Molded article

Patent metadata

Field	Value
Publication number	US-11123709-B2
Application number	US-201816480418-A
Country	US
Kind code	B2
Filing date	Jan 31, 2018
Priority date	Jan 31, 2017
Publication date	Sep 21, 2021
Grant date	Sep 21, 2021

Abstract

To provide a molded article which can have excellent strength, can also have high durability during repeated use, and can maintain high adsorption performance even when the content of a binder resin is reduced. A molded article containing cerium oxide particles and a binder resin, wherein cerium oxide particles which has an average particle diameter of 1 to 15 μm and in each of which a crystallite size is 40 to 200 Å are used.

First claim

The invention claimed is:

1. A molded article comprising cerium oxide particles and a binder resin that bonds the cerium oxide particles to one another, wherein an average particle diameter of the cerium oxide particles is 4 to 15 μm and a crystallite size in each of the cerium oxide particles is 40 to 200 Å and the cerium oxide particles are composed of crystalline bodies having an anisotropic shape selected from the group consisting of a plate-like shape, a scale-like shape, a rod-like shape and a needle-like shape, and wherein the binder resin comprises at least one polymer selected from the group consisting of polysulfone polymers, poly(vinylidene fluoride) polymers, poly(vinylidene chloride) polymers, acrylonitrile polymers, acrylate polymers, polyamide polymers, polyimide polymers and cellulose polymers.

2. The molded article according to claim 1 , wherein each of the cerium oxide particles is a sintered body in which a plurality of crystalline bodies each having shape anisotropy is bonded to each other three-dimensionally and randomly.

3. The molded article according to claim 2 , wherein the cerium oxide particles are contained in an amount of 90% by mass or more relative to the whole amount of the molded article.

4. The molded article according to claim 2 , wherein the molded article has a specific surface area of 100 to 200 m 2 /g.

5. The molded article according to claim 2 , wherein the molded article has an average pore diameter of 500 to 2000 nm.

6. The molded article according to claim 2 , wherein the molded article can be used as an adsorbent for iodate ions.

7. The molded article according to claim 1 , wherein the cerium oxide particles are contained in an amount of 90% by mass or more relative to the whole amount of the molded article.

8. The molded article according to claim 7 , wherein the molded article has a specific surface area of 100 to 200 m 2 /g.

9. The molded article according to claim 7 , wherein the molded article has an average pore diameter of 500 to 2000 nm.

10. The molded article according to claim 7 , wherein the molded article can be used as an adsorbent for iodate ions.

11. The molded article according to claim 1 , wherein the molded article has a specific surface area of 100 to 200 m 2 /g.

12. The molded article according to claim 11 , wherein the molded article has an average pore diameter of 500 to 2000 nm.

13. The molded article according to claim 11 , wherein the molded article can be used as an adsorbent for iodate ions.

14. The molded article according to claim 1 , wherein the molded article has an average pore diameter of 500 to 2000 nm.

15. The molded article according to claim 1 , wherein the molded article can be used as an adsorbent for iodate ions.

Assignees

• Mitsui Mining & Smelting Co

Inventors

• Sasakura Asuka
• Hayashi Katsuhiko
• Kurosaki Atsushi
• Sato Masanori
• Kinoshita Kazuya
• Asanuma Takahito
• Moriuchi Seiji

Classifications

• C02F1/281

  using inorganic sorbents · CPC title

• C02F2101/12

  Halogens or halogen-containing compounds · CPC title

• B01J20/28016

  Particle form · CPC title

• B01J20/2803

  Sorbents comprising a binder, e.g. for forming aggregated, agglomerated or granulated products · CPC title

• B01J20/321

  consisting of a polymer obtained by reactions involving only carbon to carbon unsaturated bonds · CPC title