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US 12,258,284 B2Granted
Activated carbon
AssigneesAd'all Co., Ltd., Unitika Ltd., Osaka Gas Chemicals Co., Ltd.
InventorsTomoyasu Nakano, Hirokazu Shimizu, Keiji Sakai
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Abstract
There is provided an activated carbon having a high total trihalomethane filtration capacity, even in water treatment by passing water at a high superficial velocity (SV). In the activated carbon of the present invention, a pore volume A (cc/g) of pores with a size of 1.0 nm or less, of pore volumes calculated by the QSDFT method, is 0.300 cc/g or more, and elemental vanadium and/or a vanadium compound is contained.
Claims17
An activated carbon having:
- a pore volume A (cc/g) of pores with a size of 1.0 nm or less wherein a pore volume calculated by the Quenched Solid Density Functional Theory (QSDFT) method is 0.300 cc/g or more,
- a pore volume B (cc/g) of pores with a size of 1.5 nm or less wherein a pore volume calculated by the QSDFT method is 0.38 cc/g or more,
- wherein the activated carbon has a specific surface area, as measured by BET method (single point using nitrogen as an adsorbate) of between 800 and 1,300 m2/g, and
- wherein elemental vanadium and/or a vanadium compound is contained in the activated carbon.
1 more element
An activated carbon having:
- a first pore volume (cc/g) of pores with a size of 1.0 nm or less wherein a pore volume calculated by the Quenched Solid Density Functional Theory (QSDFT) method is 0.300 cc/g or more,
- a second pore volume of pores with a size of 2.0 nm or more wherein a pore volume calculated by the Quenched Solid Density Functional Theory (QSDFT) method is 0.02 cc/g or less,
- wherein the activated carbon has a specific surface area, as measured by BET method (single point using nitrogen as an adsorbate) of between 800 and 1,300 m2/g, and
- wherein elemental vanadium and/or a vanadium compound is contained in the activated carbon.
1 more element
An activated carbon having:
- a first pore volume (cc/g) of pores with a size of 1.0 nm or less, with pore volumes calculated by Quenched Solid Density Functional Theory (QSDFT) method, is 0.300 cc/g or more;
- a second pore volume (cc/g) of pores with a size of 1.5 nm or more and 2.0 nm or less, with pore volumes calculated by the QSDFT method, is between 0.000 cc/g or more and 0.04 cc/g;
- a third pore volume (cc/g) of pores with a size of 2.0 nm or more, with pore volumes calculated by the QSDFT method, is 0.02 cc/g or less;
- and
- elemental vanadium and/or a vanadium compound.
2 more elements
Dependencies are inferred from the claim text.