公开(公告)号：US10023937B2

公开(公告)日：2018-07-17

申请号：US14862866

申请日：2015-09-23

Applicant: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY

Inventor： Takeshi Ogata ,  Mikiya Tanaka

IPC: C22B59/00 ,  C22B3/24 ,  B01J20/26 ,  B01J20/34 ,  B01J20/30 ,  B01J20/10 ,  C02F1/28 ,  B01J20/32 ,  B01J20/22 ,  C08F110/02 ,  C08F110/06 ,  C08G73/02 ,  C22B7/00 ,  C08K3/36 ,  C02F101/10

Abstract: An adsorbent for rare earth element and a method for recovering a rare earth element, in which a rare earth element contained in an aqueous solution can be simply and inexpensively adsorbed and recovered, and a rare earth element present in an aqueous solution in combination with a base metal can be selectively adsorbed and recovered. The adsorbent includes a base material and diglycolamic acid introduced into the base material. The method for recovering a rare earth element includes steps of: bringing an aqueous solution containing a rare earth element into contact with the adsorbent for rare earth element to allow the rare earth element to be adsorbed on the adsorbent for rare earth element; and desorbing the rare earth element adsorbed on the adsorbent for rare earth element with an acid of 1 N or less.

公开(公告)号：US11326228B2

公开(公告)日：2022-05-10

申请号：US16754413

申请日：2018-10-22

Applicant: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY ,  SANTOKU CORPORATION

Inventor： Takeshi Ogata ,  Hirokazu Narita ,  Mikiya Tanaka ,  Tadatoshi Murota

IPC: C22B3/24 ,  C22B59/00 ,  B01J20/10 ,  B01J20/02 ,  B01J20/26 ,  B01D15/02 ,  B01J20/32 ,  C22B3/08 ,  C22B3/10

Abstract: Provided is a method for easily and inexpensively separating a rare earth element contained in an aqueous solution.

公开(公告)号：US20160010178A1

公开(公告)日：2016-01-14

申请号：US14862866

申请日：2015-09-23

Applicant: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY

Inventor： Takeshi Ogata ,  Mikiya Tanaka

IPC: C22B59/00 ,  B01J20/22 ,  C08F110/02 ,  C08G73/02 ,  C08F110/06 ,  C22B7/00 ,  B01J20/26

CPC classification number: C22B59/00 ,  B01J20/103 ,  B01J20/22 ,  B01J20/261 ,  B01J20/265 ,  B01J20/3071 ,  B01J20/3204 ,  B01J20/321 ,  B01J20/3212 ,  B01J20/3251 ,  B01J20/3259 ,  B01J20/328 ,  B01J20/3425 ,  B01J20/3475 ,  C02F1/285 ,  C02F1/286 ,  C02F1/288 ,  C02F2101/10 ,  C08F110/02 ,  C08F110/06 ,  C08G73/02 ,  C08G73/0206 ,  C08K3/36 ,  C22B3/24 ,  C22B7/006 ,  Y02P10/234 ,  C08L79/02

Abstract: An adsorbent for rare earth element and a method for recovering a rare earth element, in which a rare earth element contained in an aqueous solution can be simply and inexpensively adsorbed and recovered, and a rare earth element present in an aqueous solution in combination with a base metal can be selectively adsorbed and recovered. The adsorbent includes a base material and diglycolamic acid introduced into the base material. The method for recovering a rare earth element includes steps of: bringing an aqueous solution containing a rare earth element into contact with the adsorbent for rare earth element to allow the rare earth element to be adsorbed on the adsorbent for rare earth element; and desorbing the rare earth element adsorbed on the adsorbent for rare earth element with an acid of 1 N or less.

Abstract translation: 稀土元素用吸附剂和稀土元素的回收方法，其中含水溶液中的稀土元素可以简单且廉价地吸附和回收，并且存在于水溶液中的稀土元素与 碱金属可以选择性吸附和回收。 吸附剂包括引入基材的基础材料和二甘醇酸。 回收稀土元素的方法包括以下步骤：使含有稀土元素的水溶液与稀土元素用吸附剂接触，使稀土元素吸附在稀土元素吸附剂上; 并用1 N以下的酸吸附在稀土元素吸附剂上的稀土元素。