Location of MTBE and toluene in the channel system of the zeolite mordenite: Adsorption and host-guest interactions
Abstract
This paper reports a study of the location of Methyl Tertiary Butyl Ether (MTBE) and toluene molecules adsorbed in the pores of the organophylic zeolite mordenite from an aqueous solution. The presence of these organic molecules in the zeolite channels was revealed by structure refinement performed by the Rietveld method. About 3 molecules of MTBE and 3.6 molecules of toluene per unit cell were incorporated into the cavities of mordenite, representing 75% and 80% of the total absorption capacity of this zeolite. In both cases a water molecule was localized inside the side pocket of mordenite. The saturation capacity determined by the adsorption isotherms, obtained by batch experiments, and the weight loss given by thermogravimetric (TG) analyses were in very good agreement with these values. The interatomic distances obtained after the structural refinements suggest MTBE could be connected to the framework through a water molecule, while toluene could be bonded to framework oxygen atoms. The rapid and high adsorption of these hydrocarbons into the organophylic mordenite zeolite makes this cheap and environmental friendly material a suitable candidate for the removal of these pollutants from water. - graphical abstract: Location of MTBE (a) and toluene (b) in mordenite channels (projection alongmore »
- Authors:
-
- Department of Earth Sciences, University of Torino Via Valperga Caluso 35, I-10125, Torino (Italy)
- Department of Earth Sciences, University of Ferrara, Via G. Saragat 1, I-44100, Ferrara (Italy)
- Department of Chemistry, University of Ferrara, Via L. Borsari 26, I-44100 Ferrara (Italy)
- Research Centre for Non-Conventional Energy-Istituto ENI Donegani, Environmental Technologies, Via Fauser 4, I-28100 Novara (Italy)
- Publication Date:
- OSTI Identifier:
- 22149839
- Resource Type:
- Journal Article
- Journal Name:
- Journal of Solid State Chemistry
- Additional Journal Information:
- Journal Volume: 194; Other Information: Copyright (c) 2012 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0022-4596
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; ABSORPTION; ADSORPTION; ADSORPTION ISOTHERMS; AQUEOUS SOLUTIONS; BUTYL ETHER; INTERACTIONS; INTERATOMIC DISTANCES; MOLECULES; MORDENITE; OXYGEN; THERMAL GRAVIMETRIC ANALYSIS; TOLUENE; WATER; X-RAY DIFFRACTION
Citation Formats
Arletti, Rossella, Martucci, Annalisa, Alberti, Alberto, Pasti, Luisa, Nassi, Marianna, and Bagatin, Roberto. Location of MTBE and toluene in the channel system of the zeolite mordenite: Adsorption and host-guest interactions. United States: N. p., 2012.
Web. doi:10.1016/J.JSSC.2012.04.024.
Arletti, Rossella, Martucci, Annalisa, Alberti, Alberto, Pasti, Luisa, Nassi, Marianna, & Bagatin, Roberto. Location of MTBE and toluene in the channel system of the zeolite mordenite: Adsorption and host-guest interactions. United States. https://doi.org/10.1016/J.JSSC.2012.04.024
Arletti, Rossella, Martucci, Annalisa, Alberti, Alberto, Pasti, Luisa, Nassi, Marianna, and Bagatin, Roberto. 2012.
"Location of MTBE and toluene in the channel system of the zeolite mordenite: Adsorption and host-guest interactions". United States. https://doi.org/10.1016/J.JSSC.2012.04.024.
@article{osti_22149839,
title = {Location of MTBE and toluene in the channel system of the zeolite mordenite: Adsorption and host-guest interactions},
author = {Arletti, Rossella and Martucci, Annalisa and Alberti, Alberto and Pasti, Luisa and Nassi, Marianna and Bagatin, Roberto},
abstractNote = {This paper reports a study of the location of Methyl Tertiary Butyl Ether (MTBE) and toluene molecules adsorbed in the pores of the organophylic zeolite mordenite from an aqueous solution. The presence of these organic molecules in the zeolite channels was revealed by structure refinement performed by the Rietveld method. About 3 molecules of MTBE and 3.6 molecules of toluene per unit cell were incorporated into the cavities of mordenite, representing 75% and 80% of the total absorption capacity of this zeolite. In both cases a water molecule was localized inside the side pocket of mordenite. The saturation capacity determined by the adsorption isotherms, obtained by batch experiments, and the weight loss given by thermogravimetric (TG) analyses were in very good agreement with these values. The interatomic distances obtained after the structural refinements suggest MTBE could be connected to the framework through a water molecule, while toluene could be bonded to framework oxygen atoms. The rapid and high adsorption of these hydrocarbons into the organophylic mordenite zeolite makes this cheap and environmental friendly material a suitable candidate for the removal of these pollutants from water. - graphical abstract: Location of MTBE (a) and toluene (b) in mordenite channels (projection along the [001] direction). Highlights: Black-Right-Pointing-Pointer We investigated the MTBE and toluene adsorption process into an organophilic zeolite mordenite. Black-Right-Pointing-Pointer The presence of MTBE and toluene in mordenite was determined by X-ray diffraction studies. Black-Right-Pointing-Pointer About 3 molecules of MTBE and 3.6 molecules of toluene per unit cell were incorporated into the zeolite cavities. Black-Right-Pointing-Pointer MTBE is connected to the framework through a water molecule. Black-Right-Pointing-Pointer Toluene is directly bonded to framework oxygen atoms.},
doi = {10.1016/J.JSSC.2012.04.024},
url = {https://www.osti.gov/biblio/22149839},
journal = {Journal of Solid State Chemistry},
issn = {0022-4596},
number = ,
volume = 194,
place = {United States},
year = {Mon Oct 15 00:00:00 EDT 2012},
month = {Mon Oct 15 00:00:00 EDT 2012}
}