Decontaminant, carbon/polymer composite, decontamination sheet member and filter medium

Patent metadata

Field	Value
Publication number	US-11697603-B2
Application number	US-201213982810-A
Country	US
Kind code	B2
Filing date	Feb 9, 2012
Priority date	Feb 10, 2011
Publication date	Jul 11, 2023
Grant date	Jul 11, 2023

Abstract

A filter medium of the present invention includes a porous carbon material having a value of a specific surface area by a nitrogen BET method of 1×102 m2/g or more, a volume of fine pores by a BJH method of 0.3 cm3/g or more, and a particle size of 75 μm or more, alternatively, a porous carbon material having a value of a specific surface area by a nitrogen BET method of 1×102 m2/g or more, a total of volumes of fine pores having a diameter of from 1×10−9 m to 5×10−7 m, obtained by a non-localized density functional theory method, of 1.0 cm3/g or more, and a particle size of 75 μm or more.

First claim

The invention claimed is:

1. A decontaminant for an aqueous solution, the decontaminant comprising:
a porous carbon material comprising meso fine pores having a pore diameter from 2 nm to 50 nm, micro fine pores having a pore diameter smaller than 2 nm, and macro fine pores having a pore diameter exceeding 50 nm, the porous carbon material having a value of a specific surface area based on a nitrogen BET method of 1×10 2 m 2 /g or more, a volume of meso and macro fine pores based on a BJH method of 0.3 cm 3 /g or more, and a bulk density of 0.1 g/cm 3 or more to 0.8 g/cm 3 or less, a volume of macro, meso, and micro fine pores by mercury porosimetry of 1.5 cm 3 /g or more, and having a plant containing at least one component selected from the group consisting of sodium, magnesium, potassium and calcium as a raw material, and having a particle size distribution consisting of a first particle size range of 0.50 mm to 0.85 mm; and a second particle size range of 0.85 to 1.7 mm, wherein the first particle size range is at a greater particle size distribution percentage as compared to the second particle size range.

2. A decontaminant for an aqueous solution, the decontaminant comprising:
a porous carbon material comprising meso fine pores having a pore diameter from 2 nm to 50 nm, micro fine pores having a pore diameter smaller than 2 nm, and macro fine pores having a pore diameter exceeding 50 nm, the porous carbon material having a value of a specific surface area based on a nitrogen BET method of 1×10 2 m 2 /g or more, a total of volumes of fine pores having a diameter of from 1×10 −9 m to 5×10 −7 m, obtained by a non-localized density functional theory method, of 1.0 cm 3 /g or more, a volume of macro, meso, and micro fine pores by mercury porosimetry of 1.5 cm 3 /g or more, and a bulk density of 0.1 g/cm 3 or more to 0.8 g/cm 3 or less, and having a plant containing at least one component selected from the group consisting of sodium, magnesium, potassium and calcium as a raw material, and having a particle size distribution consisting of a first particle size range of 0.50 mm to 0.85 mm; and a second particle size range of 0.85 to 1.7 mm, wherein the first particle size range is at a greater particle size distribution percentage as compared to the second particle size range.

3. A decontaminant for an aqueous solution, the decontaminant comprising:
a porous carbon material comprising meso fine pores having a pore diameter from 2 nm to 50 nm, micro fine pores having a pore diameter smaller than 2 nm, and macro fine pores having a pore diameter exceeding 50 nm, the porous carbon material having a value of a specific surface area based on a nitrogen BET method of 1×10 2 m 2 /g or more, having at least one peak in the range of 3 nm to 20 nm, in a pore diameter distribution obtained by a non-localized density functional theory method, in which a ratio of a total of volumes of fine pores that have pore diameters in the range of 3 nm to 20 nm, with respect to a sum total of volumes of all fine pores, is 0.2 or more, a volume of macro, meso, and micro fine pores by mercury porosimetry of 1.5 cm 3 /g or more, and a bulk density of 0.1 g/cm 3 or more to 0.8 g/cm 3 or less, and having a plant containing at least one component selected from the group consisting of sodium, magnesium, potassium and calcium as a raw material, and having a particle size distribution consisting of a first particle size range of 0.50 mm to 0.85 mm; and a second particle size range of 0.85 to 1.7 mm, wherein the first particle size range is at a greater particle size distribution percentage as compared to the second particle size range.

