Search

The separation of ethylene (C2H4) from a mixture of ethane (C2H6), ethylene (C2H4), and acetylene (C2H2) at normal temperature and pressure is a significant challenge. The sieving effect of pores is powerless due to the similar molecular size and kinetic diameter of these molecules. We report a new modification method based on a stable ftw topological Zr‐MOF platform (MOF‐525). Introduction of a cyclopentadiene cobalt functional group led to new ftw‐type MOFs materials (UPC‐612 and UPC‐613), which increase the host‐guest interaction and achieve efficient ethylene purification from the mixture of hydrocarbon gases. The high performance of UPC‐612 and UPC‐613 for C2H2/C2H4/C2H6 separation has been verified by gas sorption isotherms, density functional theory (DFT), and experimentally determined breakthrough curves. This work provides a one‐step separation of the ternary gas mixture and can further serve as a blueprint for the design and construction of function‐oriented porous structures for such applications. [ABSTRACT FROM AUTHOR]

A rod-like porous Co/C composite was successfully fabricated by carbonizing a Co-based MOF-74 precursor. Due to significant synergy between the porous carbon framework (dielectric loss) and cobalt nanoparticles (magnetic loss) coupled with the multiple polarization loss (interfacial or dipole polarization loss) due to the porous nature of the structure, the Co/C composites showed extremely favorable microwave absorption performance. When the as-prepared cobalt-based MOF precursor was annealed at 700 °C (S700), the supreme EM wave reflection performance was −38.46 dB at 7.82 GHz with a coating thickness of 2.5 mm, whereas the broadest effective absorption bandwidth (3.3 GHz) was obtained with a coating thickness of 1.5 mm. Moreover, S600 samples exhibited an expansive absorption bandwidth range of 14.82 GHz (3.18–18 GHz) as the coating thickness was varied from 1.0 mm to 5.5 mm. The unique rod-like porous Co/C samples prepared in this study have significant potential for application in the field of the EM wave absorption. [ABSTRACT FROM AUTHOR]

Cobalt, ethylene purification, metal-organic frameworks (MOFs), one-step purification, ternary gas mixture Keywords: cobalt; ethylene purification; metal-organic frameworks (MOFs); one-step purification; ternary gas mixture EN cobalt ethylene purification metal-organic frameworks (MOFs) one-step purification ternary gas mixture 11636 11636 1 05/06/21 20210510 NES 210510 B Eine CpCo-Einheit b wurde in einen kubischen Käfig eingeführt, um eine sphärische Kraftfläche zu erzeugen, wodurch der kubische Käfig in zwei Teile geteilt wird. Rücktitelbild: One-step Ethylene Purification from an Acetylene/Ethylene/Ethane Ternary Mixture by Cyclopentadiene Cobalt-Functionalized Metal-Organic Frameworks (Angew. [Extracted from the article]

Keywords: cobalt; ethylene purification; metal-organic frameworks (MOFs); one-step purification; ternary gas mixture EN cobalt ethylene purification metal-organic frameworks (MOFs) one-step purification ternary gas mixture 11532 11532 1 05/06/21 20210510 NES 210510 B A CpCo group b was introduced in a cubic cage to generate a sphere-like force surface, thus dividing the cubic cage into two parts. Back Cover: One-step Ethylene Purification from an Acetylene/Ethylene/Ethane Ternary Mixture by Cyclopentadiene Cobalt-Functionalized Metal-Organic Frameworks (Angew. Based on the high selectivity of the CpCo group, high-purity ethylene is obtained from an acetylene/ethylene/ethane ternary mixture, as reported by Daofeng Sun et al. in their Research Article on page 11350. [Extracted from the article]