公开(公告)号：US20250121353A1

公开(公告)日：2025-04-17

申请号：US18683802

申请日：2022-08-10

Applicant: AD'ALL CO., LTD. ,  UNITIKA LTD. ,  OSAKA GAS CHEMICALS CO., LTD.

Inventor： Kazuomi SUGAHARA ,  Tomoyasu NAKANO ,  Hirokazu SHIMIZU ,  Keiji SAKAI ,  Takuya ASADA

IPC: B01J20/20 ,  B01J20/28 ,  B01J20/30 ,  C02F1/28 ,  C02F101/36

Abstract: It is an object of the present invention to provide an activated carbon having a high mechanical strength and an excellent filtration capacity for trihalomethanes. An activate carbon in which a pore volume A of pores with a size of 1.0 nm or less, of pore volumes calculated by the QSDFT method from a nitrogen desorption isotherm, is 0.23 cc/g or more and 0.25 cc/g or less, a pore volume B of pores with a size of 1.5 nm or more and 2.5 nm or less, of pore volumes calculated by the QSDFT method from the nitrogen desorption isotherm, is more than 0.12 cc/g and 0.19 cc/g or less, and the activated carbon has a specific surface area of 1000 m2/g or more and 1200 m2/g or less.

公开(公告)号：US11873235B2

公开(公告)日：2024-01-16

申请号：US17253154

申请日：2019-06-18

Applicant: AD'ALL CO., LTD. ,  UNITIKA LTD. ,  OSAKA GAS CHEMICALS CO., LTD.

Inventor： Tomoyasu Nakano ,  Hirokazu Shimizu ,  Akinori Kawachi ,  Keiji Sakai

IPC: C02F1/28 ,  B01J20/20 ,  B01J20/30 ,  C01B32/33 ,  C01B32/336 ,  C02F101/36

CPC classification number: C02F1/283 ,  B01J20/20 ,  B01J20/30 ,  C01B32/336 ,  C02F2101/36 ,  C02F2303/185

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 of pores with a size of 1.0 nm or less, of pore volumes calculated by the QSDFT method, is 0.3 cc/g or more, and a pore volume B of pores with a size of 3.0 nm or more and 3.5 nm or less, of pore volumes calculated by the QSDFT method, is 0.009 cc/g or more.

公开(公告)号：US20210261442A1

公开(公告)日：2021-08-26

申请号：US17253163

申请日：2019-06-18

Applicant: AD'ALL CO., LTD. ,  UNITIKA LTD. ,  OSAKA GAS CHEMICALS CO., LTD.

Inventor： Tomoyasu NAKANO ,  Hirokazu SHIMIZU ,  Keiji SAKAI

IPC: C02F1/28 ,  B01J20/20 ,  B01J20/30 ,  C01B32/336

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.

公开(公告)号：US12258284B2

公开(公告)日：2025-03-25

申请号：US17253163

申请日：2019-06-18

Applicant: AD'ALL CO., LTD. ,  UNITIKA LTD. ,  OSAKA GAS CHEMICALS CO., LTD.

Inventor： Tomoyasu Nakano ,  Hirokazu Shimizu ,  Keiji Sakai

IPC: B01J20/20 ,  B01J20/30 ,  C01B32/336 ,  C02F1/28 ,  C02F101/36

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.

公开(公告)号：US20210261441A1

公开(公告)日：2021-08-26

申请号：US17253154

申请日：2019-06-18

Applicant: AD'ALL CO., LTD. ,  UNITIKA LTD. ,  OSAKA GAS CHEMICALS CO., LTD.

Inventor： Tomoyasu NAKANO ,  Hirokazu SHIMIZU ,  Akinori KAWACHI ,  Keiji SAKAI

IPC: C02F1/28 ,  B01J20/20 ,  B01J20/30 ,  C01B32/336

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 of pores with a size of 1.0 nm or less, of pore volumes calculated by the QSDFT method, is 0.3 cc/g or more, and a pore volume B of pores with a size of 3.0 nm or more and 3.5 nm or less, of pore volumes calculated by the QSDFT method, is 0.009 cc/g or more.