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1.发明授权公开(公告)号：US11964260B2
公开(公告)日：2024-04-23
申请号：US17060641
申请日：2020-10-01
发明人： Hideo Hosono , Masaaki Kitano , Toshiharu Yokoyama , Jiang Li , Shigeki Kawamura , Kazuhisa Kishida
IPC分类号： B01J23/58 , B01J21/04 , B01J23/46 , B01J35/10 , B01J37/02 , B01J37/08 , B01J37/18 , C01C1/04
CPC分类号： B01J23/58 , B01J21/04 , B01J23/462 , B01J35/10 , B01J35/1009 , B01J37/0201 , B01J37/08 , B01J37/18 , C01C1/04 , C01C1/0411 , Y02P20/52
摘要： Provided is a method for manufacturing a catalyst with which it is possible to obtain a supported metal ammonia synthesis catalyst, in which there are restrictions in terms of producing method and producing facility, and particularly large restrictions for industrial-scale producing, in a more simple manner and so that the obtained catalyst has a high activity. This method for manufacturing an ammonia synthesis catalyst includes: a first step for preparing 12CaO·7Al2O3 having a specific surface area of 5 m2/g or above; a second step for supporting a ruthenium compound on the 12CaO·7Al2O3; and a third step for performing a reduction process on the 12CaO·7Al2O3 supporting the ruthenium compound, obtained in the second step. This invention is characterized in that the reduction process is performed until the average particle diameter of the ruthenium after the reduction process has increased by at least 15% in relation to the average particle diameter of the ruthenium before the reduction process.
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2.发明申请公开(公告)号：US20190210008A1
公开(公告)日：2019-07-11
申请号：US16323745
申请日：2017-08-08
发明人： Hideo Hosono , Masaaki Kitano , Toshiharu Yokoyama , Jiang Li , Shigeki Kawamura , Kazuhisa Kishida
IPC分类号： B01J23/58 , B01J21/04 , B01J37/08 , B01J37/02 , B01J37/18 , B01J23/46 , B01J35/10 , C01C1/04
CPC分类号： B01J23/58 , B01J21/04 , B01J23/462 , B01J35/10 , B01J35/1009 , B01J37/0201 , B01J37/08 , B01J37/18 , C01C1/04 , C01C1/0411 , Y02P20/52
摘要： Provided is a method for manufacturing a catalyst with which it is possible to obtain a supported metal ammonia synthesis catalyst, in which there are restrictions in terms of producing method and producing facility, and particularly large restrictions for industrial-scale producing, in a more simple manner and so that the obtained catalyst has a high activity. This method for manufacturing an ammonia synthesis catalyst includes: a first step for preparing 12CaO.7Al2O3 having a specific surface area of 5 m2/g or above; a second step for supporting a ruthenium compound on the 12CaO.7Al2O3; and a third step for performing a reduction process on the 12CaO.7Al2O3 supporting the ruthenium compound, obtained in the second step. This invention is characterized in that the reduction process is performed until the average particle diameter of the ruthenium after the reduction process has increased by at least 15% in relation to the average particle diameter of the ruthenium before the reduction process.
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3.发明公开公开(公告)号：US20240226854A1
公开(公告)日：2024-07-11
申请号：US18612668
申请日：2024-03-21
发明人： Hideo Hosono , Masaaki Kitano , Toshiharu Yokoyama , Jiang Li , Shigeki Kawamura , Kazuhisa Kishida
IPC分类号： B01J23/58 , B01J21/04 , B01J23/46 , B01J35/60 , B01J35/61 , B01J37/02 , B01J37/08 , B01J37/18 , C01C1/04
CPC分类号： B01J23/58 , B01J21/04 , B01J23/462 , B01J35/60 , B01J35/612 , B01J37/0201 , B01J37/08 , B01J37/18 , C01C1/04 , C01C1/0411 , Y02P20/52
摘要： Provided is a method for manufacturing a catalyst with which it is possible to obtain a supported metal ammonia synthesis catalyst, in which there are restrictions in terms of producing method and producing facility, and particularly large restrictions for industrial-scale producing, in a more simple manner and so that the obtained catalyst has a high activity. This method for manufacturing an ammonia synthesis catalyst includes: a first step for preparing 12CaO·7Al2O3 having a specific surface area of 5 m2/g or above; a second step for supporting a ruthenium compound on the 12CaO·7Al2O3; and a third step for performing a reduction process on the 12CaO·7Al2O3 supporting the ruthenium compound, obtained in the second step. This invention is characterized in that the reduction process is performed until the average particle diameter of the ruthenium after the reduction process has increased by at least 15% in relation to the average particle diameter of the ruthenium before the reduction process.
