Method of adsorbing iodine or bromine

Patent metadata

Field	Value
Publication number	US-10005063-B2
Application number	US-201314646952-A
Country	US
Kind code	B2
Filing date	Nov 25, 2013
Priority date	Nov 23, 2012
Publication date	Jun 26, 2018
Grant date	Jun 26, 2018

Abstract

The present invention relates to an iodine (I 2 ) or bromine (Br 2 ) adsorbent including a zeolite having a Si/Al ratio of 15 or greater; an I 2 or Br 2 carrier including the I 2 or Br 2 adsorbent; a column filled with the I 2 or Br 2 adsorbent; a article composed of the I 2 or Br 2 adsorbent or having the I 2 or Br 2 adsorbent attached thereto; a method for adsorbing or removing I 2 or Br 2 using the I 2 or Br 2 adsorbent; an iodine- or bromine-containing zeolite composite including a porous zeolite and iodine (I 2 ) or bromine (Br 2 ) confined in the pores of the zeolite; a semiconductor material including the iodine- or bromine-containing zeolite composite; and a method for preparing an iodine- or bromine-containing product using the iodine- or bromine-containing zeolite composite.

First claim

What is claimed is:

1. A method of adsorbing I 2 or Br 2 and converting neither the adsorbed I 2 to I − nor the adsorbed Br 2 to Br − , comprising
adsorbing I 2 or Br 2 on a I 2 or Br 2 adsorbent containing a zeolite having a Si/Al ratio of 15 or greater and a Sanderson partial negative charge on oxygen (−δº) of 0.2 or lower, wherein the zeolite is selected from the group consisting of SL-1F, Si-BEA and SL-1.

2. The method of claim 1 , wherein the adsorbed iodine (I 2 ) comprises radioactive iodine.

3. A method of removing I 2 or Br 2 , comprising:
adsorbing I 2 or Br 2 without converting the adsorbed I 2 to I − or the adsorbed Br 2 to Br − , on a I 2 or Br 2 adsorbent containing a zeolite having a Si/Al ratio of 15 or greater and a Sanderson partial negative charge on oxygen (−δº) of 0.2 or lower, wherein the zeolite is selected from the group consisting of SL-1F, Si-BEA and SL-1;
desorbing the adsorbed I 2 or Br 2 from the zeolite by contacting the I 2 or Br 2 adsorbent with an organic solvent dissolving I 2 or Br 2 , by heating the I 2 or Br 2 adsorbent, or by blowing the I 2 or Br 2 adsorbent in heated air or heated nitrogen; and
forming a precipitate by reacting the desorbed I 2 or Br 2 with AgNO 3 .

4. The method for removing I 2 or Br 2 according to claim 3 , wherein the organic solvent is ethanol, diethyl ether, AcOH, benzene, CHCl 3 , carbon disulfide, or a mixture thereof.

Assignees

• Univ Sogang Res Foundation

Inventors

• Yoon Kyung Byung
• Pham Cao Than Tung
• Park Yong Su

Classifications

• C01B7/096

  Bromine · CPC title

• G21F9/04

  Treating liquids · CPC title

• H01B1/04

  mainly consisting of carbon-silicon compounds, carbon or silicon · CPC title

• C02F2101/12

  Halogens or halogen-containing compounds · CPC title

• C01B7/14

  Iodine · CPC title