The relatively stable MOFs Alfum, MIL-160, DUT-4, DUT-5, MIL-53-TDC, MIL-53, UiO-66, UiO-66-NH, UiO-66(F), UiO-67, DUT-67, NH-MIL-125, MIL-125, MIL-101(Cr), ZIF-8, ZIF-11 and ZIF-7 were studied for their C sorption properties. An understanding of the uptake of the larger C molecules cannot simply be achieved with surface area and pore volume (from N sorption) but involves the complex micropore structure of the MOF. The maximum adsorption capacity at p p = 0.9 was shown by DUT-4 for benzene, MIL-101(Cr) for cyclohexane and DUT-5 for -hexane. In the low-pressure range from p p = 0.1 down to 0.05 the highest benzene uptake is given by DUT-5, DUT-67/UiO-67 and MIL-101(Cr), for cyclohexane and -hexane by DUT-5, UiO-67 and MIL-101(Cr). The highest uptake capacity at p p = 0.02 was seen with MIL-53 for benzene, MIL-125 for cyclohexane and DUT-5 for -hexane. DUT-5 and MIL-101(Cr) are the MOFs with the widest pore window openings/cross sections but the low-pressure uptake seems to be controlled by a complex combination of ligand and pore-size effect. IAST selectivities between the three binary mixtures show a finely tuned and difficult to predict interplay of pore window size with (critical) adsorptive size and possibly a role of electrostatics through functional groups such as NH.
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http://dx.doi.org/10.3390/nano12203614 | DOI Listing |
Acta Crystallogr E Crystallogr Commun
January 2025
Department of Applied Chemistry, Faculty of Science and Technology, Keio University, Hiyoshi 3-14-1, Kohoku-ku, Yokohama 223-8522, Japan.
The title compounds, CHO ( and ), are tetra-cyclic benzoates composed of a taxane ring with a fused dioxolane ring as the core skeleton. In compound , the five-membered dioxolane ring is essentially planar while the two cyclo-hexane rings and the cyclo-octane ring adopt chair and chair-chair forms, respectively, and there are three intra-molecular H⋯H short contacts. The corresponding ring conformations in are similar; however, one intra-molecular C-H⋯O inter-action and two H⋯H short contacts are observed, and the benzoyl and meth-oxy-methyl groups show orientational disorder.
View Article and Find Full Text PDFJ Am Chem Soc
January 2025
Department of Chemical Engineering, University of California, Santa Barbara, California 93106, United States.
AC plasmas directly excited within liquid hydrocarbons were investigated for the production of hydrogen and unsaturated C hydrocarbon in a recirculating liquid "jet" flow configuration. Arc discharges were excited at two different frequencies (60 Hz and 17.3 kHz) in C-C hydrocarbons (hexane, cyclohexane, benzene, toluene, and xylene) to produce H, CH, CH, and CH, along with liquid and solid carbon byproducts.
View Article and Find Full Text PDFMolecules
November 2024
Department of Food Science, Fu Jen University, New Taipei City 242, Taiwan.
Goji berry ( L.), also known as wolfberry, is a traditional Chinese medicinal herb widely utilized as a functional food ingredient throughout East Asia. In this study, we developed a rapid high performance liquid chromatography-diode array detection (HPLC-DAD) method for the simultaneous separation of carotenoids in goji berries.
View Article and Find Full Text PDFPLoS One
December 2024
Chulabhorn Graduate Institute, Program in Chemical Sciences, Bangkok, Thailand.
Hyaluronidase has been emerging as a potential target for cancer treatment. Herein, the anticancer effects against A549 NSCLC cells and hyaluronidase inhibitory activity of the ethanol extract of Xenostegia tridentata (L.) D.
View Article and Find Full Text PDFDalton Trans
January 2025
Department of Chemistry, School of Natural Sciences, Shiv Nadar Institution of Eminence Deemed to be University, Delhi NCR, Gautam Buddha Nagar, Dadri, UP-201314, India.
Water-soluble nickel(II)-guanidine-based complexes successfully catalyzed the C-H chlorination of a series of hydrocarbons in the presence of NaOCl and acetic acid in water-chloroform (7 : 3, biphasic condition) at room temperature. Majorly chlorinated products (TON ∼680 for cyclohexane) were obtained. Furthermore, C-H bond bromination of cyclohexane, -hexane, and toluene was also carried out using generation of NaOBr.
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