来源：ACS PublicationsAlkaline earth metal deposition is a key deactivation issue for Hg0 removal adsorbents in coal-fired flue gas, yet its influence on Co-based adsorbents remains insufficiently understood. In this work, Ca- and Mg-poisoned Ce–Bi–Co adsorbents were prepared by impregnation, solid-state diffusion, and dry mixing to simulate different deposition modes. The effects of metal species, poisoning route, loading level, and SO2 coexistence on Hg0 removal were examined in a fixed-bed reactor. Characterization results showed a uniform distribution of Co, Ce, and Bi and a mesoporous textur...
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2026
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来源：ACS PublicationsGiven the complex media of ocean water, facile determination of HCO3– concentration in situ remains difficult. Herein, we report the development of an indicator displacement probe to quantify HCO3– at levels relevant to ocean water. The probe has high selectivity for HCO3– over competing ions (Cl–, Na+, SO42–, Mg2+, Ca2+) for facile and accurate in situ measurements.
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2026
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来源：ACS PublicationsSynthesis of europium aluminates is usually conducted from the binary oxides (EuO/Eu2O3 + Al2O3) at high temperatures alongside a reductive gas for the stabilization of Eu2+. We are reporting on an alternative pathway starting from EuAl2 (cubic Laves phase, MgCu2 type, Fdm), which was oxidized under different conditions. By heating the intermetallic precursor to different temperatures, first amorphous and at higher temperatures highly crystalline products were observed. However, the question of the Eu valence state in the product will immediately arise. Depending on the reac...
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2026
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来源：ACS PublicationsRare-earth tungstates Ln2WO6 (Ln = Eu, Gd, Tb, Dy) and their high-entropy analogues were synthesized by mechanical activation of oxides. For the first time, an orthorhombic α-modification of Dy2WO6 (sp. gr. Pm21n) was obtained and characterized. It was demonstrated that the replacement of a single rare-earth element with a combination of five cations (La, Nd, Gd, Tm, Y) leads to the stabilization of the tetragonal phase (sp. gr. P21m) of the high-temperature polymorph, which does not stabilize as a ceramic at room temperature in single-component systems. The high-entropy tun...
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2026
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