impact: flow-chemistry, mechanochemistry

Dr. Perna Filippo
Dr. Antonio Salomone
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Catalysts is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Catalysis
  • Green synthesis
  • Deep Eutectic Solvents
  • Bio-catalysis
  • Solvent-free reaction
  • Flow chemistry
  • Ionic Liquids
  • Mechanochemistry

Published Papers (7 papers)

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Research

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16 pages, 2470 KiB  
Article
Synthesis of Stilbene and Chalcone Inhibitors of Influenza A Virus by SBA-15 Supported Hoveyda-Grubbs Metathesis
by Bruno Mattia Bizzarri, Angelica Fanelli, Davide Piccinino, Marta De Angelis, Camilla Dolfa, Anna Teresa Palamara, Lucia Nencioni, Claudio Zippilli, Marcello Crucianelli and Raffaele Saladino
Catalysts 2019, 9(12), 983; https://doi.org/10.3390/catal9120983 - 22 Nov 2019
Cited by 19 | Viewed by 3839
Abstract
Stilbene and chalcone derivatives with biological activity against influenza A virus have been synthesized by self-, cross-, and ring-closing metathesis procedures. The reactions were performed under environmentally friendly conditions using the second generation Hoveyda-Grubbs catalyst Aquamet SiPr after immobilization on Santa Barbara Amorphous [...] Read more.
Stilbene and chalcone derivatives with biological activity against influenza A virus have been synthesized by self-, cross-, and ring-closing metathesis procedures. The reactions were performed under environmentally friendly conditions using the second generation Hoveyda-Grubbs catalyst Aquamet SiPr after immobilization on Santa Barbara Amorphous mesoporous silicate SBA-15. Irrespective from the experimental conditions, the heterogeneous catalyst showed activity and selectivity comparable than the homogeneous counterpart for at least six successive runs without appreciable leaching of the active species. An appreciable antiviral activity against influenza A virus for some of the novel derivatives were observed, mainly involving the early stage of the virus-replication life-cycle. Full article
(This article belongs to the Special Issue Green Synthesis and Catalysis)
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14 pages, 6427 KiB  
Article
A 2.5D Electrode System Constructed of Magnetic Sb–SnO2 Particles and a PbO2 Electrode and Its Electrocatalysis Application on Acid Red G Degradation
by Mengmeng Yuan, Nasir Muhammad Salman, Hua Guo, Zhicheng Xu, Hao Xu, Wei Yan, Zhengwei Liao and Yu Wang
Catalysts 2019, 9(11), 875; https://doi.org/10.3390/catal9110875 - 23 Oct 2019
Cited by 27 | Viewed by 2857
Abstract
A novel electrode consisting of a Ti/PbO2 shell and Fe3O4/Sb–SnO2 particles was developed for electrochemical oxidation treatment of wastewater. Scanning electron microscope (SEM), X-ray diffraction (XRD), the current limiting method, toxicity experiments, and high-performance liquid chromatography were [...] Read more.
A novel electrode consisting of a Ti/PbO2 shell and Fe3O4/Sb–SnO2 particles was developed for electrochemical oxidation treatment of wastewater. Scanning electron microscope (SEM), X-ray diffraction (XRD), the current limiting method, toxicity experiments, and high-performance liquid chromatography were adopted to characterize its morphology, crystal structure, electrochemical properties, the toxicity of the wastewater, and hydroxyl radicals. Acid Red G (ARG), a typical azo dye, was additionally used to test the oxidation ability of the electrode. Results indicated that the 2.5D electrode could significantly improve the mass transfer coefficient and •OH content of the 2D electrode, thereby enhancing the decolorization, degradation, and mineralization