公开(公告)号：US20250161922A1

公开(公告)日：2025-05-22

申请号：US18517868

申请日：2023-11-22

Applicant: Khalifa University of Science and Technology

Inventor： Kyriaki POLYCHRONOPOULOU ,  Swati SINGH ,  Eswara Vara Prasadarao K KOMARALA

IPC: B01J23/89 ,  B01J35/64 ,  B01J37/02 ,  B01J37/08 ,  C01B21/087

Abstract: The present disclosure relates to ruthenium-based catalysts for ammonia (NH3) synthesis at mild conditions and methods of preparing the ruthenium-based catalysts. The ruthenium-based catalyst includes a MgFeOx support and ruthenium metal loaded onto the support, wherein the catalyst has the chemical formula of MgFeOx—Ru, wherein x is the number of oxygen atoms present. In an example, x is equal to four. The MgFeOx support is prepared from MgFe layered double hydroxide (LDH). An amount of ruthenium present in the ruthenium-based catalyst ranges from about 0.1 to about 1.0 wt %.

公开(公告)号：US20240083747A1

公开(公告)日：2024-03-14

申请号：US17900374

申请日：2022-08-31

Applicant: Khalifa University of Science and Technology

Inventor： Kyriaki POLYCHRONOPOULOU ,  Angelos M. EFSTATHIOU ,  Aseel Gamal Suliman HUSSIEN ,  Constantinos DAMASKINOS

IPC: C01B3/40

CPC classification number: C01B3/40 ,  C01B2203/0244 ,  C01B2203/0261 ,  C01B2203/0277 ,  C01B2203/1058 ,  C01B2203/1082 ,  C01B2203/1241

Abstract: Embodiments include a ceria-supported catalyst. The ceria-supported catalyst may include the formula: Ni/Ce—X-10Cu—O, wherein X is one or more dopants. Embodiments further include a method of processing a feed stock. The method may include contacting the feed stock with a ceria-supported catalyst, sufficient to generate a product including hydrogen and carbon monoxide; wherein the ceria-supported catalyst has the following formula:


Ni/Ce—X-10Cu—O

, wherein X is one or more dopants. Embodiments further include a method of making a ceria-supported catalyst and other related methods.

公开(公告)号：US20230226528A1

公开(公告)日：2023-07-20

申请号：US17928958

申请日：2021-06-30

Applicant: Khalifa University of Science and Technology

Inventor： Yasser ALWAHEDI ,  Kyriaki POLYCHRONOPOULOU ,  Xinnan LU ,  Safa GABER ,  Dina GABER ,  Georgia BASINA ,  Malathe SAMIR

IPC: B01J27/185 ,  B01J35/00 ,  B01J37/03 ,  B01J37/28 ,  B01J35/10 ,  B01J37/02 ,  B01J37/08

CPC classification number: B01J27/1853 ,  B01J35/0013 ,  B01J35/006 ,  B01J37/035 ,  B01J37/28 ,  B01J35/1061 ,  B01J37/0209 ,  B01J37/08

Abstract: Embodiments include hydrogenating catalysts and methods of making the same. The catalyst includes nanoparticles of a metal phosphide, such as nickel phosphide with a Ni5P4 phase. Also included are methods of hydrogenating a gas that contains sulfur. The methods include directing the gas containing sulfur to a catalyst that includes nanoparticles of a metal phosphide, and contacting the catalyst with the gas containing sulfur to produce a hydrogenated gas.