Composite material comprising porous silicate particles and active metals

Patent metadata

Field	Value
Publication number	US-10843182-B2
Application number	US-201816190218-A
Country	US
Kind code	B2
Filing date	Nov 14, 2018
Priority date	Nov 17, 2017
Publication date	Nov 24, 2020
Grant date	Nov 24, 2020

Abstract

Provided is a composite material including a plurality of porous silicate particles having a glass phase structure, a first active metal adsorbed into the glass phase structure of the porous silicate particles, and a modified layer containing a second active metal formed on the surfaces of the porous silicate particles. The porous silicate particles have an average pore diameter of from 3 nm to 50 nm, and the first active metal includes at least one of sodium, potassium, calcium, and magnesium.

First claim

What is claimed is:

1. A composite material, comprising:
a plurality of porous silicate particles each having a glass phase structure;
a first active metal adsorbed into the glass phase structure of the porous silicate particles, wherein the first active metal comprises at least one of sodium, potassium, calcium, and magnesium; and
a modified layer containing a second active metal formed on surfaces of the porous silicate particles, wherein the plurality of porous silicate particles have an average pore diameter of from 3 nm to 50 nm.

2. The composite material of claim 1 , wherein the porous silicate particles are prepared from soda-lime glass or LCD panel glass as a raw material.

3. The composite material of claim 1 , wherein the porous silicate particles comprise silicon oxide, aluminum oxide, barium oxide, cesium oxide and boron oxide.

4. The composite material of claim 3 , wherein the silicon oxide and the aluminum oxide in components of the porous silicate particles are at a weight ratio of from 2 to 5.

5. The composite material of claim 1 , wherein the second active metal comprises at least one of ferrum, copper, group IA elements and group IIA elements.

6. The composite material of claim 1 , wherein the porous silicate particles have a specific surface area of from 50 m 2 /g to 400 m 2 /g.

7. The composite material of claim 1 , wherein the modified layer has layered crystal structures formed on the surfaces of the porous silicate particles.

8. The composite material of claim 7 , wherein the porous silicate particles have a specific surface area of from 50 m 2 /g to 100 m 2 /g.

9. The composite material of claim 8 , wherein the second active metal is selected from at least one of group IA elements and group IIA elements.

10. The composite material of claim 1 , wherein pore diameters of at least 60% pore volume of the porous silicate particles are in a range of from 3 nm to 50 nm.

11. The composite material of claim 1 , wherein the density of porous silicate particles is 0.5 g/cm 3 to 0.8 g/cm 3 .

12. The composite material of claim 1 , wherein the modified layer has a weight ratio of between 0.1 wt % to 2 wt % based on a total weight of the composite material.

Assignees

• Ind Tech Res Inst

Inventors

• Lee Nien-Tsu
• Hung Huan-Yi
• Lu Chien-Wei
• Tai Hsien-Hui

Classifications

• B01J39/14

  Base exchange silicates, e.g. zeolites · CPC title

• C02F1/281

  using inorganic sorbents · CPC title

• B01J39/02 Primary

  Processes using inorganic exchangers · CPC title

• C02F2101/20

  Heavy metals or heavy metal compounds · CPC title

• C02F1/288

  using composite sorbents, e.g. coated, impregnated, multi-layered · CPC title