Open-chain crown ether chelator and preparation method thereof

• Main Authors: JIN XIACHAO, YANG GANG, SHI XIAODAN
• Format: Patent
• Language: Chinese; English
• Published: 27.06.2017
• Subjects: ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAININGELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN,SULFUR, SELENIUM OR TELLURIUM; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; METALLURGY; ORGANIC CHEMISTRY; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE

The preparation method of the open-chain crown ether chelator effectively utilizes the peculiar controllable coordination of the open-chain crown ether and the selectivity for specific metal ions; and meanwhile, the acyloxy group is artfully added, thereby being beneficial to the interaction with the Lewis acid and Lewis base (LALB) of CO2 molecules, and further being beneficial to the dissolution of the solute. The prepared chelator can have high enough solubility in supercritical CO2, can selectively form stable high-solubility chelate compounds with metal ions, overcomes the defect that the traditional chelator can not satisfy the requirements, and has favorable separating effects on lanthanide ions, heavy metal ions, alkali earth metal ions and the like. 本发明的开链冠醚螯合剂制备方法有效地利用了开链冠醚特有的可控配位及对特定的金属离子的选择性，同时巧妙地将酸氧基团加入，有利于与CO分子的路易斯酸碱(LALB)相互作用，从而有利于溶质的溶解；所制备的螯合剂既可以在超临界CO中有足够高的溶解度，还要能够选择性的与金属离子形成稳定的、有较好溶解度的螯合物，克服了传统螯合剂不能同时满足上述要求的局限性，对镧系、重金属、碱土金属离子等具有良好的分离效果。