Zirconium-substituted arsenotungstic acid macrocyclic material, preparation method and application of zirconium-substituted arsenotungstic acid macrocyclic material in iodine adsorption

• Main Authors: MA PENGTAO, NIU JINGYANG, SUN LIN, YANG DONGSHENG, ZHI YUQING
• Format: Patent
• Language: Chinese; English
• Published: 22.08.2023
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING

The invention relates to two internal ligand regulated Zr-substituted macrocyclic arsenotungstate. The chemical formula of the internal ligand regulated Zr-substituted macrocyclic arsenotungstate is [N (CH3) 4] 36H12 [NaZr3 (mu3-O) (lacc) (H2O) 4 (B-alpha-AsW9O33) 2] 6. 196H2O (1) (lacc = lactic acid) and [N (CH3) 4] 36H18 [NaZr3 (mu3-O) (C2O4) (H2O) 4 (B-alpha-AsW9O33) 2] 6. 203H2O (2). The difference between the compound 1 and the compound 2 mainly lies in the difference of ligands, the former is lactic acid, and the latter is oxalic acid for coordination. Besides, the compound 1 and the compound 2 have similar structures, are respectively composed of six alkali metal bonded organic-inorganic hybrid arsenotungstate, and both present a remarkable ring shape and have a cavity with the size of about 11. An iodine adsorption experiment result shows that the compound 1 has relatively good iodine adsorption performance, after 48 hours, the adsorption of the compound 1 to iodine is balanced, the removal efficiency