公开(公告)号：US20240401206A1

公开(公告)日：2024-12-05

申请号：US18327549

申请日：2023-06-01

Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

Inventor： Mohammad Abu Jafar MAZUMDER ,  Shaikh Asrof ALI ,  Ibrahim Yahia Yaagoob MOHAMED ,  Lipiar Khan Mohammad Osman GONI ,  Chandrabhan VERMA

IPC: C23F11/14

Abstract: A method for inhibiting corrosion of a metal article in contact with a solution including an acid includes adding to the solution a corrosion inhibitor in an amount of 1 to 500 parts per million (ppm) based on the total number of parts by mass of the solution, thereby adsorbing the corrosion inhibitor onto the surface of the metal article via at least one interaction to form a barrier layer in the form of a composite. The at least one interaction comprises a physisorption, a chemisorption, and a retro donation. The corrosion inhibitor has a formula (I) where n is any integer from 8 to 21 inclusive and R1, R2, R3, R4, and R5 are each independently selected from the group consisting of a hydrogen atom, a hydroxyl group, an optionally substituted alkyl, an optionally substituted cycloalkyl, and an optionally substituted alkoxy.

公开(公告)号：US20250084310A1

公开(公告)日：2025-03-13

申请号：US18458348

申请日：2023-08-30

Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

Inventor： Mohammad Abu Jafar MAZUMDER ,  Shaikh Asrof ALI ,  Lipiar Khan Mohammad Osman GONI

IPC: C09K15/30 ,  C08F126/04 ,  C09D5/08 ,  C09D139/02 ,  C23F11/04

Abstract: A corrosion inhibitor composition is provided. The corrosion inhibitor composition includes a polycationic polymeric surfactant. The polycationic polymeric surfactant is a copolymer including polymerized units of cationic heterocyclic monomer units and dicationic heterocyclic comonomer units including a quaternary ammonium group. The cationic heterocyclic monomer units and the dicationic heterocyclic comonomer units are alkyl diallyl ammonium units. The quaternary ammonium group comprises a first C8-C16 alkyl group, a second C4-C8 alkyl group, a third C1-C2 alkyl group, and a fourth C1-C2 alkyl group. A method of corrosion inhibition is also provided.

公开(公告)号：US20210032113A1

公开(公告)日：2021-02-04

申请号：US16525949

申请日：2019-07-30

Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

Inventor： Md. Abdul AZIZ ,  Shakhawat Hossain CHOWDHURY ,  Mohammad Abu Jafar MAZUMDER ,  Md lmran Rahman CHOWDHURY

IPC: C01B32/324 ,  C01B32/342

Abstract: Jute stick/stalk can be used to prepared and carboxylated to yield useful activated carbons, e.g., for removing Pb2+ from drinking water. Such activated carbons can act as an inexpensive adsorbents using agricultural waste or by-products. Carboxylation of jute stick activated carbon (JSAC) can improve its efficiency for Pb2+ removal, e.g., from aqueous solutions, even if its BET surface area is reduced. Carboxylated JSAC (JSAC-COO−) can have surface areas around 615.3±0.5, 1, 2.5, 5, 10, 15, 20, or 25 m2/g. JSAC-COO− can treat varied Pb2+ concentrations, 10, 25 mg/L, etc., pHs, e.g., 4.0, 7.0, etc., temperatures, e.g., 15° C., 27° C., etc., and contact periods, e.g., 1, 5, 10, 15, 30, 60 minutes, etc, achieving up to 99.8% Pb2+ removal within 15 minutes of contact JSAC-COO− adsorption capacity can be >25.0 mg Pb2+/g, as well as other metal ions, with potential for water and/or gas treatment.