公开(公告)号：US20250121316A1

公开(公告)日：2025-04-17

申请号：US18915714

申请日：2024-10-15

Applicant: EXXONMOBIL TECHNOLOGY AND ENGINEERING COMPANY

Inventor： Corey J. KAMINSKY ,  Shabab A. Abedi ,  Hilda B. Vroman ,  Wesley Sattler

IPC: B01D53/04 ,  B01J20/26

Abstract: Amine-functionalized organosilica materials are provided that have improved stability when exposed to oxidizing/oxygen-containing environments during cycling of temperature, such as the cycling of temperature that occurs when using a material as a sorbent during successive adsorption/desorption cycles. Methods of performing CO2 sorption/desorption with improved stability of the organosilica sorbent material are also provided. The improved stability is achieved in part by using amine-functionalized organosilica materials where the amine-functionalization is provided by functional groups that include primary amines but do not include secondary amines. Still further improvements in stability can be achieved when the functionalization is provided by a functional group that includes a primary amine while also not having any hydrogens on a carbon atom that is in the beta position relative to the primary amine.