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제목 OVERCOMING TWO CARBON DIOXIDE ADSORPTION STEPS IN DIAMINE-APPENDED METAL-ORGANIC FRAMEWORKS
작성자 KCRC 등록일 2019-03-11 조회수 91



 

OVERCOMING TWO CARBON DIOXIDE ADSORPTION STEPS IN DIAMINE-APPENDED METAL-ORGANIC FRAMEWORKS

문헌번호

US 2019-0060867 A1 (2019.02.28)

출원번호

16/045616 (2018.07.25)

출원인

The Regents of the University of California | ExxonMobil Research and Engineering Company

발명자

Jeffrey R. Long | Simon Christopher Weston | Phillip J. Milner | Jeffrey D. Martell | Rebecca L. Siegelman

Current IPC

(Main)

B01J-020/22

 

 

우선권번호

-

 

 

요약

Primary, secondary (1º,2º) alkylethylenediamine- and alkylpropylenediamine-appended variants of metal-organic framework are provided for CO2 capture applications. Increasing the size of the alkyl group on the secondary amine enhances the stability to diamine volatilization from the metal sites. Two-step adsorption/desorption profiles are overcome by minimizing steric interactions between adjacent ammonium carbamate chains. For instance, the isoreticularly expanded framework Mg2(dotpdc) (dotpdc4=4,4-dioxido-[1,1:4,1-terphenyl]-3,3-dicarboxylate), yields diamine-appended adsorbents displaying a single CO2 adsorption step. Further, use of the isomeric framework Mg-IRMOF-74-II or Mg2(pc-dobpdc) (pc-dobpdc4=3,3-dioxidobiphenyl-4,4-dicarboxylate, pc=para-carboxylate) also leads to a single CO2 adsorption step with bulky diamines. By relieving steric interactions between adjacent ammonium carbamate chains, these frameworks enable step-shaped CO2 adsorption, decreased water co-adsorption, and increased stability to diamine loss. Variants of Mg2(dotpdc) and Mg2(pc-dobpdc) functionalized with large diamines such as N-(n-heptyl)ethylenediamine have utility as adsorbents for carbon capture applications.

대표청구항

1. An adsorption material, comprising: a metal-organic framework comprising a plurality of metal ions and a plurality of polytopic organic linkers, wherein each polytopic organic linker in the plurality of polytopic organic linker is connected to at least two metal ions in the plurality of metal ions; anda plurality of ligands, wherein each respective ligand in the plurality of ligands is amine appended to a metal ion in the plurality of metal ions of the metal-organic framework, each respective ligand in the plurality of ligands comprising: [Image]wherein, X is a metal ion of the metal-organic framework,Z is carbon, silicon, germanium, sulfur, or selenium,Q is carbon, silicon, germanium, sulfur, or selenium,R1, R2, R3, R4, R5, R7, and R8 are each independently selected from H, halogen, substituted or unsubstituted alkyl, substituted or unsubstituted heteroalkyl, substituted or unsubstituted aryl, substituted or unsubstituted heteroaryl, or substituted or unsubstituted heterocycloalkyl, andR6 is substituted or unsubstituted alkyl, substituted or unsubstituted heteroalkyl, substituted or unsubstituted aryl, substituted or unsubstituted heteroaryl, or substituted or unsubstituted heterocycloalkyl comprising at least three non-hydrogen atoms.

WIPS 패밀리

US2019-0060867A1

 

 

이전글/다음글
첨부파일 us20190060867a1p.pdf
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