Separation of Oxygen and Nitrogen by Porous Cyanometallates

B. Zamora, M. Autie, J. L. Contreras, M. Centeno, E. Reguera

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

The adsorption-based separation in porous solids takes place through steric, kinetic, or equilibrium effect selectivity. In this contribution the oxygen-nitrogen separation by four porous frameworks representative of cyanometallates was studied by inverse gas chromatography. The following materials were considered: Cd 3 [Co(CN) 6 ] 2 (cubic), Zn 3 [Co(CN) 6 ] 2 (rhombohedral), Zn 3 K 2 [Fe(CN) 6 ] 2 (rhombohedral) and Co[Fe(CN) 5 NO] (cubic). Chromatographic separation profiles from gases mixtures using columns of these materials were recorded. For columns prepared from rhombohedral zinc hexacyanocolbaltate(III) excellent separation of O 2 and N 2 was observed. Such behavior was attributed to a kinetic-based selectivity related to the size and shape for the pore windows of this material. The porous framework of this zinc phase is formed by ellipsoidal cavities (12.5 × 9 × 8 Å) communicated by elliptical windows of ~ 5 Å. For Cd 3 [Co(CN) 6 ] 2 and Co[Fe(CN) 5 NO] also kinetic-based selectivity was observed while for Zn 3 K 2 [Fe(CN) 6 ] 2 the K + ion located close to the cavity windows hinders the porous windows accessibility for nitrogen and oxygen molecules. All the samples to be studied were characterized from X-ray diffraction, infrared spectroscopy, termogravimetric and adsorption data. © Taylor & Francis Group, LLC.
Original languageAmerican English
Pages (from-to)692-699
Number of pages8
JournalSeparation Science and Technology
DOIs
StatePublished - 1 Jan 2010
Externally publishedYes

Fingerprint

Nitrogen
Oxygen
Kinetics
Zinc
Adsorption
Gas mixtures
Gas chromatography
Infrared spectroscopy
Ions
X ray diffraction
Molecules

Cite this

Zamora, B. ; Autie, M. ; Contreras, J. L. ; Centeno, M. ; Reguera, E. / Separation of Oxygen and Nitrogen by Porous Cyanometallates. In: Separation Science and Technology. 2010 ; pp. 692-699.
@article{74866e6a8de24b1684f13ac3259ded41,
title = "Separation of Oxygen and Nitrogen by Porous Cyanometallates",
abstract = "The adsorption-based separation in porous solids takes place through steric, kinetic, or equilibrium effect selectivity. In this contribution the oxygen-nitrogen separation by four porous frameworks representative of cyanometallates was studied by inverse gas chromatography. The following materials were considered: Cd 3 [Co(CN) 6 ] 2 (cubic), Zn 3 [Co(CN) 6 ] 2 (rhombohedral), Zn 3 K 2 [Fe(CN) 6 ] 2 (rhombohedral) and Co[Fe(CN) 5 NO] (cubic). Chromatographic separation profiles from gases mixtures using columns of these materials were recorded. For columns prepared from rhombohedral zinc hexacyanocolbaltate(III) excellent separation of O 2 and N 2 was observed. Such behavior was attributed to a kinetic-based selectivity related to the size and shape for the pore windows of this material. The porous framework of this zinc phase is formed by ellipsoidal cavities (12.5 × 9 × 8 {\AA}) communicated by elliptical windows of ~ 5 {\AA}. For Cd 3 [Co(CN) 6 ] 2 and Co[Fe(CN) 5 NO] also kinetic-based selectivity was observed while for Zn 3 K 2 [Fe(CN) 6 ] 2 the K + ion located close to the cavity windows hinders the porous windows accessibility for nitrogen and oxygen molecules. All the samples to be studied were characterized from X-ray diffraction, infrared spectroscopy, termogravimetric and adsorption data. {\circledC} Taylor & Francis Group, LLC.",
author = "B. Zamora and M. Autie and Contreras, {J. L.} and M. Centeno and E. Reguera",
year = "2010",
month = "1",
day = "1",
doi = "10.1080/01496390903571101",
language = "American English",
pages = "692--699",
journal = "Separation Science and Technology",
issn = "0149-6395",
publisher = "Taylor and Francis Ltd.",

}

Separation of Oxygen and Nitrogen by Porous Cyanometallates. / Zamora, B.; Autie, M.; Contreras, J. L.; Centeno, M.; Reguera, E.

