Three-dimensional gadolinium-based magnetic refrigeration complex based on single ligand and preparation method thereof

• Main Authors: LIANG FUPEI, WANG KAI, TENG QINGHU, WANG YIHAN
• Format: Patent
• Language: Chinese; English
• Published: 30.05.2023
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP

The invention discloses a three-dimensional gadolinium-based magnetic refrigeration complex based on a single ligand and a preparation method of the three-dimensional gadolinium-based magnetic refrigeration complex. The complex is prepared by taking 2-hydroxyisophthalic acid (H3ipO) and gadolinium nitrate as raw materials and H2O-DMF (Dimethyl Formamide) as a reaction solvent through a simple one-step solvothermal reaction. The chemical formula of the magnetic material is [Gd2 (ipO) (H2O)]. 3DMF. 4H2O, and the magnetic material presents an unprecedented three-dimensional frame structure formed by connecting [Dy9] annular units in a ring-to-ring manner, so that the magnetic material has relatively high magnetic density. The maximum magnetic entropy change value (-delta Sm) of the material reaches 36.61 J kg <-1 > K <-1 > and is far higher than the maximum magnetic entropy change value (14.6 J kg <-1 > K <-1 >) of a commercially applied traditional macroscopic magnetic refrigeration material Gd3Gd5O12, and the