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4.发明授权公开(公告)号：US11235310B2
公开(公告)日：2022-02-01
申请号：US16323745
申请日：2017-08-08
发明人： Hideo Hosono , Masaaki Kitano , Toshiharu Yokoyama , Jiang Li , Shigeki Kawamura , Kazuhisa Kishida
IPC分类号： B01J23/58 , B01J37/18 , C01C1/04 , B01J35/10 , B01J21/04 , B01J23/46 , B01J37/02 , B01J37/08
摘要： Provided is a method for manufacturing a catalyst with which it is possible to obtain a supported metal ammonia synthesis catalyst, in which there are restrictions in terms of producing method and producing facility, and particularly large restrictions for industrial-scale producing, in a more simple manner and so that the obtained catalyst has a high activity. This method for manufacturing an ammonia synthesis catalyst includes: a first step for preparing 12CaO.7Al2O3 having a specific surface area of 5 m2/g or above; a second step for supporting a ruthenium compound on the 12CaO.7Al2O3; and a third step for performing a reduction process on the 12CaO.7Al2O3 supporting the ruthenium compound, obtained in the second step. This invention is characterized in that the reduction process is performed until the average particle diameter of the ruthenium after the reduction process has increased by at least 15% in relation to the average particle diameter of the ruthenium before the reduction process.
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5.发明申请公开(公告)号：US20210016254A1
公开(公告)日：2021-01-21
申请号：US17060641
申请日：2020-10-01
发明人： Hideo Hosono , Masaaki Kitano , Toshiharu Yokoyama , Jiang Li , Shigeki Kawamura , Kazuhisa Kishida
IPC分类号： B01J23/58 , B01J37/18 , C01C1/04 , B01J35/10 , B01J21/04 , B01J23/46 , B01J37/02 , B01J37/08
摘要： Provided is a method for manufacturing a catalyst with which it is possible to obtain a supported metal ammonia synthesis catalyst, in which there are restrictions in terms of producing method and producing facility, and particularly large restrictions for industrial-scale producing, in a more simple manner and so that the obtained catalyst has a high activity. This method for manufacturing an ammonia synthesis catalyst includes: a first step for preparing 12CaO.7Al2O3 having a specific surface area of 5 m2/g or above; a second step for supporting a ruthenium compound on the 12CaO.7Al2O3; and a third step for performing a reduction process on the 12CaO.7Al2O3 supporting the ruthenium compound, obtained in the second step. This invention is characterized in that the reduction process is performed until the average particle diameter of the ruthenium after the reduction process has increased by at least 15% in relation to the average particle diameter of the ruthenium before the reduction process.
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公开(公告)号：US11819827B2
公开(公告)日：2023-11-21
申请号：US16492975
申请日：2018-03-16
IPC分类号： B01J23/75 , B01J23/46 , B01J23/745 , B01J23/755 , B01J35/10 , C01B3/04 , C01C1/04 , B01J27/24
CPC分类号： B01J23/75 , B01J23/462 , B01J23/745 , B01J23/755 , B01J35/1004 , C01B3/047 , C01C1/0411 , B01J27/24
摘要： Provided are a supported metal material showing high catalytic activity, a supported metal catalyst, a method of producing ammonia and a method of producing hydrogen using the supported metal catalyst, and a method of producing a cyanamide compound. The supported metal material of the present invention is a supported metal material in which a transition metal is supported on a support, and the support is a cyanamide compound represented by the following general formula (1): MCN2 (1), wherein M represents a group II element of the periodic table, and the specific surface area of the cyanamide compound is 1 m2 g−1 or more.
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