Separation of carbon dioxide from methane utilizing zeolitic imidazolate framework materials

US8142746B2 · kind B2 · utility

Assignee

• EXXONMOBIL RESEARCH AND ENGINEERING COMPANY · US

Inventors

• Sebastian C. Reyes · Readington, US
• Zheng Ni · Annandale, US
• Charanjit S. Paur · Phillipsburg, US
• Pavel Kortunov · Flemington, US
• John Zengel · Centerville, US
• Harry W. Deckman · Clinton, US

Key dates

• Filing date: Jan 23, 2009
• Grant date: Mar 27, 2012
• Expiry date: Jan 23, 2029

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P30/00
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The present invention relates to the selective separation of carbon dioxide (“CO2”) from methane (“CH4”) in streams containing both carbon dioxide and methane utilizing a zeolitic imidazolate framework (“ZIF”) material. Preferably, the stream to be separated is fed to the present process in a substantially gaseous phase. In preferred embodiments, the current invention is utilized in a process to separate carbon dioxide from natural gas streams preferably for sequestration of at least a portion of the carbon dioxide present in the natural gas.