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公开(公告)号：US20240286121A1
公开(公告)日：2024-08-29
申请号：US18607097
申请日：2024-03-15
Inventor： M. Nasiruzzaman SHAIKH , S. M. Shakil HUSSAIN , Md. Abdul AZIZ
CPC classification number: B01J31/1625 , B01J31/2414 , B01J35/23 , B01J35/393 , B01J37/16 , B01J2231/321 , B82Y30/00
Abstract: A method for making a magnetic-nanoparticle-supported catalyst includes reacting a ferrocenyl phosphine compound with an amino alcohol compound to form a ligand having a phosphine group, an amine group and at least one hydroxyl group; anchoring the ligand to a surface of magnetic nanoparticles via an oxygen atom of the hydroxyl group to form a ligand complex; combining the ligand complex with a metal precursor comprising Rh to bind the metal precursor with the ligand complex and form the magnetic-particle-supported catalyst. The magnetic-particle-supported catalyst is a Rh complex of magnetic-Fe3O4-nanoparticle-supported ferrocenyl phosphine catalyst.
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公开(公告)号：US20240367156A1
公开(公告)日：2024-11-07
申请号：US18312998
申请日：2023-05-05
Inventor： M. Nasiruzzaman SHAIKH
Abstract: A magnetically recoverable catalyst that includes a core material and a shell material, where the core material is an Fe—Co alloy containing Fe and Co in an equal molar ratio and the shell material is a graphitic carbon. A process for producing the magnetically recoverable catalyst includes mixing of nanoparticles of Fe3O4 with a Co metal-organic-framework material. The magnetically recoverable catalyst of the present disclosure can be used for selective hydrogenation of furfural.
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公开(公告)号：US20240269652A1
公开(公告)日：2024-08-15
申请号：US18606569
申请日：2024-03-15
Inventor： M. Nasiruzzaman SHAIKH
CPC classification number: B01J23/44 , B01J31/06 , B01J35/393 , B01J35/40 , B01J37/04 , B01J37/08 , B01J37/16 , C07C1/26 , B01J2231/4211 , B01J2231/4261 , C07C2523/44
Abstract: A solid-supported Pd catalyst is suitable for C—C bond formation, e.g., via Suzuki-Miyaura and Mizoroki-Heck cross-coupling reactions, with a support that is reusable, cost-efficient, regioselective, and naturally available. Such catalysts may contain Pd nanoparticles on jute plant sticks (GS), i.e., Pd@GS, and may be formed by reducing, e.g., K2PdCl4 with NaBH4 in water, and then used this as a “dip catalyst.” The dip catalyst can catalyze Suzuki-Miyaura and Mizoroki-Heck cross coupling-reactions in water. The catalysts may have a homogeneous distribution of Pd nanoparticles with average dimensions, e.g., within a range of 7 to 10 nm on the solid support. Suzuki-Miyaura cross-coupling reactions may achieve conversions of, e.g., 97% with TOFs around 4692 h−1, Mizoroki-Heck reactions with conversions of, e.g., a 98% and TOFs of 237 h−1, while the same catalyst sample may be used for 7 consecutive cycles, i.e., without addition of any fresh catalyst.
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公开(公告)号：US20240293807A1
公开(公告)日：2024-09-05
申请号：US18607139
申请日：2024-03-15
Inventor： M. Nasiruzzaman SHAIKH , S. M. Shakil HUSSAIN , Md. Abdul Aziz
CPC classification number: B01J31/1625 , B01J31/2414 , B01J35/23 , B01J35/393 , B01J37/16 , B01J2231/321 , B82Y30/00
Abstract: A method for making a magnetic-nanoparticle-supported catalyst includes reacting a ferrocenyl phosphine compound with an amino alcohol compound to form a ligand having a phosphine group, an amine group and at least one hydroxyl group; anchoring the ligand to a surface of magnetic nanoparticles via an oxygen atom of the hydroxyl group to form a ligand complex; combining the ligand complex with a metal precursor comprising Rh to bind the metal precursor with the ligand complex and form the magnetic-particle-supported catalyst. The magnetic-particle-supported catalyst is a Rh complex of magnetic-Fe3O4-nanoparticle-supported ferrocenyl phosphine catalyst.
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公开(公告)号：US20240286120A1
公开(公告)日：2024-08-29
申请号：US18607019
申请日：2024-03-15
Inventor： M. Nasiruzzaman SHAIKH , S. M. Shakil HUSSAIN , Md. Abdul AZIZ
CPC classification number: B01J31/1625 , B01J31/2414 , B01J35/23 , B01J35/393 , B01J37/16 , B01J2231/321 , B82Y30/00
Abstract: A method for making a magnetic-nanoparticle-supported catalyst includes reacting a ferrocenyl phosphine compound with an amino alcohol compound to form a ligand having a phosphine group, an amine group and at least one hydroxyl group; anchoring the ligand to a surface of magnetic nanoparticles via an oxygen atom of the hydroxyl group to form a ligand complex; combining the ligand complex with a metal precursor comprising Rh to bind the metal precursor with the ligand complex and form the magnetic-particle-supported catalyst. The magnetic-particle-supported catalyst is a Rh complex of magnetic-Fe3O4-nanoparticle-supported ferrocenyl phosphine catalyst.
