Catalytic Transformation of Renewables (Olefin, Bio-sourced, etc.)—Series II

A special issue of Catalysts (ISSN 2073-4344). This special issue belongs to the section "Biomass Catalysis".

Deadline for manuscript submissions: closed (28 February 2022) | Viewed by 9297

Special Issue Editors


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Guest Editor
Dipartimento di Chimica Industriale "Toso Montanari", Alma Mater Studiorum Università di Bologna, Viale Risorgimento 4, 40136 Bologna, Italy
Interests: metal nanoparticles; heterogeneous catalysis; nanostructured metal oxides; heteropolyacids; biomass transformation; HMF oxidation
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
Dipartimento di Chimica Industriale "Toso Montanari", Alma Mater Studiorum Università di Bologna, Viale Risorgimento 4, 40136 Bologna, Italy
Interests: metal nanoparticles; heterogeneous catalysis; nanostructured metal oxides; biomass transformation; in situ and operando techniques
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

This issue is a continuation of the previous successful Special Issue “Catalytic Transformation of Renewables (Olefin, Bio-sourced, et. al)”.

In recent decades, a wide variety of biomass-derived chemicals have emerged as key platform chemicals for the production of fine chemicals and liquid/gas fuels. Heterogeneous catalysts are the preferred option for most developed and proposed catalytic processes. A range of heterogeneous catalysts have been evaluated for effective biomass conversion, such as supported metal nanoparticles and mixed metal oxides and zeolites, where the control of particle size, porosity, and acid-basic and redox properties are crucial to providing active, stable, and selective heterogeneous catalysts. Moreover, the crucial roles of the solvent, choice of reactor design, and chemical processes for controlling activity, selectivity, and deactivation phenomena have been demonstrated.

We invite the scientific community to submit their contributions in the form of original research articles and review articles that could seek an excellent interaction between solid catalysts and their applications in biomass transformation on selected topics including catalytic, photocatalytic, and electrocatalytic processes. We are particularly interested in articles describing:

  1. Furfural transformation;
  2. HMF transformation;
  3. Glucose transformation;
  4. Levulinic acid transformation;
  5. Glycerol transformation;
  6. Catalytic pyrolysis of lignocellulosic biomass;
  7. Bioethanol production from biomass;
  8. Olefin production from biomass-derived molecules;
  9. Deactivation studies using in situ and ex situ spectroscopic techniques;
  10. Computational modeling and simulation of biomass-derived processes;
  11. Biomass reforming processes for the production of fuels and chemicals.

Prof. Dr. Nikolaos Dimitratos
Prof. Dr. Stefania Albonetti
Dr. Tommaso Tabanelli
Guest Editors

Manuscript Submission Information

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Keywords

  • Biomass transformation
  • Fine chemicals and fuels
  • Heterogeneous catalysts
  • Deactivation studies
  • In situ/operando studies
  • Catalytic, photocatalytic, and electrocatalytic processes

Published Papers (3 papers)

