Volume 128, Issue 35 pp. 10424-10428
Zuschrift

Tuning Pore Size in Square-Lattice Coordination Networks for Size-Selective Sieving of CO2

Dr. Kai-Jie Chen

Dr. Kai-Jie Chen

Department of Chemical & Environmental Sciences, Bernal Institute, University of Limerick, Plassey House, Limerick, Republic of Ireland

MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou, 510275 P.R. China

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Dr. David G. Madden

Dr. David G. Madden

Department of Chemical & Environmental Sciences, Bernal Institute, University of Limerick, Plassey House, Limerick, Republic of Ireland

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Dr. Tony Pham

Dr. Tony Pham

Department of Chemistry, University of South Florida, 4202 E. Fowler Ave., CHE205, Tampa, FL, 33620-5250 USA

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Katherine A. Forrest

Katherine A. Forrest

Department of Chemistry, University of South Florida, 4202 E. Fowler Ave., CHE205, Tampa, FL, 33620-5250 USA

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Amrit Kumar

Amrit Kumar

Department of Chemical & Environmental Sciences, Bernal Institute, University of Limerick, Plassey House, Limerick, Republic of Ireland

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Dr. Qing-Yuan Yang

Dr. Qing-Yuan Yang

Department of Chemical & Environmental Sciences, Bernal Institute, University of Limerick, Plassey House, Limerick, Republic of Ireland

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Dr. Wei Xue

Dr. Wei Xue

MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou, 510275 P.R. China

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Prof. Dr. Brian Space

Prof. Dr. Brian Space

Department of Chemistry, University of South Florida, 4202 E. Fowler Ave., CHE205, Tampa, FL, 33620-5250 USA

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Dr. John J. Perry IV

Dr. John J. Perry IV

Department of Chemical & Environmental Sciences, Bernal Institute, University of Limerick, Plassey House, Limerick, Republic of Ireland

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Prof. Dr. Jie-Peng Zhang

Corresponding Author

Prof. Dr. Jie-Peng Zhang

MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou, 510275 P.R. China

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Prof. Dr. Xiao-Ming Chen

Prof. Dr. Xiao-Ming Chen

MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou, 510275 P.R. China

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Prof. Dr. Michael J. Zaworotko

Corresponding Author

Prof. Dr. Michael J. Zaworotko

Department of Chemical & Environmental Sciences, Bernal Institute, University of Limerick, Plassey House, Limerick, Republic of Ireland

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First published: 21 July 2016
Citations: 47

Abstract

Porous materials capable of selectively capturing CO2 from flue-gases or natural gas are of interest in terms of rising atmospheric CO2 levels and methane purification. Size-exclusive sieving of CO2 over CH4 and N2 has rarely been achieved. Herein we show that a crystal engineering approach to tuning of pore-size in a coordination network, [Cu(quinoline-5-carboxyate)2]n (Qc-5-Cu) ena+bles ultra-high selectivity for CO2 over N2 (SCN≈40 000) and CH4 (SCM≈3300). Qc-5-Cu-sql-β, a narrow pore polymorph of the square lattice (sql) coordination network Qc-5-Cu-sql-α, adsorbs CO2 while excluding both CH4 and N2. Experimental measurements and molecular modeling validate and explain the performance. Qc-5-Cu-sql-β is stable to moisture and its separation performance is unaffected by humidity.