来源：ACS PublicationsRare-earth oxide-supported Ru metal catalysts are promising for NH3 synthesis owing to a strong metal–support interaction. Modifying rare-earth oxides with a second metal offers an effective approach to tuning support properties, while systematic support engineering to enhance NH3 synthesis performance remains scarce. In this work, a series of Ru/Ce1–aLaaOx catalysts with varying Ce-to-La molar ratios were synthesized and evaluated for NH3 synthesis. The NH3 synthesis rate of Ru/Ce1–aLaaOx exhibits a volcano relationship with an increase in the La content. The optimal Ru/Ce0...
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2026
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来源：ACS PublicationsLanthanum is widely used as a structural and textural promoter in zeolite-containing FCC catalysts. This work investigates the structural, textural, and sorption properties of the solid residue formed after acid leaching of lanthanum from spent petroleum hydrocarbon cracking catalyst. It is shown that nitric and sulfuric acids treatment aimed at extracting the rare earth element leads to significant changes in the chemical composition and surface characteristics of the residual material, while the crystalline Y-type zeolite framework is preserved. The aluminum content in the...
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2026
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来源：ACS PublicationsThis study reports the synthesis of two rare-earth imidonitridophosphates and a series of 3d transition metal imidonitridophosphates (MIIIH3P6N12 with M = V, Cr, Eu, Lu, and MIIH4P6N12 with M = Mn, Fe, Co, Ni) by high-pressure metathesis. The crystal structures were elucidated by a combination of single-crystal and powder X-ray diffraction, elemental analysis, and vibrational spectroscopy. All compounds crystallize in the orthorhombic crystal system (transition metal imidonitridophosphates: Cmce, EuH3P6N12: Pna21, LuH3P6N12: Pbam) and feature a layered anionic network compos...
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2026
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来源：ACS PublicationsEnergy consumption is one of the most important concerning issues of environmental problems especially the global warming phenomenon, with energy usage being the main cause. To reduce the energy used for cooling systems, development of material for smart buildings for near-infrared (NIR) protection is a challenge of material society. Metal oxides including tin oxide (SnO2) with an antimony (Sb) dopant are a candidate owing to their NIR shielding property. However, the upgrading of NIR absorption performance with rare-earth doping due to the specific property of rare-earth el...
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2026
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