In: Separation Science and Technology, 01.01.2010, p. 692-699.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Separation of Oxygen and Nitrogen by Porous Cyanometallates

AU - Zamora, B.

AU - Autie, M.

AU - Contreras, J. L.

AU - Centeno, M.

AU - Reguera, E.

PY - 2010/1/1

Y1 - 2010/1/1

N2 - The adsorption-based separation in porous solids takes place through steric, kinetic, or equilibrium effect selectivity. In this contribution the oxygen-nitrogen separation by four porous frameworks representative of cyanometallates was studied by inverse gas chromatography. The following materials were considered: Cd 3 [Co(CN) 6 ] 2 (cubic), Zn 3 [Co(CN) 6 ] 2 (rhombohedral), Zn 3 K 2 [Fe(CN) 6 ] 2 (rhombohedral) and Co[Fe(CN) 5 NO] (cubic). Chromatographic separation profiles from gases mixtures using columns of these materials were recorded. For columns prepared from rhombohedral zinc hexacyanocolbaltate(III) excellent separation of O 2 and N 2 was observed. Such behavior was attributed to a kinetic-based selectivity related to the size and shape for the pore windows of this material. The porous framework of this zinc phase is formed by ellipsoidal cavities (12.5 × 9 × 8 Å) communicated by elliptical windows of ~ 5 Å. For Cd 3 [Co(CN) 6 ] 2 and Co[Fe(CN) 5 NO] also kinetic-based selectivity was observed while for Zn 3 K 2 [Fe(CN) 6 ] 2 the K + ion located close to the cavity windows hinders the porous windows accessibility for nitrogen and oxygen molecules. All the samples to be studied were characterized from X-ray diffraction, infrared spectroscopy, termogravimetric and adsorption data. © Taylor & Francis Group, LLC.

AB - The adsorption-based separation in porous solids takes place through steric, kinetic, or equilibrium effect selectivity. In this contribution the oxygen-nitrogen separation by four porous frameworks representative of cyanometallates was studied by inverse gas chromatography. The following materials were considered: Cd 3 [Co(CN) 6 ] 2 (cubic), Zn 3 [Co(CN) 6 ] 2 (rhombohedral), Zn 3 K 2 [Fe(CN) 6 ] 2 (rhombohedral) and Co[Fe(CN) 5 NO] (cubic). Chromatographic separation profiles from gases mixtures using columns of these materials were recorded. For columns prepared from rhombohedral zinc hexacyanocolbaltate(III) excellent separation of O 2 and N 2 was observed. Such behavior was attributed to a kinetic-based selectivity related to the size and shape for the pore windows of this material. The porous framework of this zinc phase is formed by ellipsoidal cavities (12.5 × 9 × 8 Å) communicated by elliptical windows of ~ 5 Å. For Cd 3 [Co(CN) 6 ] 2 and Co[Fe(CN) 5 NO] also kinetic-based selectivity was observed while for Zn 3 K 2 [Fe(CN) 6 ] 2 the K + ion located close to the cavity windows hinders the porous windows accessibility for nitrogen and oxygen molecules. All the samples to be studied were characterized from X-ray diffraction, infrared spectroscopy, termogravimetric and adsorption data. © Taylor & Francis Group, LLC.

U2 - 10.1080/01496390903571101

DO - 10.1080/01496390903571101

M3 - Article

SP - 692

EP - 699

JO - Separation Science and Technology

JF - Separation Science and Technology

SN - 0149-6395

ER -