skip to main content
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Study of carbon dioxide adsorption on a Cu-nitroprusside polymorph

Abstract

A careful structural characterization was carried out to unequivocally determine the structure of the synthesized material. The TGA, DRIFTS and a Pawley fitting of the XRD powder profiles indicate that the hydrated and in situ dehydrated polymorph crystallizes in the orthorhombic space group Pnma. Meanwhile, the CO 2 isosteric heat of adsorption appears to be independent of loading with an average value of 30 kJ/mol. This translates to a physisorption type interaction, where the adsorption energy corresponding to wall and lateral interactions are mutually compensated to produce, an apparently, homogeneous adsorption energy. The somewhat high adsorption energy is probably due to the confinement of the CO 2 molecules in the nitroprusside pores. Statistical Physics and the Dubinin theory for pore volume filling allowed model the CO 2 equilibrium adsorption process in Cu-nitroprusside. A DRIFTS test for the adsorbed CO 2 displayed a peak at about 2338 cm -1 that was assigned to a contribution due to physical adsorption of the molecule. Another peak found at 2362 cm -1 evidenced that this molecule interacts with the Cu 2+, which appears to act as an electron accepting Lewis acid site. In conclusion, the aim of the present paper is to report amore » Pnma stable Cu-nitroprusside polymorph obtained by the precipitation method that can adsorb carbon dioxide.« less

Authors:
 [1];  [1];  [1];  [1];  [1];  [2];  [2]
  1. Univ. of Turabo, Gurabo (Puerto Rico). Inst. for Physical Chemical Applied Research, School of Science
  2. Univ. of Puerto Rico, Mayaguez (Puerto Rico). Dept. of Chemical Engineering
Publication Date:
Research Org.:
Univ. of Turabo, Gurabo (Puerto Rico)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1335960
Grant/Contract Number:  
NA0000672; CHE-0959334
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Solid State Chemistry
Additional Journal Information:
Journal Volume: 184; Journal Issue: 5; Journal ID: ISSN 0022-4596
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; Adsorption space; Cu-nitroprusside; Molecular interaction; Confinement; Lewis acid

Citation Formats

Roque-Malherbe, R., Lozano, C., Polanco, R., Marquez, F., Lugo, F., Hernandez-Maldonado, A., and Primera-Pedrozo, J. N. Study of carbon dioxide adsorption on a Cu-nitroprusside polymorph. United States: N. p., 2011. Web. doi:10.1016/j.jssc.2011.02.029.
Roque-Malherbe, R., Lozano, C., Polanco, R., Marquez, F., Lugo, F., Hernandez-Maldonado, A., & Primera-Pedrozo, J. N. Study of carbon dioxide adsorption on a Cu-nitroprusside polymorph. United States. doi:10.1016/j.jssc.2011.02.029.
Roque-Malherbe, R., Lozano, C., Polanco, R., Marquez, F., Lugo, F., Hernandez-Maldonado, A., and Primera-Pedrozo, J. N. Sat . "Study of carbon dioxide adsorption on a Cu-nitroprusside polymorph". United States. doi:10.1016/j.jssc.2011.02.029. https://www.osti.gov/servlets/purl/1335960.
@article{osti_1335960,
title = {Study of carbon dioxide adsorption on a Cu-nitroprusside polymorph},
author = {Roque-Malherbe, R. and Lozano, C. and Polanco, R. and Marquez, F. and Lugo, F. and Hernandez-Maldonado, A. and Primera-Pedrozo, J. N.},
abstractNote = {A careful structural characterization was carried out to unequivocally determine the structure of the synthesized material. The TGA, DRIFTS and a Pawley fitting of the XRD powder profiles indicate that the hydrated and in situ dehydrated polymorph crystallizes in the orthorhombic space group Pnma. Meanwhile, the CO2 isosteric heat of adsorption appears to be independent of loading with an average value of 30 kJ/mol. This translates to a physisorption type interaction, where the adsorption energy corresponding to wall and lateral interactions are mutually compensated to produce, an apparently, homogeneous adsorption energy. The somewhat high adsorption energy is probably due to the confinement of the CO2 molecules in the nitroprusside pores. Statistical Physics and the Dubinin theory for pore volume filling allowed model the CO2 equilibrium adsorption process in Cu-nitroprusside. A DRIFTS test for the adsorbed CO2 displayed a peak at about 2338 cm-1 that was assigned to a contribution due to physical adsorption of the molecule. Another peak found at 2362 cm-1 evidenced that this molecule interacts with the Cu2+, which appears to act as an electron accepting Lewis acid site. In conclusion, the aim of the present paper is to report a Pnma stable Cu-nitroprusside polymorph obtained by the precipitation method that can adsorb carbon dioxide.},
doi = {10.1016/j.jssc.2011.02.029},
journal = {Journal of Solid State Chemistry},
number = 5,
volume = 184,
place = {United States},
year = {2011},
month = {3}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Citation Metrics:
Cited by: 4 works
Citation information provided by
Web of Science

Save / Share: