Patents by Inventor M. Nasiruzzaman SHAIKH

M. Nasiruzzaman SHAIKH has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11980875
    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.
    Type: Grant
    Filed: August 23, 2022
    Date of Patent: May 14, 2024
    Assignee: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS
    Inventors: M. Nasiruzzaman Shaikh, S. M. Shakil Hussain, Md. Abdul Aziz
  • Patent number: 11980870
    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.
    Type: Grant
    Filed: September 1, 2022
    Date of Patent: May 14, 2024
    Assignee: King Fahd University of Petroleum and Minerals
    Inventor: M. Nasiruzzaman Shaikh
  • Publication number: 20240091753
    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.
    Type: Application
    Filed: August 23, 2022
    Publication date: March 21, 2024
    Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS
    Inventors: M. Nasiruzzaman SHAIKH, S. M. Shakil HUSSAIN, Md. Abdul AZIZ
  • Patent number: 11712680
    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.
    Type: Grant
    Filed: August 16, 2022
    Date of Patent: August 1, 2023
    Assignee: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS
    Inventors: M. Nasiruzzaman Shaikh, Md. Abdul Aziz
  • Publication number: 20230029112
    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.
    Type: Application
    Filed: September 1, 2022
    Publication date: January 26, 2023
    Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS
    Inventor: M. Nasiruzzaman SHAIKH
  • Publication number: 20220401927
    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.
    Type: Application
    Filed: August 16, 2022
    Publication date: December 22, 2022
    Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS
    Inventors: M. Nasiruzzaman SHAIKH, Md. Abdul AZIZ
  • Patent number: 11471861
    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.
    Type: Grant
    Filed: January 2, 2020
    Date of Patent: October 18, 2022
    Assignee: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS
    Inventor: M. Nasiruzzaman Shaikh
  • Patent number: 11452992
    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.
    Type: Grant
    Filed: March 20, 2019
    Date of Patent: September 27, 2022
    Assignee: King Fahd University of Petroleum and Minerals
    Inventors: M. Nasiruzzaman Shaikh, Md. Abdul Aziz
  • Patent number: 11446636
    Abstract: Chemoselective and regioselective hydrogenation can be conducted using green sources, e.g., metal nanoparticles on plant stem supports in water. Heterogeneous catalytic systems, including “dip catalysts,” can catalyze transfer hydrogenation of, e.g., styrenics, unfunctionalized olefins, quinolines, and other N-heteroaromatics. Palladium nanoparticles having longest dimensions of, e.g., 15 to 20 nm, may be anchored on jute plant (Corchorus genus) stem supports, i.e., “green” supports (GS). Pd nanoparticles can be decorated onto the jute stem (GS) by in-situ reduction of, e.g., K2PdCl4, in aqueous medium at 70° C., using formic acid as the reducing agent. The Pd-GS show uniform distribution of Pd on the cellulose matrix of the jute stem, and can conduct chemoselective transfer hydrogenation of numerous styrenics, olefins, and heterocycles (including aromatics) with high functional group tolerance, even in water.
    Type: Grant
    Filed: December 16, 2019
    Date of Patent: September 20, 2022
    Assignee: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS
    Inventor: M. Nasiruzzaman Shaikh
  • Publication number: 20220152587
    Abstract: Chemoselective and regioselective hydrogenation can be conducted using green sources, e.g., metal nanoparticles on plant stem supports in water. Heterogeneous catalytic systems, including “dip catalysts,” can catalyze transfer hydrogenation of, e.g., styrenics, unfuctionalized olefins, quinolines, and other N-heteroaromatics. Palladium nanoparticles having longest dimensions of, e.g., 15 to 20 nm, may be anchored on jute plant (Corchorus genus) stem supports, i.e., “green” supports (GS). Pd nanoparticles can be decorated onto the jute stem (GS) by in-situ reduction of, e.g., K2PdCl4, in aqueous medium at 70° C., using formic acid as the reducing agent. The Pd-GS show uniform distribution of Pd on the cellulose matrix of the jute stem, and can conduct chemoselective transfer hydrogenation of numerous styrenics, olefins, and heterocycles (including aromatics) with high functional group tolerance, even in water.
    Type: Application
    Filed: December 16, 2019
    Publication date: May 19, 2022
    Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS
    Inventor: M. Nasiruzzaman Shaikh
  • Publication number: 20220152588
    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.