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Patent Agency Ranking
公开(公告)号：US20220152588A1
公开(公告)日：2022-05-19
申请号：US16732579
申请日：2020-01-02
Inventor： M. Nasiruzzaman SHAIKH
Abstract: A solid-supported Pd catalyst is suitable for C—C bond formation, e.g., via Suzuki-Miyaura and Mizoroki-Heck cross-coupling reactions, with a support that is reusable, cost-efficient, regioselective, and naturally available. Such catalysts may contain Pd nanoparticles on jute plant sticks (GS), i.e., Pd@GS, and may be formed by reducing, e.g., K2PdCl4 with NaBH4 in water, and then used this as a “dip catalyst.” The dip catalyst can catalyze Suzuki-Miyaura and Mizoroki-Heck cross coupling-reactions in water. The catalysts may have a homogeneous distribution of Pd nanoparticles with average dimensions, e.g., within a range of 7 to 10 nm on the solid support. Suzuki-Miyaura cross-coupling reactions may achieve conversions of, e.g., 97% with TOFs around 4692 h−1, Mizoroki-Heck reactions with conversions of, e.g., a 98% and TOFs of 237 h−1, while the same catalyst sample may be used for 7 consecutive cycles, i.e., without addition of any fresh catalyst.
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公开(公告)号：US20240091753A1
公开(公告)日：2024-03-21
申请号：US17893841
申请日：2022-08-23
Inventor： M. Nasiruzzaman SHAIKH , S. M. Shakil HUSSAIN , Md. Abdul AZIZ
CPC classification number: B01J31/1625 , B01J31/2414 , B01J35/0013 , B01J35/006 , B01J37/16 , B82Y30/00
Abstract: A method for making a magnetic-nanoparticle-supported catalyst includes reacting a ferrocenyl phosphine compound with an amino alcohol compound to form a ligand having a phosphine group, an amine group and at least one hydroxyl group; anchoring the ligand to a surface of magnetic nanoparticles via an oxygen atom of the hydroxyl group to form a ligand complex; combining the ligand complex with a metal precursor comprising Rh to bind the metal precursor with the ligand complex and form the magnetic-particle-supported catalyst. The magnetic-particle-supported catalyst is a Rh complex of magnetic-Fe3O4-nanoparticle-supported ferrocenyl phosphine catalyst.
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公开(公告)号：US20220401927A1
公开(公告)日：2022-12-22
申请号：US17820111
申请日：2022-08-16
Inventor： M. Nasiruzzaman SHAIKH , Md. Abdul AZIZ
Abstract: A supported catalyst having rhodium particles with an average diameter of less than 1 nm disposed on a support material containing magnetic iron oxide (e.g. Fe3O4). A method of producing the supported catalyst and a process of reducing nitroarenes to corresponding aromatic amines employing the supported catalyst with a high product yield are also described. The supported catalyst may be recovered with ease using an external magnet and reused.
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公开(公告)号：US20190031697A1
公开(公告)日：2019-01-31
申请号：US16151446
申请日：2018-10-04
Inventor： M. Nasiruzzaman SHAIKH , Md. Abdul AZIZ , Aasif HELAL
IPC: C07F15/02 , C07C45/50 , B01J35/02 , C07C201/12 , B01J35/00 , B01J31/28 , B01J31/22 , C07C2/86 , C07C41/30 , C07F17/02 , C07C17/269 , C07C47/228 , C07C47/24 , C07C47/277 , C07C15/52 , C07C43/215 , C07C25/24 , C07C205/16 , C07C205/44
CPC classification number: C07F15/02 , B01J23/745 , B01J23/8906 , B01J31/1625 , B01J31/2295 , B01J31/2414 , B01J31/28 , B01J35/0013 , B01J35/0033 , B01J37/0203 , B01J37/343 , B01J2231/321 , B01J2231/4261 , B01J2531/822 , B01J2531/824 , B01J2531/842 , B01J2540/66 , C07C2/861 , C07C17/269 , C07C41/30 , C07C45/50 , C07C45/505 , C07C201/12 , C07C2531/22 , C07C2531/28 , C07F17/02 , C07C47/228 , C07C47/24 , C07C47/277 , C07C15/52 , C07C43/215 , C07C25/24 , C07C205/16 , C07C205/44
Abstract: A functionalized magnetic nanoparticle including an organometallic sandwich compound and a magnetic metal oxide. The functionalized magnetic nanoparticle may be reacted with a metal precursor to fol in a catalyst for various C—C bond forming reactions. The catalyst may be recovered with ease by attracting the catalyst with a magnet.
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公开(公告)号：US20190029718A1
公开(公告)日：2019-01-31
申请号：US16151471
申请日：2018-10-04
Inventor： M. Nasiruzzaman SHAIKH , Md. Abdul Aziz , Aasif Helal
IPC: A61B17/3207 , A61B17/22 , A61B17/00
CPC classification number: A61B17/320758 , A61B17/22 , A61B2017/00734 , A61B2017/22038 , A61B2017/22079 , A61B2017/320775 , A61B2217/005
Abstract: A functionalized magnetic nanoparticle including an organometallic sandwich compound and a magnetic metal oxide. The functionalized magnetic nanoparticle may be reacted with a metal precursor to form in a catalyst for various C—C bond forming reactions. The catalyst may be recovered with ease by attracting the catalyst with a magnet.
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