Special Issue "Microflow (Bio)Catalysis"

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

Deadline for manuscript submissions: closed (30 November 2022) | Viewed by 552

Special Issue Editors

Dr. Ana Jurinjak Tušek
E-Mail Website
Guest Editor
Faculty of Food Technology and Biotechnology, University of Zagreb, HR-10000 Zagreb, Croatia
Interests: microfluidics; biotransfomations; mathematical modeling; optimization
Dr. Anita Šalić
E-Mail Website
Guest Editor
Faculty of Chemical Engineering and Technology, University of Zagreb, HR-10000 Zagreb, Croatia
Interests: biocatalysis; microfluidics; enzyme kinetic; bioprocess engineering and development
Dr. Davor Valinger
E-Mail Website
Guest Editor
Faculty of Food Technology and Biotechnology, University of Zagreb, HR-10000 Zagreb, Croatia
Interests: microfluidics; biotransfomations; mathematical modeling; process automatisation
Prof. Dr. Bruno Zelić
E-Mail Website
Guest Editor
Faculty of Chemical Engineering and Technology, University of Zagreb, HR-10000 Zagreb, Croatia
Interests: microreactors and microdevices; biodiesel; biogas; downstream processes; solid state fermentation; fermentation; enzymes; enzyme kinetics; mathematical modeling
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The development of the sustainable (bio)catalytic process includes research regarding (bio)catalyst selection and optimization, process conditions selection and optimization, as well as the reactor system selection and optimization. To achieve desirable productivity all three steps are equally important. Selected (bio)catalyst has to efficiently accept substrate, preferably under mild conditions (for example, ambient temperature, pressure, pH) and insure maximum product yield. Moreover, selected reactor system has to ensure simple process control.

Over the years, researchers showed numerous advantages of using microscale reactor systems for (bio)catalytic processes. Miniaturization of reaction space ensures time, space, and, moreover, costs reduction and ensures high volume productivities while operating in continuous mode. According to available literature, over 70% of fine chemical production processes would improve by continuous operation mode and for more than 50% of them microfluidic system would be the most suitable reactor system. The micro dimension of channels (dimeters under a millimeter in size) ensure numerous advantages over traditionally used macro reactor, for example: (i) use of small chemical and (bio)catalysts quantities, (ii) large surface to volume ratio (beneficial for extraction processes, as well as for the (bio)catalytic processes), (iii) efficient heat and mass transfer, (iv) predominantly laminar flow rate (Re<100), (v) possibility of performing single or multiphase reactions, etc. All listed advantages provide continuous substrate(s) and (bio)catalyst fed and continues products removal to prevents possible inhibitions. Moreover, to achieve sustainable (bio)catalytic process in a microfluidic device (bio)catalyst immobilization for their repeated usage was also introduced.

Furthermore, important aspect of research in field of microfluidic (bio)catalytic processes is also focused on application of simple or complex mathematical models. An efficient and reliable mathematical model includes hydrodynamics and kinetics of the process thus ensuring precise prediction of process productivity and allows the reduction of necessary experiments.

Based on everything previously stated, this Special Issue welcomes papers in area of:

  • Microfluidic devices for (bio)catalytic processes;
  • Flow description and control in microfluidic devices;
  • Biotransformation’s with enzymes or whole cells;
  • (Bio)catalyst immobilization in microfludic systems;
  • Application of green solvents for (bio)catalysis in microfluidic systems;
  • Process optimization;
  • Multi-enzyme cascades and process integration;
  • Kinetic studies and mathematical modeling;
  • On-line monitoring of (bio)catalysis in microfluidic systems.

Dr. Ana Jurinjak Tušek
Dr. Anita Šalić
Dr. Davor Valinger
Prof. Dr. Bruno Zelić
Guest Editors

Manuscript Submission Information

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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 2200 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

  • (bio)catalysis in microfluidics
  • hydrodynamics
  • (bio)catalyst immobilization
  • process optimization
  • mathematical modeling
  • on-line monitoring of processes

Published Papers (1 paper)

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Research

Article
Photocatalytic Transformations of the Resveratrol Derivative in Microflow Reactor
Catalysts 2022, 12(12), 1510; https://doi.org/10.3390/catal12121510 - 24 Nov 2022
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Abstract
A simple and efficient protocol is utilized for the transformation studies of a thiophene analog of E-resveratrol by photocatalytic oxygenation using an anionic and a cationic free-base porphyrin, as well as their manganese(III) complexes. The starting substrate was chosen as a representative [...] Read more.
A simple and efficient protocol is utilized for the transformation studies of a thiophene analog of E-resveratrol by photocatalytic oxygenation using an anionic and a cationic free-base porphyrin, as well as their manganese(III) complexes. The starting substrate was chosen as a representative of heterostilbenes with proven good antioxidant activity. The experiments were carried out in two photoreactor types (batch and microflow reactor) to investigate the impact of the reactor type and design on conversion and photoproduct composition. NMR spectroscopy and UHPLC/MS analyses were applied for the identification and quantification of four photoproducts (Z-1, 2, 3, and 4), results of isomerization, dimerization, cyclization, and oxygenation. Different yields of photoproducts were obtained in a batch reactor and microflow reactor. In the experiments performed in a microflow reactor, Z-1 was most dominant because it was constantly removed from the reaction mixture. Therefore, the formation of other products (2, 3, 4, and undefined) whose precursor is Z-1 was avoided. This was not the case in the experiments performed in a batch reactor. Additionally, all the reactions tested were significantly accelerated in a microflow reactor, making it the preferred reactor type and design for the photocatalytic transformation of resveratrol derivative. Full article
(This article belongs to the Special Issue Microflow (Bio)Catalysis)
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