Sorption agent, method of making a sorption agent and barrier system

Patent metadata

Field	Value
Publication number	US-12330136-B2
Application number	US-202117546190-A
Country	US
Kind code	B2
Filing date	Dec 9, 2021
Priority date	Dec 8, 2017
Publication date	Jun 17, 2025
Grant date	Jun 17, 2025

Abstract

An anionic sorption agent, method for forming the anionic sorption agent and a barrier system are disclosed. The anionic sorption agent including a modified pseudo or glycol-boehmite base comprising a structure having cationic metal ion sites. The method for forming the anionic sorption agent includes providing a pseudo or glycol-boehmite base and contacting the pseudo or glycol-boehmite base a modifying composition comprising a metallic ion to form the modified pseudo or glycol-boehmite base comprising a structure having cationic metal ion sites. The barrier system includes the anionic sorption agent comprising a first barrier component comprising a modified pseudo or glycol-boehmite base comprising a structure having cationic metal ion sites and a second barrier component comprising a cationic sorption agent.

First claim

What is claimed is:

1. A method of making an anionic sorption agent comprising:
providing a pseudo-boehmite base or glycol-boehmite base; and
contacting the pseudo-boehmite base or glycol-boehmite base with a modifying composition comprising a metallic ion to form a modified pseudo-boehmite base or glycol-boehmite base comprising an anionic sorption agent comprising having cationic metal ion sites;
wherein the contacting includes a surface adsorption, ion exchange, or intercalation reaction.

2. The method of claim 1 , further comprising heating the pseudo-boehmite base or glycol-boehmite base to remove water from the pseudo-boehmite base or glycol-boehmite base.

3. The method of claim 1 , wherein the modifying composition is a solution comprising metal ions selected from the group consisting of Mn, Fe, Co, Ni, Cu, Zn, and combinations thereof.

4. The method of claim 3 , wherein the cationic metal ion site includes Ni.

5. The method of claim 3 , wherein the modifying composition is NiCl 2 .

6. The method of claim 1 , wherein the providing and contacting are incorporated in a single synthesis step.

7. The method of claim 6 , wherein the cationic metal ion sites have been incorporated during the single synthesis step.

8. The method of claim 7 , wherein the single synthesis step includes forming a glycol-boehmite base in a glycol solvent.

9. The method of claim 8 , wherein the synthesis step includes providing modifying composition containing dopant ions selected from the group consisting of Y, Ga, Fe, Si, P, S, Ti, Zr, Hf, and combinations thereof.

10. The method of claim 1 , wherein the modified pseudo or glycol-boehmite base includes a surface area greater than about 160 m 2 /g.

Assignees

• Nat Tech & Eng Solutions Sandia Llc

Inventors

• Matteo Edward N
• Payne Clay
• Sanchez Amanda
• Bell Nelson S
• Wang Yifeng
• Kruichak Jessica N
• Mills Melissa Marie

Classifications

• B01J20/28061

  being in the range 100-500 m2/g · CPC title

• B01J20/28066

  being more than 1000 m2/g · CPC title

• B01J20/28064

  being in the range 500-1000 m2/g · CPC title

• B01J41/09

  Organic material · CPC title

• B01J20/08 Primary

  comprising aluminium oxide or hydroxide; comprising bauxite · CPC title