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Research

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19 pages, 5510 KiB  
Article
Temperature-Dependent Activity of Gold Nanocatalysts Supported on Activated Carbon in Redox Catalytic Reactions: 5-Hydroxymethylfurfural Oxidation and 4-Nitrophenol Reduction Comparison
by Stefano Scurti, Alessandro Allegri, Francesca Liuzzi, Elena Rodríguez-Aguado, Juan Antonio Cecilia, Stefania Albonetti, Daniele Caretti and Nikolaos Dimitratos
Catalysts 2022, 12(3), 323; https://doi.org/10.3390/catal12030323 - 11 Mar 2022
Cited by 6 | Viewed by 2434
Abstract
In this study, the temperature-dependent activity of Au/AC nanocatalysts in redox catalytic reactions was investigated. To this end, a series of colloidal gold catalysts supported on activated carbon and titania were prepared by the sol immobilization method employing polyvinyl alcohol as a polymeric [...] Read more.
In this study, the temperature-dependent activity of Au/AC nanocatalysts in redox catalytic reactions was investigated. To this end, a series of colloidal gold catalysts supported on activated carbon and titania were prepared by the sol immobilization method employing polyvinyl alcohol as a polymeric stabilizer at different hydrolysis degrees. The as-synthesized materials were widely characterized by spectroscopic analysis (XPS, XRD, and ATR-IR) as well as TEM microscopy and DLS/ELS measurements. Furthermore, 5-hydroxymethylfurfural (HMF) oxidation and 4-nitrophenol (4-NP) reduction were chosen to investigate the catalytic activity as a model reaction for biomass valorization and wastewater remediation. In particular, by fitting the hydrolysis degree with the kinetic data, volcano plots were obtained for both reactions, in which the maximum of the curves was represented relative to hydrolysis intermediate values. However, a comparison of the catalytic performance of the sample Au/AC_PVA-99 (hydrolysis degree of the polymer is 99%) in the two reactions showed a different catalytic behavior, probably due to the detachment of polymer derived from the different reaction temperature chosen between the two reactions. For this reason, several tests were carried out to investigate deeper the observed catalytic trend, focusing on studying the effect of the reaction temperature as well as the effect of support (metal–support interaction) by immobilizing Au colloidal nanoparticles on commercial titania. The kinetic data, combined with the characterization carried out on the catalysts, confirmed that changing the reaction conditions, the PVA behavior on the surface of the catalysts, and, therefore, the reaction outcome, is modified. Full article
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12 pages, 1978 KiB  
Article
Theoretical Investigation of the Deactivation of Ni Supported Catalysts for the Catalytic Deoxygenation of Palm Oil for Green Diesel Production
by Sanaa Hafeez, Sultan M Al-Salem, Kyriakos N Papageridis, Nikolaos D Charisiou, Maria A Goula, George Manos and Achilleas Constantinou
Catalysts 2021, 11(6), 747; https://doi.org/10.3390/catal11060747 - 18 Jun 2021
Cited by 8 | Viewed by 2808
Abstract
For the first time, a fully comprehensive heterogeneous computational fluid dynamic (CFD) model has been developed to predict the selective catalytic deoxygenation of palm oil to produce green diesel over an Ni/ZrO2 catalyst. The modelling results were compared to experimental data, and [...] Read more.
For the first time, a fully comprehensive heterogeneous computational fluid dynamic (CFD) model has been developed to predict the selective catalytic deoxygenation of palm oil to produce green diesel over an Ni/ZrO2 catalyst. The modelling results were compared to experimental data, and a very good validation was obtained. It was found that for the Ni/ZrO2 catalyst, the paraffin conversion increased with temperature, reaching a maximum value (>95%) at 300 °C. However, temperatures greater than 300 °C resulted in a loss of conversion due to the fact of catalyst deactivation. In addition, at longer times, the model predicted that the catalyst activity would decline faster at temperatures higher than 250 °C. The CFD model was able to predict this deactivation by relating the catalytic activity with the reaction temperature. Full article
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Review

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30 pages, 5045 KiB  
Review
Bioethanol Upgrading to Renewable Monomers Using Hierarchical Zeolites: Catalyst Preparation, Characterization, and Catalytic Studies
by Ploychanok Iadrat and Chularat Wattanakit
Catalysts 2021, 11(10), 1162; https://doi.org/10.3390/catal11101162 - 26 Sep 2021
Cited by 6 | Viewed by 3152
Abstract
Bioethanol is one of the most promising renewable resources for the production of important monomers. To date, there have been various processes proposed for bioethanol conversion to renewable monomers. In this review, the catalytic bioethanol upgrading to various types of monomers using hierarchical [...] Read more.
Bioethanol is one of the most promising renewable resources for the production of important monomers. To date, there have been various processes proposed for bioethanol conversion to renewable monomers. In this review, the catalytic bioethanol upgrading to various types of monomers using hierarchical zeolites as catalysts is illustrated, including the recent design and preparation of hierarchical zeolites for these catalytic processes. The characterizations of catalysts including textural properties, pore architectures, acidic properties, and active species are also exemplified. Moreover, the catalytic studies with various processes of monomer production from bioethanol including bioethanol dehydration, bioethanol to hydrocarbons, and bioethanol to butadiene are revealed in terms of catalytic activities and mechanistic studies. In addition, the future perspectives of these catalytic circumstances are proposed in both economic and sustainable development contexts. Full article
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