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Synthesis of acrylic acid and acrylic esters via oxidation and oxidative alkoxylation of acrolein under mild conditions with selenium-modified microgel catalysts
Reaction Chemistry & Engineering ( IF 3.9 ) Pub Date : 2022-07-04 , DOI: 10.1039/d2re00252c
Tetiana Kharandiuk , Kok Hui Tan , Iryna Kubitska , Miriam Aischa Al Enezy-Ulbrich , Volodymyr Ivasiv , Roman Nebesnyi , Igor Potemkin , Andrij Pich

Systematic studies of acrolein oxidation and oxidative alkoxylation catalyzed by Se-modified microgel catalysts under mild reaction conditions were conducted. Se-modified microgels proved to be highly active colloidal catalysts and exhibited high performance for the oxidation of acrolein to acrylic acid and oxidative alkoxylation to the corresponding methyl/ethyl/butyl acrylates using hydrogen peroxide as a green oxidant. Methyl acrylate or acrylic acid can be synthesized in high yield (89–91%) and with high selectivity (97–99%) simply by regulating the solvent type and the concentration of selenium moieties in the microgel structure. Se-microgels exhibit exceptional catalytic activity compared with other Se-containing molecules of organic and inorganic nature. Due to the unique properties of the microgels that combine advantages from homogeneous and heterogeneous catalytic systems in terms of activity and selectivity as well as re-use possibilities, Se-microgel catalysts can be easily separated and reused in several catalytic cycles and remain highly active.

中文翻译:

硒改性微凝胶催化剂在温和条件下通过丙烯醛的氧化和氧化烷氧基化合成丙烯酸和丙烯酸酯

对Se修饰的微凝胶催化剂在温和反应条件下催化的丙烯醛氧化和氧化烷氧基化进行了系统研究。硒改性的微凝胶被证明是高活性的胶体催化剂,并且在使用过氧化氢作为绿色氧化剂将丙烯醛氧化成丙烯酸和氧化烷氧基化成相应的丙烯酸甲酯/乙酯/丁酯方面表现出高性能。只需调节溶剂类型和微凝胶结构中硒部分的浓度,即可以高产率 (89-91%) 和高选择性 (97-99%) 合成丙烯酸甲酯或丙烯酸。与其他有机和无机性质的含硒分子相比,硒微凝胶表现出卓越的催化活性。
更新日期:2022-07-04
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