effect of ARG, and reducing the toxicity of the wastewater. The experiments revealed that, at higher current density, lower dye concentration and higher temperature, the electrochemical oxidation of ARG favored. Under the condition of 50 mA/cm2, 25 °C, and 100 ppm, the ARG, Chemical Oxygen Demand (COD) and Total Organic Carbon (TOC) removal efficiency reached 100%, 65.89%, and 52.52%, respectively, and the energy consumption and the current efficiency were 1.06 kWh/g COD, 8.29%, and energy consumption for TOC and mineralization current efficiency were 3.81 kWh/g COD, 9.01%. Besides, the Fe3O4/Sb–SnO2 particles after electrolysis for 50 h still had remarkable stability. These results indicated that the ARG solution could be adequately removed on the 2.5D electrode, providing an effective method for wastewater treatment. Full article
(This article belongs to the Special Issue Green Synthesis and Catalysis)
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10 pages, 808 KiB  
Article
Plant-Mediated Enantioselective Transformation of Indan-1-One and Indan-1-ol
by Wanda Mączka, Katarzyna Wińska, Małgorzata Grabarczyk and Renata Galek
Catalysts 2019, 9(10), 844; https://doi.org/10.3390/catal9100844 - 12 Oct 2019
Cited by 6 | Viewed by 2332
Abstract
The main purpose of this work was to discover the way to obtain pure enantiomers of indan-1-ol. The subject of the study was the ability of the plant enzyme system to reduce the carbonyl group of indan-1-one, as well as to oxidize the [...] Read more.
The main purpose of this work was to discover the way to obtain pure enantiomers of indan-1-ol. The subject of the study was the ability of the plant enzyme system to reduce the carbonyl group of indan-1-one, as well as to oxidize the hydroxyl group of racemic indan-1-ol. Locally available fruit and vegetables were selected for stereoselective biotransformation. During the reduction, mainly alcohol of the S-(+)-configuration with a high enantiomeric excess (ee = 99%) was obtained. The opposite enantiomer was obtained in bioreduction with the apple and parsley. Racemic indan-1-ol was oxidized by all catalysts. The best result was obtained for the Jerusalem artichoke: Over 50% conversion was observed after 1 h, and the enantiomeric excess of unreacted R-(–)-indan1-ol was 100%. Full article
(This article belongs to the Special Issue Green Synthesis and Catalysis)
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11 pages, 3978 KiB  
Article
Montmorillonite K10-Catalyzed Solvent-Free Conversion of Furfural into Cyclopentenones
by Sonia Bonacci, Monica Nardi, Paola Costanzo, Antonio De Nino, Maria Luisa Di Gioia, Manuela Oliverio and Antonio Procopio
Catalysts 2019, 9(3), 301; https://doi.org/10.3390/catal9030301 - 26 Mar 2019
Cited by 25 | Viewed by 6132
Abstract
A simple and eco-friendly montmorillonite K10 (MK10)-catalyzed method for the synthesis of cyclopentenone derivatives from biomass-produced furfural has been developed. The versatility of this protocol is that the reactions were performed under solvent-free conditions and in a short reaction time under heterogeneous catalysis. [...] Read more.
A simple and eco-friendly montmorillonite K10 (MK10)-catalyzed method for the synthesis of cyclopentenone derivatives from biomass-produced furfural has been developed. The versatility of this protocol is that the reactions were performed under solvent-free conditions and in a short reaction time under heterogeneous catalysis. Montmorillonite K10 is mostly explored as a heterogeneous catalyst since it is inexpensive and environmentally friendly. Full article
(This article belongs to the Special Issue Green Synthesis and Catalysis)
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Review

