TY - JOUR
T1 - Cu-BTC and Fe-BTC metal-organic frameworks
T2 - Role of the materials structural features on their performance for volatile hydrocarbons separation
AU - Autie-Castro, G.
AU - Autie, M. A.
AU - Rodríguez-Castellón, E.
AU - Aguirre, C.
AU - Reguera, E.
N1 - Publisher Copyright:
© 2015 Elsevier B.V.
PY - 2015/9/1
Y1 - 2015/9/1
N2 - The separation of alkanes (nC5 to nC9), propane and propylene, and aromatic (benzene, toluene and o-xylene) hydrocarbons using the metal-organic frameworks Cu-BTC and Fe-BTC as stationary phase was evaluated from inverse gas chromatography data. Both materials were found able to separate mixtures of these volatile hydrocarbons. The nature of such behavior is discussed according to the possible guest-host interactions during the molecules adsorption and retention in the column and considering the molecules size and shape and the porous framework topology. From the recorded chromatographic profiles, the retention times for the considered hydrocarbons were calculated and then used to obtain the involved differential adsorption heats and the values for the separation coefficient. Cu-BTC is a long-range ordered crystalline material while Fe-BTC shows gel-like features. Such structural differences modulate the pore accessibility and the adsorption interactions. In this contribution, the effects of these structural differences on the molecules adsorption and separation are discussed. From the recorded adsorption data, information on the pore volume, adsorption potentials and probable pore topology for Fe-BTC was obtained.
AB - The separation of alkanes (nC5 to nC9), propane and propylene, and aromatic (benzene, toluene and o-xylene) hydrocarbons using the metal-organic frameworks Cu-BTC and Fe-BTC as stationary phase was evaluated from inverse gas chromatography data. Both materials were found able to separate mixtures of these volatile hydrocarbons. The nature of such behavior is discussed according to the possible guest-host interactions during the molecules adsorption and retention in the column and considering the molecules size and shape and the porous framework topology. From the recorded chromatographic profiles, the retention times for the considered hydrocarbons were calculated and then used to obtain the involved differential adsorption heats and the values for the separation coefficient. Cu-BTC is a long-range ordered crystalline material while Fe-BTC shows gel-like features. Such structural differences modulate the pore accessibility and the adsorption interactions. In this contribution, the effects of these structural differences on the molecules adsorption and separation are discussed. From the recorded adsorption data, information on the pore volume, adsorption potentials and probable pore topology for Fe-BTC was obtained.
KW - Cu-BTC
KW - Fe-BTC
KW - HKUST-1
KW - Hydrocarbons adsorption
KW - Hydrocarbons separation
KW - MoFs for separation
UR - http://www.scopus.com/inward/record.url?scp=84935001016&partnerID=8YFLogxK
U2 - 10.1016/j.colsurfa.2015.05.044
DO - 10.1016/j.colsurfa.2015.05.044
M3 - Artículo
SN - 0927-7757
VL - 481
SP - 351
EP - 357
JO - Colloids and Surfaces A: Physicochemical and Engineering Aspects
JF - Colloids and Surfaces A: Physicochemical and Engineering Aspects
ER -