title: Highly Selective Separation of C2H2from CO2by a New Dichromate-Based Hybrid Ultramicroporous Material.
abstract: A new hybrid ultramicroporous material, [Ni(1,4-di(pyridine-2-yl)benzene)2(Cr2O7)]n(DICRO-4-Ni-i), has been prepared and structurally characterized. Pure gas sorption isotherms and molecular modeling of sorbate-sorbent interactions imply strong selectivity for C2H2over CO2(SAC). Dynamic gas breakthrough coupled with temperature-programmed desorption experiments were conducted on DICRO-4-Ni-i and two other porous materials reported to exhibit high SAC, TIFSIX-2-Cu-i and MIL-100(Fe), using a C2H2/CO2/He (10:5:85) gas mixture. Whereas CO2/C2H2coadsorption by MIL-100(Fe) mitigated the purity of trapped C2H2, negligible coadsorption and high SACwere observed for DICRO-4-Ni-i and TIFSIX-2-Cu-i.
authors.affiliation: Bernal Institute, Department of Chemical Sciences, University of Limerick , Limerick, Republic of Ireland.
authors.forename: Hayley S
authors.initials: HS
authors.lastname: Scott
authors.affiliation: Bernal Institute, Department of Chemical Sciences, University of Limerick , Limerick, Republic of Ireland.
authors.forename: Mohana
authors.initials: M
authors.lastname: Shivanna
authors.affiliation: Bernal Institute, Department of Chemical Sciences, University of Limerick , Limerick, Republic of Ireland.
authors.forename: Alankriti
authors.initials: A
authors.lastname: Bajpai
authors.affiliation: Bernal Institute, Department of Chemical Sciences, University of Limerick , Limerick, Republic of Ireland.
authors.forename: David G
authors.initials: DG
authors.lastname: Madden
authors.affiliation: Bernal Institute, Department of Chemical Sciences, University of Limerick , Limerick, Republic of Ireland.
authors.forename: Kai-Jie
authors.identifier: http://orcid.org/0000-0001-7581-6571
authors.initials: KJ
authors.lastname: Chen
authors.affiliation: Department of Chemistry, University of South Florida , 4202 East Fowler Avenue, Tampa, Florida 33620, United States.
authors.forename: Tony
authors.initials: T
authors.lastname: Pham
authors.affiliation: Department of Chemistry, University of South Florida , 4202 East Fowler Avenue, Tampa, Florida 33620, United States.
authors.forename: Katherine A
authors.initials: KA
authors.lastname: Forrest
authors.affiliation: Department of Chemistry, University of South Florida , 4202 East Fowler Avenue, Tampa, Florida 33620, United States.
authors.forename: Adam
authors.initials: A
authors.lastname: Hogan
authors.affiliation: Department of Chemistry, University of South Florida , 4202 East Fowler Avenue, Tampa, Florida 33620, United States.
authors.forename: Brian
authors.initials: B
authors.lastname: Space
authors.affiliation: Bernal Institute, Department of Chemical Sciences, University of Limerick , Limerick, Republic of Ireland.
authors.forename: John J
authors.initials: JJ
authors.lastname: Perry Iv
authors.affiliation: Bernal Institute, Department of Chemical Sciences, University of Limerick , Limerick, Republic of Ireland.
authors.forename: Michael J
authors.identifier: http://orcid.org/0000-0002-1360-540X
authors.initials: MJ
authors.lastname: Zaworotko
keywords: acetylene; adsorption; carbon dioxide; separation; ultramicroporous materials