公开(公告)号：US11718918B2

公开(公告)日：2023-08-08

申请号：US17840663

申请日：2022-06-15

Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

Inventor： Moses M. Solomon ,  Saviour A. Umoren

IPC: C09K8/54 ,  C09K8/08 ,  C23F11/173 ,  C08L5/02 ,  C08L1/28 ,  C08L5/06 ,  C08K3/08 ,  C23G1/06 ,  C08L5/04

CPC classification number: C23F11/173 ,  C08K3/08 ,  C08L1/286 ,  C08L5/02 ,  C08L5/04 ,  C08L5/06 ,  C23G1/063 ,  C08K2003/0806 ,  C08K2201/003 ,  C08L2201/08

Abstract: A corrosion inhibitor composition, which includes i) an aqueous alcohol base fluid, ii) a mixture of at least three polysaccharides selected from carboxymethyl cellulose, gum arabic, pectin, a salt of alginic acid, chitosan, dextran, hydroxyethyl cellulose, and soluble starch, with each polysaccharide that is present in the mixture being present in an amount of 0.05 to 0.5 wt. %, based on a total weight of the corrosion inhibitor composition, iii) silver nanoparticles, and iv) a pineapple leaves extract. A method of inhibiting corrosion of metal during acid cleaning/pickling whereby the metal is treated with an acidic treatment fluid containing an acid and the corrosion inhibitor composition.

公开(公告)号：US11408079B2

公开(公告)日：2022-08-09

申请号：US16526021

申请日：2019-07-30

Applicant: King Fahd University of Petroleum and Minerals

Inventor： Moses M. Solomon ,  Saviour A. Umoren

IPC: C09K8/54 ,  C23F11/173 ,  C08L5/02 ,  C08L1/28 ,  C08L5/06 ,  C08K3/08 ,  C23G1/06 ,  C08L5/04

Abstract: A corrosion inhibitor composition, which includes i) an aqueous alcohol base fluid, ii) a mixture of at least three polysaccharides selected from carboxymethyl cellulose, gum arabic, pectin, a salt of alginic acid, chitosan, dextran, hydroxyethyl cellulose, and soluble starch, with each polysaccharide that is present in the mixture being present in an amount of 0.05 to 0.5 wt. %, based on a total weight of the corrosion inhibitor composition, iii) silver nanoparticles, and iv) a pineapple leaves extract. A method of inhibiting corrosion of metal during acid cleaning/pickling whereby the metal is treated with an acidic treatment fluid containing an acid and the corrosion inhibitor composition.

公开(公告)号：US11180856B1

公开(公告)日：2021-11-23

申请号：US16904904

申请日：2020-06-18

Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS ,  Saline Water Conversion Corporation

Inventor： Ime Bassey Obot ,  Abdelkader Meroufel ,  Ahmad A. Sorour ,  Ikenna B. Onyeachu ,  Saviour A. Umoren ,  Abdulrhaman Faleh Alenazi ,  Moses M. Solomon

IPC: C23F11/14 ,  C23F11/18 ,  C23F11/12 ,  C23F11/16

Abstract: A corrosion inhibitor composition, which includes (i) a date palm leaves extract, (ii) a benzimidazole compound having at least one a carbamate group, (iii) a pyridine compound, (iv) a thiourea compound, (v) a cinnamaldehyde compound, (vi) a metal iodide, (vii) urotropin, and (viii) a base fluid containing an alcohol and an organic acid. A method of inhibiting corrosion of metal during acid cleaning is also disclosed, whereby the metal is treated with an acidic treatment fluid containing 1 to 5 wt. % of an acid, based on a total weight of the acidic treatment fluid, and 0.1 to 5 vol. % of the corrosion inhibitor composition, based on a total volume of the acidic treatment fluid.