    Type: Application
    Filed: January 2, 2020
    Publication date: May 19, 2022
    Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS
    Inventor: M. Nasiruzzaman SHAIKH
  • Patent number: 11124530
    Abstract: A zirconium metal-organic framework, which is a coordination product formed between zirconium ion clusters and a linker that links together adjacent zirconium ion clusters, wherein the linker is of formula (I) wherein R1 to R4 are independently hydrogen, an optionally substituted alkyl, an optionally substituted aryl, an optionally substituted arylalkyl, an optionally substituted alkoxy, a hydroxyl, a carboxyl, a halo, a nitro, or a cyano, R5 is hydrogen, an optionally substituted alkyl, an optionally substituted alkoxy, an amino, a hydroxyl, a carboxyl, a halo, a nitro, or a cyano, and R6 and R7 are independently a hydrogen or an optionally substituted alkyl group having 1 to 4 carbon atoms. A method of detecting copper cations and/or chromate anions in a fluid sample with zirconium metal-organic framework.
    Type: Grant
    Filed: October 22, 2019
    Date of Patent: September 21, 2021
    Assignee: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS
    Inventors: Aasif Helal, M. Nasiruzzaman Shaikh
  • Patent number: 10858327
    Abstract: A method of reducing an aromatic ring under relatively mild condition using sub-nano particles of a transition metal supported on super paramagnetic iron oxide nanoparticles (SPIONs). The catalyst is efficient for catalyzing the reduction of both carbocyclic and heterocyclic compound. In compound comprising both carbocyclic and heterocyclic aromatic rings, the catalyst displays high regioselectivity for the heterocyclic ring.
    Type: Grant
    Filed: February 13, 2020
    Date of Patent: December 8, 2020
    Assignee: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS
    Inventors: M. Nasiruzzaman Shaikh, Zain H. Yamani
  • Publication number: 20200309339
    Abstract: A method of reducing an aromatic ring under relatively mild condition using sub-nano particles of a transition metal supported on super paramagnetic iron oxide nanoparticles (SPIONs). The catalyst is efficient for catalyzing the reduction of both carbocyclic and heterocyclic compound. In compound comprising both carbocyclic and heterocyclic aromatic rings, the catalyst displays high regioselectivity for the heterocyclic ring.
    Type: Application
    Filed: February 13, 2020
    Publication date: October 1, 2020
    Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS
    Inventors: M. Nasiruzzaman SHAIKH, Zain H. Yamani
  • Publication number: 20200298212
    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.
    Type: Application
    Filed: March 20, 2019
    Publication date: September 24, 2020
    Applicant: King Fahd University of Petroleum and Minerals
    Inventors: M. Nasiruzzaman SHAIKH, Md. Abdul Aziz
  • Patent number: 10618878
    Abstract: A method of reducing an aromatic ring under relatively mild condition using sub-nano particles of a transition metal supported on super paramagnetic iron oxide nanoparticles (SPIONs). The catalyst is efficient for catalyzing the reduction of both carbocyclic and heterocyclic compound. In compound comprising both carbocyclic and heterocyclic aromatic rings, the catalyst displays high regioselectivity for the heterocyclic ring.
    Type: Grant
    Filed: March 27, 2019
    Date of Patent: April 14, 2020
    Assignee: King Fahd University of Petroleum and Minerals
    Inventors: M. Nasiruzzaman Shaikh, Zain H. Yamani
  • Patent number: 10463391
    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.
    Type: Grant
    Filed: October 4, 2018
    Date of Patent: November 5, 2019
    Assignee: King Fahd University of Petroleum and Minerals
    Inventors: M. Nasiruzzaman Shaikh, Md. Abdul Aziz, Aasif Helal
  • Patent number: 10370397
    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 a catalyst for various C—C bond forming reactions. The catalyst may be recovered with ease by attracting the catalyst with a magnet.
    Type: Grant
    Filed: October 4, 2018
    Date of Patent: August 6, 2019
    Assignee: Kind Fahd University of Petroleum and Minerals
    Inventors: M. Nasiruzzaman Shaikh, Md. Abdul Aziz, Aasif Helal
  • Publication number: 20190029718
    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.
    Type: Application
    Filed: October 4, 2018
    Publication date: January 31, 2019
    Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS
    Inventors: M. Nasiruzzaman SHAIKH, Md. Abdul Aziz, Aasif Helal
  • Publication number: 20190031697
    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.
    Type: Application
    Filed: October 4, 2018
    Publication date: January 31, 2019
    Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS
    Inventors: M. Nasiruzzaman SHAIKH, Md. Abdul AZIZ, Aasif HELAL