Metallo-organic polymers for gas separation and purification

US6491740B1 · kind B1 · utility

Assignee

• The BOC Group Limited · US

Inventors

• Qing Min Wang · North Andover, US
• Dongmin Shen · Berkeley Heights, US
• Martin Bulow
• Miu Ling Lau · Edison, US
• Frank R. Fitch · New York, US
• Shuguang Deng · Somerville, US

Key dates

• Filing date: Jul 11, 2000
• Grant date: Dec 10, 2002
• Expiry date: Jul 11, 2020

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S95/90
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The present invention provides for methods and compositions for gas separation and purification utilizing a metallo-organic polymer adsorbent in processes for separating carbon dioxide, water, nitrogen oxides and hydrocarbons from gas streams. The metallo-organic polymer adsorbent composition has the formula:[R(L)n]mMn,wherein R represents an organic spacer selected from the group consisting of an organic cyclic or acyclic compound; L represents a ligation group substituted on the organic spacer selected from the group consisting of carboxylate group, —C(═O)O−; dithiocarboxylate group, —C(═S)S−; and &bgr;-diketonate group, —C(═O)C(R′)═C(—O−)—, wherein R′═H, or an aliphatic or aromatic group; M represents a transition metal or a rare earth metal selected from the group consisting of I to VIIB and VIII metals; m is the oxidation state of transition metal; and n is the number of the ligation group substituted on the organic spacer.