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Phosphorus pentoxide (PO)/metal chloride mixtures could significantly improve 5-HMF yield and selectivity for the catalytic conversion of fructose under mild conditions, whereas neither PO nor tested metal chloride alone gave reasonable performances. A maximum 5-HMF yield of 75% with ∼85% selectivity could be achieved within 30 min at 80 °C.
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http://dx.doi.org/10.1039/c8ra07027j | DOI Listing |
J Agric Food Chem
September 2025
The State Key Laboratory of Food Science and Resources, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China.
This study develops a multienzyme coimmobilization strategy on NTA-functionalized ZIF-8-coated magnetic nanoparticles (NZMNPs) for efficient d-allulose synthesis. Under optimized immobilization conditions (enzyme-to-carrier ratio: 1:50 w/w, 30 min immobilization), the system achieved an immobilization efficiency of 93.7% along with 107.
View Article and Find Full Text PDFJ Phys Chem A
September 2025
Department of Chemistry, Tsinghua University, Beijing 100084, China.
A series of Cu-based single-atom catalysts (SACs) with asymmetric coordination were designed to accelerate lithium-sulfur (Li-S) chemistry. The electronegativity contrast from the dopant induces a localized electronic asymmetry that amplifies Jahn-Teller distortion at the Cu center. This distortion profoundly modulates the Cu 3d electronic structure and its interaction with Li-S intermediates.
View Article and Find Full Text PDFOrg Lett
September 2025
School of Chemistry and Chemical Engineering, Hefei University of Technology and Anhui Province Key Laboratory of Value-Added Catalytic Conversion and Reaction Engineering, Hefei 230009, China.
Under visible-light photocatalysis facilitated by cobalt coordination, a highly regio- and stereoselective cycloisomerization reaction of 1,6-enynes has been developed. This method enables the efficient synthesis of various skipped 1,4-diene products with excellent stereoselectivity, using commercially available cobalt catalysts, ligands, and reagents. Notably, the reaction exhibits remarkable regioselectivity (>20:1), stereoselectivity (/ > 20:1), and high yields (58-92%) under mild conditions, along with a broad substrate scope and good functional group tolerance.
View Article and Find Full Text PDFSmall
September 2025
State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, P. R. China.
Polyethylene terephthalate (PET) glycolysis presents an effective solution to address plastic pollution while promoting the utilization of renewable resources. It is highly important to gain in-depth insights into the identification of the well-defined active sites and the structure-activity relationships in PET glycolysis. Herein, PW@UiO-67 with different exposed crystal facets, i.
View Article and Find Full Text PDFACS Electrochem
September 2025
School of Chemistry, University of Nottingham, University Park, Nottingham NG7 2RD, UK.
The study of electrochemical oxidations has wide-ranging implications, from the development of new electrocatalysts for fuel cells for energy conversion, to the synthesis of fine chemicals. 2,2,6,6-Tetramethylpiperidine-1-oxyl (TEMPO) has been used for decades as a sustainable, metal-free mediator for chemical oxidations and is now being used for electrochemical oxidations. We describe here a novel approach to TEMPO-mediated electrooxidations, in which the chemical input and waste generated during electrooxidations of alcohols are minimized by using a multifunctional room temperature ionic liquid (RTIL) to facilitate flow electrosynthesis.
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