4. A decontaminant for an aqueous solution, the decontaminant comprising:
a porous carbon material comprising meso fine pores having a pore diameter from 2 nm to 50 nm, micro fine pores having a pore diameter smaller than 2 nm, and macro fine pores having a pore diameter exceeding 50 nm, the porous carbon material having a value of a specific surface area based on a nitrogen BET method of 1×10 2 m 2 /g or more, a volume of macro, meso, and micro fine pores by mercury porosimetry of 1.5 cm 3 /g, and a bulk density of 0.1 g/cm 3 or more to 0.8 g/cm 3 or less, and having a particle size distribution consisting of a first particle size range of 0.50 mm to 0.85 mm; and a second particle size range of 0.85 to 1.7 mm, wherein the first particle size range is at a greater particle size distribution percentage as compared to the second particle size range.

5. A carbon/polymer composite for removing a contaminant in an aqueous solution, the carbon/polymer composite comprising the porous carbon material of claim 1 and a binder.

6. A carbon/polymer composite for removing a contaminant in an aqueous solution, the carbon/polymer composite comprising the porous carbon material of claim 2 and a binder.

7. A carbon/polymer composite for removing a contaminant in an aqueous solution, the carbon/polymer composite comprising the porous carbon material of claim 3 and a binder.

8. A carbon/polymer composite for removing a contaminant in an aqueous solution, the carbon/polymer composite comprising the porous carbon material of claim 4 and a binder.

9. A decontamination sheet member for removing a contaminant in an aqueous solution, the decontamination sheet member comprising the porous carbon material of claim 1 and a support member.

10. A decontamination sheet member for removing a contaminant in an aqueous solution, the decontamination sheet member comprising the porous carbon material of claim 2 and a support member.

11. A decontamination sheet member for removing a contaminant in an aqueous solution, the decontamination sheet member comprising the porous carbon material of claim 3 and a support member.

12. A decontamination sheet member for removing a contaminant in an aqueous solution, the decontamination sheet member comprising the porous carbon material of claim 4 and a support member.

13. A filter medium for removing a contaminant in an aqueous solution, the filter medium comprising the porous carbon material of claim 1 .

14. A filter medium for removing a contaminant in an aqueous solution, the filter medium comprising the porous carbon material of claim 2 .

15. A filter medium for removing a contaminant in an aqueous solution, the filter medium comprising the porous carbon material of claim 3 .

16. A filter medium for removing a contaminant in an aqueous solution, the filter medium comprising the porous carbon material of claim 4 .

17. A filter medium for removing a contaminant in an aqueous solution, the filter medium comprising: a porous carbon material comprising meso fine pores having a pore diameter from 2 nm to 50 nm, micro fine pores having a pore diameter smaller than 2 nm, and macro fine pores having a pore diameter exceeding 50 nm, the porous carbon material having a value of a specific surface area based on a nitrogen BET method of 1×10 2 m 2 /g or more, a volume of meso and macro fine pores based on a BJH method of 0.1 cm 3 /g or more, a volume of macro, meso, and micro fine pores by mercury porosimetry of 1.5 cm 3 /g or more, and a bulk density of 0.1 g/cm′ or more to 0.8 g/cm 3 or less, and having a plant containing at least one component selected from the group consisting of sodium, magnesium, potassium and calcium as a raw material, and having a particle size distribution consisting of a first particle size range of 0.50 mm to 0.85 mm; and a second particle size range of 0.85 to 1.7 mm, wherein the first particle size range is at a greater particle size distribution percent

Assignees

• Yamanoi Shun
• Iida Hironori
• Minatoya Machiko
• Tabata Seiichiro
• Yamada Shinichiro
• Sony Corp

Inventors

• Yamanoi Shun
• Iida Hironori
• Minatoya Machiko
• Tabata Seiichiro
• Yamada Shinichiro

Classifications

• B01D2311/2649

  Filtration · CPC title

• B01J20/28069

  Pore volume, e.g. total pore volume, mesopore volume, micropore volume · CPC title

• C02F2201/006

  Cartridges · CPC title

• C02F2307/06

  Mounted on or being part of a faucet, shower handle or showerhead · CPC title

• B01J20/28083

  being in the range 2-50 nm, i.e. mesopores · CPC title