Hydrophobic sorbents for CO2/H2O displacement desorption applications

US11420182B2 · kind B2 · utility

Assignees

• Exxon Mobil Technology and Engineering Company · US
• TDA Research, Inc. · US

Inventors

• Chuansheng Bai · Phillipsburg, US
• Majosefina Cunningham · Whitehall, US
• Patrick P. McCall · Matawan, US
• Hans Thomann · Bedminster, US
• Jeannine Elizabeth Elliott · Superior, US
• Vinh T. Nguyen · San Jose, US

Key dates

• Filing date: Mar 2, 2018
• Grant date: Aug 23, 2022
• Expiry date: Mar 20, 2040

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01D2259/40086
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The disclosure generally relates to CCS sorbents, particularly for CO2/H2O displacement desorption process. The sorbent includes an aluminum oxide support and an alkali metal salt impregnated on the support, and a silicon modification of the sorbent to reduce water uptake by the sorbent and make it more hydrophobic. The silicon modification can be an organosilyl moiety added after the initial sorbent is complete, or a silica source added to the aluminum oxide structure, typically via impregnation. The sorbents demonstrate better H2O/CO2 ratios. Compositions and methods of making are disclosed.