Column material for the capture of heavy metal and precious metal ions
US-2015144568-A1 · May 28, 2015 · US
Synthesis of layered metal sulfide ion-exchangers
US9227186B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9227186-B2 |
| Application number | US-201314044970-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 3, 2013 |
| Priority date | Oct 4, 2012 |
| Publication date | Jan 5, 2016 |
| Grant date | Jan 5, 2016 |
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Abstract
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Methods for the synthesis of compounds of the formula A 2x M x Sn 3-x S 6 , where x has a value in the range from 0.5 to 1; A is Li + , Na + , K + , or Rb + ; and M is Mg 2+ , Mn 2+ , Zn 2+ , or Fe 2+ , are provided. Also provided are methods of remediating fluid samples using the compounds.
First claim
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What is claimed is: 1. A method for the synthesis of a compound of the formula A 2x M x Sn 3-x S 6 , where x has a value in the range from 0.5 to 1; A is Li + , Na + , K + , Rb + or Cs + ; and M is Mg 2+ , Ca 2+ , Mn 2+ , Zn 2+ , or Fe 2+ , wherein the method is a solid state method comprising heating a reaction mixture of A 2 CO 3 , M, S and Sn to a temperature and for a time sufficient to produce the compound of the formula A 2x M x Sn 3-x S 6 , via a solid state reaction. 2. The method of claim 1 , wherein the reaction mixture consists of A 2 CO 3 , M, S and Sn. 3. The method of claim 1 , wherein heating the reaction mixture comprises heating the mixture to a temperature of no greater than about 1000° C. for a time of no greater than about 15 hours and further wherein the method provides a yield of the compound having the formula A 2x M x Sn 3-x S 6 of at least about 50%, based on total mass. 4. The method of claim 1 , further comprising ball milling the reaction mixture prior to heating. 5. The method of claim 1 , wherein A is K + and M is Mg 2+ . 6. A method comprising: exposing a fluid sample comprising at least one of Cr 6+ , Nd 3+ , As 3+ , As 5+ , Se 4+ , and Se 6+ ions to a chalcogenide compound having the formula A 2x M x Sn 3-x S 6 , where x has a value in the range from 0.5 to 1; A is Li + , Na + , K + , or Rb + ; and M is Mg 2+ , Ca 2+ , Mn 2+ , Zn 2+ , or Fe 2+ , whereby the chalcogenide compound absorbs the ions; and removing the absorbed ions from the fluid sample.
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Classifications
by ion-exchange (ion-exchange in general B01J) · CPC title
using inorganic sorbents · CPC title
- B01D15/362Primary
Cation-exchange · CPC title
- B01J39/085Primary
Operations & Transport · mapped topic
Inorganic material · CPC title
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- What does patent US9227186B2 cover?
- Methods for the synthesis of compounds of the formula A 2x M x Sn 3-x S 6 , where x has a value in the range from 0.5 to 1; A is Li + , Na + , K + , or Rb + ; and M is Mg 2+ , Mn 2+ , Zn 2+ , or Fe 2+ , are provided. Also provided are methods of remediating fluid samples using the compounds.
- Who is the assignee on this patent?
- Univ Northwestern
- What technology area does this patent fall under?
- Primary CPC classification B01D15/362. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Jan 05 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).