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Title: Amine-appended metal-organic frameworks exhibiting a new adsorption mechanism for carbon dioxide separations

Patent ·
OSTI ID:1986639

An adsorption material is disclosed that comprises a metal-organic framework and a plurality of ligands. The metal-organic framework comprising a plurality of metal ions. Each respective ligand in the plurality of ligands is amine appended to a respective metal ion in the plurality of metal ions of the metal-organic framework. Each respective ligand in the plurality of ligands comprises a substituted 1,3-propanediamine. The adsorbent has a CO2 adsorption capacity of greater than 2.50 mmol/g at 150 mbar CO2 at 40° C. Moreover, the adsorbent is configured to regenerate at less than 120° C. An example ligand is diamine 2,2-dimethyl-1,3-propanediamine. An example of the metal-organic framework is Mg2(dobpdc), where dobpdc4− is 4,4′-dioxidobiphenyl-3,3′-dicarboxylate. Example applications for the adsorption material are removal of carbon dioxide from flue gas and biogasses.

Research Organization:
Univ. of California, Berkeley, CA (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
SC0001015
Assignee:
The Regents of the University of California (Oakland, CA)
Patent Number(s):
11,458,431
Application Number:
16/481,039
OSTI ID:
1986639
Resource Relation:
Patent File Date: 02/17/2018
Country of Publication:
United States
Language:
English

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