Metal-organic framework sorbents having hierarchical pore structure and method of making the same

US9474997B1 · kind B1 · utility

Assignee

• The United States of America as represented by the Secretary of the Army · US

Inventors

• Gregory W. Peterson · Bel Air, US
• Jared B. DeCoste · Bel Air, US
• Tyler J Demasky · Glen Burnie, US

Key dates

• Filing date: Mar 19, 2015
• Grant date: Oct 25, 2016
• Expiry date: Apr 24, 2035

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01D2259/4583
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

This invention is directed to a porous sorbent comprising a modified metal-organic framework (MOF) having a hierarchical pore structure. The MOF is modified by plasma-enhanced chemical vapor deposition with air, fluorocarbons, or other sources of fluorine. In preferred embodiments the MOFs are zirconium based. The modified MOF, while surprisingly retaining its crystal structure, comprises a mixture of micropores and mesopores and embedded fluorine atoms.