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Catalytic Green Reductions and Oxidations, 2nd Edition

A special issue of Molecules (ISSN 1420-3049). This special issue belongs to the section "Organic Chemistry".

Deadline for manuscript submissions: 31 October 2025 | Viewed by 512

Special Issue Editor


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Guest Editor
College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, China
Interests: green organic synthesis and catalysis
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Special Issue Information

Dear Colleagues,

Reductions and oxidations are among the most fundamental yet important transformations in life activities, pharmaceutical synthesis, and industrial manufacturing, among other numerous fields. Those satisfying green chemistry principles and enabled by catalytic technologies are highly desired.

In this Special Issue, we welcome contributions focused on the catalytic green reductions and oxidations of carbon-based feedstocks (organic chemicals or carbon dioxide) from various fields. The reactions can occur at any element or any functional group within the molecules you target. Please also note that the reductions or oxidations are not narrowly limited to the incorporation or removal of hydrogen or oxygen. Numerous functionalization or defunctionalization processes are encouraged. Contributions are welcome to be related to any subfield of catalysis, organocatalysis or metal catalysis, heterocatalysis or homocatalysis, photocatalysis or electrocatalysis, and others.

Within the scope of catalytic green reductions and oxidations, potential topics of interest include the design and synthesis of catalysts, the development of new catalytic systems, organic synthetic methodologies, catalytic mechanistic studies, and the synthesis of natural products or pharmaceutical intermediates. We welcome the submission of full papers, communications, and comprehensive reviews.

Prof. Dr. Zhanhui Yang
Guest Editor

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. Molecules is an international peer-reviewed open access semimonthly 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

  • green chemistry
  • redox reactions
  • organocatalysis
  • metal catalysis
  • heterocatalysis
  • homocatalysis
  • photocatalysis
  • electrocatalysis

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Published Papers (1 paper)

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Research

29 pages, 7438 KiB  
Article
Comparison of High-Efficiency MgO/Na2CO3 and MgO/K2CO3 as Heterogeneous Solid Base Catalysts for Biodiesel Production from Soybean Oil
by Xiangyang Li, Xunxiang Jia, Weiji Li, Shufan Jia, Siwei Zhang, Jiliang Song and Jiao Wang
Molecules 2025, 30(13), 2876; https://doi.org/10.3390/molecules30132876 - 7 Jul 2025
Viewed by 331
Abstract
As a renewable alternative to fossil fuels, the industrial production of biodiesel urgently requires the development of efficient and recyclable solid base catalysts. In this study, the physicochemical properties and catalytic performance differences between MgO/Na2CO3 and MgO/K2CO3 [...] Read more.
As a renewable alternative to fossil fuels, the industrial production of biodiesel urgently requires the development of efficient and recyclable solid base catalysts. In this study, the physicochemical properties and catalytic performance differences between MgO/Na2CO3 and MgO/K2CO3 catalysts were systematically compared using soybean oil as the raw material. By regulating the calcination temperature (500–700 °C), alcohol-to-oil ratio (3:1–24:1), and metal carbonate loading (10–50%), combined with N2 adsorption–desorption, CO2-TPD, XRD, SEM-EDS, and cycling experiments, the regulatory mechanisms of the ionic radius differences between sodium and potassium on the catalyst structure and performance were revealed. The results showed that MgO/Na2CO3-600 °C achieved a FAME yield of 97.5% under optimal conditions, which was 1.7% higher than MgO/K2CO3-600 °C (95.8%); this was attributed to its higher specific surface area (148.6 m2/g vs. 126.3 m2/g), homogeneous mesoporous structure, and strong basic site density. In addition, the cycle stability of MgO/K2CO3 was significantly lower, retaining only 65.2% of the yield after five cycles, while that of MgO/Na2CO3 was 88.2%. This stability difference stems from the disparity in their solubility in the reaction system. K2CO3 has a higher solubility in methanol (3.25 g/100 g at 60 °C compared to 1.15 g/100 g for Na2CO3), which is also reflected in the ion leaching rate (27.7% for K+ versus 18.9% for Na+). This study confirms that Na+ incorporation into the MgO lattice can optimize the distribution of active sites. Although K+ surface enrichment can enhance structural stability, the higher leaching rate leads to a rapid decline in catalyst activity, providing a theoretical basis for balancing catalyst activity and durability in sustainable biodiesel production. Full article
(This article belongs to the Special Issue Catalytic Green Reductions and Oxidations, 2nd Edition)
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