发明名称 |
Method for producing a complex-forming sorbent for selective extraction of indium |
摘要 |
The invention relates to the field of ion exchange with the formation of a complex or chelate by using complex-forming polymers and can be used in nonferrous metallurgy and hydrometallurgy of indium for extraction of indium from wastewaters, as well as in the chemical industry and for producing special-purity substances.;A method for producing a complex-forming sorbent for selective extraction of indium is proposed, wherein the method comprises the introduction of gem-diphosphonic functional groups, and wherein, in order to increase the selectivity and sorption capacity for indium, the gem-diphosphonic functional groups are introduced by the treatment of a spherically granulated cross-linked macroporous acrylonitrile-divinylbenzene copolymer with phosphorous acid at temperature of from 140 to 160° C. for from 13 to 35 hours. In the presence of a diluent (chlorobenzene), the method is carried out at a temperature of between 100 and 130° C.;The technical result is to introduce gem-diphosphonic functional groups by the treatment of spherically granulated cross-linked macroporous acrylonitrile-divinylbenzene copolymer with phosphorous acid, which simplifies the method for production and increases capacity and selectivity of the synthesized sorbent for indium, thus improving a complex of the application properties of the material. |
申请公布号 |
US9375702(B2) |
申请公布日期 |
2016.06.28 |
申请号 |
US201314418036 |
申请日期 |
2013.03.13 |
申请人 |
Joint-Stock Company “AXION-Rare-Earth and Noble Metals” |
发明人 |
Tret'Jakov Vitaly Aleksandrovich;Kondruckiy Dmitriy Alekseevich;Gadzhiev Gadzhi Rabadanovich;Bobrov Aleksandr Fadeevich;Nesterov Alexei Gennadievich |
分类号 |
C08F8/40;B01J20/26;B01J45/00;B01J20/22;B01J20/30;C08F212/36;C08F220/44;C02F1/42;C02F101/20;C02F103/16 |
主分类号 |
C08F8/40 |
代理机构 |
Banner & Witcoff, Ltd. |
代理人 |
Banner & Witcoff, Ltd. |
主权项 |
1. A method for producing a gem-diphosphonic functional groups-containing, complex-forming sorbent for selective extraction of indium, the method comprising
treating a spherically granulated cross-linked macroporous acrylonitrile-divinylbenzene copolymer with dried phosphorous acid at an elevated temperature with following separating and washing product granules with water and ethanol sequentially. |
地址 |
Perm RU |