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

Patent metadata

Field	Value
Publication number	US-11802059-B2
Application number	US-202016910899-A
Country	US
Kind code	B2
Filing date	Jun 24, 2020
Priority date	Feb 10, 2011
Publication date	Oct 31, 2023
Grant date	Oct 31, 2023

Abstract

A porous carbon material having a value of a specific surface area by a nitrogen BET method of 1×10 2 m 2 /g or more, a volume of fine pores by a BJH method of 0.3 cm 3 /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 1×10 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, and a particle size of 75 μm or more.

First claim

The invention claimed is:

1. A decontaminant comprising:
a 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 fine pores based on a BJH method of 0.3 cm 3 /g or more, and 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, and wherein the porous carbon material is made from a plant based material including siliconwherein the porous carbon material is made from a plant-derived material including one or more of a husk of a rice, a husk of a barley, a husk of a wheat, a husk of a rye, a husk of a Japanese millet, a husk of a foxtail millet, a straw of a rice, a straw of a barley, a straw of a wheat, a straw of a rye, a straw of a Japanese millet, a straw of a foxtail millet, a coffee bean, a tea leave, a green tea leave, a black tea leave, a sugar cane, a bagasse, a corn, a corn core, a fruit skin, a citrus fruit skin, a skin of a mandarin orange, a skin of a banana, a reed, a Wakame, a fern, a bryophytes, an algae and a seeweed.

2. A decontaminant comprising:
a 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, and 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, and wherein the porous carbon material is made from a plant-derived material including one or more of a husk of a rice, a husk of a barley, a husk of a wheat, a husk of a rye, a husk of a Japanese millet, a husk of a foxtail millet, a straw of a rice, a straw of a barley, a straw of a wheat, a straw of a rye, a straw of a Japanese millet, a straw of a foxtail millet, a coffee bean, a tea leave, a green tea leave, a black tea leave, a sugar cane, a bagasse, a corn, a corn core, a fruit skin, a citrus fruit skin, a skin of a mandarin orange, a skin of a banana, a reed, a Wakame, a fern, a bryophytes, an algae, and a seeweed.

3. A decontaminant comprising:
a 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, and having a particle size of 75 μm or more including 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, and wherein the porous carbon material is made from a plant based material including siliconwherein the porous carbon material is made from a plant-derived material including one or more of a husk of a rice, a husk of a barley, a husk of a wheat, a husk of a rye, a husk of a Japanese millet, a husk of a foxtail millet, a straw of a rice, a straw of a barley, a straw of a wheat, a straw of a rye, a straw of a Japanese millet, a straw of a foxtail millet, a coffee bean, a tea leave, a green tea leave, a black tea leave, a sugar cane, a bagasse, a corn, a corn core, a fruit skin, a citrus fruit skin, a skin of a mandarin orange, a skin of a banana, a reed, a Wakame, a fern, a bryophytes, an algae, and a seeweed.

4. A decontaminant comprising:
a 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 fine pores by mercury porosimetry of 1.0 cm 3 /g or more, and 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, and wherein the porous carbon material is made from a plant-derived material including one or more of a husk of a rice, a husk of a barley, a husk of a wheat, a husk of a rye, a husk of a Japanese millet, a husk of a foxtail millet, a straw of a rice, a straw of a barley, a straw of a wheat, a straw of a rye, a straw of a Japanese millet, a straw of a foxtail millet, a coffee bean, a tea leave, a green tea leave, a black tea leave, a sugar cane, a bagasse, a corn, a corn core, a fruit skin, a citrus fruit skin, a skin of a mandarin orange, a skin of a banana, a reed, a Wakame, a fern, a bryophytes, an algae, and a seeweed.

5. The decontaminant according to claim 1 , wherein a bulk density of the porous carbon material is 0.1 g/cm 3 or more and 0.8 g/cm 3 or less.

6. A carbon/polymer composite for removing a contaminant, comprising:
a 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 fine pores based on a BJH method of 0.3 cm 3 /g or more, and 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, and wherein the porous carbon material is made from a plant-derived material including one or more of a husk of a rice, a husk of a barley, a husk of a wheat, a husk of a rye, a husk of a Japanese millet, a husk of a foxtail millet, a straw of a rice, a straw of a barley, a straw of a wheat, a straw of a rye, a straw of a Japanese millet, a straw of a foxtail millet, a coffee bean, a tea leave, a green tea leave, a black tea leave, a sugar cane, a bagasse, a corn, a corn core, a fruit skin, a citrus fruit skin, a skin of a mandarin orange, a skin of a banana, a reed, a Wakame, a fern, a bryophytes, an algae, and a seeweed; and
a binder.

7. A carbon/polymer composite for removing a contaminant, comprising:
a 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, and 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, and wherein the porous carbon material is made from a plant-derived material including one or more of a husk of a rice, a husk of a barley, a husk of a wheat, a husk of a rye, a husk of a Japanese millet, a husk of a foxtail millet, a straw of a rice, a straw of a barley, a straw of a wheat, a straw of a rye, a straw of a Japanese millet, a straw of a foxtail millet, a coffee bean, a tea leave, a green tea leave, a black tea leave, a sugar cane, a bagasse, a corn, a corn core, a fruit skin, a citrus fruit skin, a skin of a mandarin orange, a skin of a banana, a reed, a Wakame, a fern, a bryophytes, an algae, and a seeweed; and
a binder.

Assignees

• Sony Corp

Inventors

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

Classifications

• B01D61/08

  Apparatus therefor · CPC title

• B01D2313/902

  Integrated cleaning device · CPC title

• C02F1/288 Primary

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

• B01D61/04

  Feed pretreatment · CPC title

• B01J20/20 Primary

  comprising free carbon; comprising carbon obtained by carbonising processes · CPC title