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Synthesis and Characterization of Terbium-trimesic acid Luminescent Complex in Polyvinylpyrrolidone Matrix

Journal of Rare Earths 2006年第6期24卷 724-727页

作者：崔振峰任慧娟刘桂霞洪广言 Changchun Institute of Technology Changchun 130021China School of Chemistry and Environmental Engineering Changchun University of Science and TechnologyChangchun 130022China Key Laboratory of Rare Earth Chemistry and Physics Chinese Academy of Sciences Changchun 130022China

Tb（Ⅲ ）-trimesic acid （TMA） luminescent complexes were synthesized in the polyvinylpyrrolidone （PVP） matrix. The elemental analysis, inductively coupled plasma-atomic emission spectroscopy （ICP-AES） and fourier-transform infrared spectroscopy （FT-IR） indicated that its chemical constitution is PVP/Tb（MTA）· 4H2O. The XRD patterns showed that the complex is a new kind of crystal. The TEM image indicates that the complex is rod shaped. The rod diameter is about 200 nm, and the length ranges from hundred of nanometer to a few micrometers. In addition, the dispersity is better. TG-DTA curves indicate that the complex is thermally stable before 463℃. Photoluminescence analysis indicates that the complex emits Tb^3＋ characteristic luminescence under ultraviolet excitation.

关键词： terbium trimesic acid polyvinylpyrrolidone luminescence complex rare earths

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Biomass-based production of trimellitic and trimesic acids

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Green Energy & Environment 2024年第8期9卷 1267-1278页

作者： Lin Yuan Yancheng Hu Guangyi Li Fengan Han Aiqin Wang Yu Cong Tao Zhang Feng Wang Ning Li CAS Key Laboratory of Science and Technology on Applied Catalysis Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian116023China University of Chinese Academy of Sciences 19 A Yuquan RoadShijingshan DistrictBeijing100049China School of Chemical Engineering and Technology China University of Mining and TechnologyXuzhou221116JiangsuChina State Key Laboratory of Catalysis Dalian National Laboratory for Clean EnergyDalian Institute of Chemical PhysicsChinese Academy of Sciences457 Zhongshan RoadDalian116023China

The production of industrial chemicals with renewable biomass feedstock holds potential to aid the world in pursuing a carbon-neutral *** and trimesic acids are important commodity chemicals in industry that are prepared by the oxidation of petroleum-derived *** reduce the dependence on the limited oil source,we develop a potential sustainable alternative towards trimellitic and trimesic acids using biomass-based 2-methyl-2,4-pentandiol(MPD),acrylate and crotonaldehyde as starting *** process for trimellitic acid includes dehydration/D-A reaction of MPD and acrylate,flow aromatization over Pd/C catalyst,hydrolysis and catalytic aerobic oxidation(60%overall yield).The challenging regioselectivity issue of D-A reaction is tackled by a matched combination of temperature and deep eutectic solvent ChCl/HCO_(2)*** can also participate in the reaction,followed by Pd/C-catalyzed decarbonylation/dehydrogenation and oxidation to provide trimesic acid in 54%overall *** cycle assessment implies that compared to conventional fossil process,our biomass-based routes present a potential in reducing carbon emissions.

关键词： Biomass Trimellitic acid trimesic acid Deep eutectic solvent Dehydration/D-A reaction

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