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115 pages, 22188 KiB  
Review
Recent Progress with Pincer Transition Metal Catalysts for Sustainability
by Luca Piccirilli, Danielle Lobo Justo Pinheiro and Martin Nielsen
Catalysts 2020, 10(7), 773; https://doi.org/10.3390/catal10070773 - 11 Jul 2020
Cited by 69 | Viewed by 14533
Abstract
Our planet urgently needs sustainable solutions to alleviate the anthropogenic global warming and climate change. Homogeneous catalysis has the potential to play a fundamental role in this process, providing novel, efficient, and at the same time eco-friendly routes for both chemicals and energy [...] Read more.
Our planet urgently needs sustainable solutions to alleviate the anthropogenic global warming and climate change. Homogeneous catalysis has the potential to play a fundamental role in this process, providing novel, efficient, and at the same time eco-friendly routes for both chemicals and energy production. In particular, pincer-type ligation shows promising properties in terms of long-term stability and selectivity, as well as allowing for mild reaction conditions and low catalyst loading. Indeed, pincer complexes have been applied to a plethora of sustainable chemical processes, such as hydrogen release, CO2 capture and conversion, N2 fixation, and biomass valorization for the synthesis of high-value chemicals and fuels. In this work, we show the main advances of the last five years in the use of pincer transition metal complexes in key catalytic processes aiming for a more sustainable chemical and energy production. Full article
(This article belongs to the Special Issue Green Synthesis and Catalysis)
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14 pages, 1727 KiB  
Review
Fabrication of Monolithic Catalysts: Comparison of the Traditional and the Novel Green Methods
by Zexuan Wang, Kunfeng Zhao, Bei Xiao, Peng Gao, Dannong He, Ting Cai and Jing Yuan
Catalysts 2019, 9(12), 981; https://doi.org/10.3390/catal9120981 - 22 Nov 2019
Cited by 13 | Viewed by 4114
Abstract
Monolithic catalysts have great industrial application prospects compared to powdered catalysts due to their low pressure drop, the high efficiency of mass and heat transfer, and recyclability. Deposition of active phases on the monolithic carriers dramatically increases the utilization rate and has been [...] Read more.
Monolithic catalysts have great industrial application prospects compared to powdered catalysts due to their low pressure drop, the high efficiency of mass and heat transfer, and recyclability. Deposition of active phases on the monolithic carriers dramatically increases the utilization rate and has been attracting continuous attention. In this paper, we reviewed the traditional (impregnation, coating, and spraying) and novel (hydrothermal and electrodeposition) strategies of surface deposition integration, analyzed the advantages and disadvantages of both ways, and then prospected the possible directions for future development of integration technologies. Full article
(This article belongs to the Special Issue Green Synthesis and Catalysis)
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35 pages, 3747 KiB  
Review
Biocatalytic Synthesis of Natural Green Leaf Volatiles Using the Lipoxygenase Metabolic Pathway
by Sophie Vincenti, Magali Mariani, Jean-Christophe Alberti, Sabrina Jacopini, Virginie Brunini-Bronzini de Caraffa, Liliane Berti and Jacques Maury
Catalysts 2019, 9(10), 873; https://doi.org/10.3390/catal9100873 - 22 Oct 2019
Cited by 58 | Viewed by 7423
Abstract
In higher plants, the lipoxygenase enzymatic pathway combined actions of several enzymes to convert lipid substrates into signaling and defense molecules called phytooxylipins including short chain volatile aldehydes, alcohols, and esters, known as green leaf volatiles (GLVs). GLVs are synthesized from C18:2 and [...] Read more.
In higher plants, the lipoxygenase enzymatic pathway combined actions of several enzymes to convert lipid substrates into signaling and defense molecules called phytooxylipins including short chain volatile aldehydes, alcohols, and esters, known as green leaf volatiles (GLVs). GLVs are synthesized from C18:2 and C18:3 fatty acids that are oxygenated by lipoxygenase (LOX) to form corresponding hydroperoxides, then the action of hydroperoxide lyase (HPL) produces C6 or C9 aldehydes that can undergo isomerization, dehydrogenation, and esterification. GLVs are commonly used as flavors to confer a fresh green odor of vegetable to perfumes, cosmetics, and food products. Given the increasing demand in these natural flavors, biocatalytic processes using the LOX pathway reactions constitute an interesting application. Vegetable oils, chosen for their lipid profile are converted in natural GLVs with high added value. This review describes the enzymatic reactions of GLVs biosynthesis in the plant, as well as the structural and functional properties of the enzymes involved. The various stages of the biocatalytic production processes are approached from the lipid substrate to the corresponding aldehyde or alcoholic aromas, as well as the biotechnological improvements to enhance the production potential of the enzymatic catalysts. Full article
(This article belongs to the Special Issue Green Synthesis and Catalysis)
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