Acidity and location of cations (H+, Na+) in HEMT and NaEMT determined using benzene adsorption

Bao Lian Su; J. M. Manoli; C. Potvin; D. Barthomeuf

doi:10.1039/FT9938900857

Acidity and location of cations (H⁺, Na⁺) in HEMT and NaEMT determined using benzene adsorption

Bao Lian Su, J. M. Manoli, C. Potvin, D. Barthomeuf

Résultats de recherche: Contribution à un journal/une revue › Article › Revue par des pairs

Résumé

Infrared spectroscopy is used to characterize the hydroxyls of HEMT and the interactions with benzene of these hydroxyls and of Na⁺ cations in NaEMT. Benzene adsorption studies reveal that HEMT is a stronger solid acid than HY or HSAPO-37 and that ca. 55-65% of the theoretical protons are still present after evacuation at 773 K. The changes with loading of the CH out-of-plane vibration of the adsorbed benzene give access to the number of interaction sites (H⁺ or Na⁺). In NaEMT all the cations are accessible to benzene. This may result from Na⁺ ion migration towards the large cages in the presence of the aromatic.

langue originale	Anglais
Pages (de - à)	857-862
Nombre de pages	6
journal	Journal of the Chemical Society, Faraday Transactions
Volume	89
Numéro de publication	5
Les DOIs	https://doi.org/10.1039/FT9938900857
Etat de la publication	Publié - 1 déc. 1993
Modification externe	Oui

Accès au document

10.1039/FT9938900857

Autres fichiers et liens

Link to publication in Scopus

Empreinte digitale Examiner les sujets de recherche de « Acidity and location of cations (H<sup>+</sup>, Na<sup>+</sup>) in HEMT and NaEMT determined using benzene adsorption ». Ensemble, ils forment une empreinte digitale unique.

Contient cette citation

@article{ee4e3dfe7a654d67be7d1edf4f6a03fc,

title = "Acidity and location of cations (H+, Na+) in HEMT and NaEMT determined using benzene adsorption",

abstract = "Infrared spectroscopy is used to characterize the hydroxyls of HEMT and the interactions with benzene of these hydroxyls and of Na+ cations in NaEMT. Benzene adsorption studies reveal that HEMT is a stronger solid acid than HY or HSAPO-37 and that ca. 55-65% of the theoretical protons are still present after evacuation at 773 K. The changes with loading of the CH out-of-plane vibration of the adsorbed benzene give access to the number of interaction sites (H+ or Na+). In NaEMT all the cations are accessible to benzene. This may result from Na+ ion migration towards the large cages in the presence of the aromatic.",

author = "Su, {Bao Lian} and Manoli, {J. M.} and C. Potvin and D. Barthomeuf",

year = "1993",

month = dec,

day = "1",

doi = "10.1039/FT9938900857",

language = "English",

volume = "89",

pages = "857--862",

journal = "Journal of the Chemical Society, Faraday Transactions",

issn = "0956-5000",

publisher = "Royal Society of Chemistry",

number = "5",

}

TY - JOUR

T1 - Acidity and location of cations (H+, Na+) in HEMT and NaEMT determined using benzene adsorption

AU - Su, Bao Lian

AU - Manoli, J. M.

AU - Potvin, C.

AU - Barthomeuf, D.

PY - 1993/12/1

Y1 - 1993/12/1

N2 - Infrared spectroscopy is used to characterize the hydroxyls of HEMT and the interactions with benzene of these hydroxyls and of Na+ cations in NaEMT. Benzene adsorption studies reveal that HEMT is a stronger solid acid than HY or HSAPO-37 and that ca. 55-65% of the theoretical protons are still present after evacuation at 773 K. The changes with loading of the CH out-of-plane vibration of the adsorbed benzene give access to the number of interaction sites (H+ or Na+). In NaEMT all the cations are accessible to benzene. This may result from Na+ ion migration towards the large cages in the presence of the aromatic.

AB - Infrared spectroscopy is used to characterize the hydroxyls of HEMT and the interactions with benzene of these hydroxyls and of Na+ cations in NaEMT. Benzene adsorption studies reveal that HEMT is a stronger solid acid than HY or HSAPO-37 and that ca. 55-65% of the theoretical protons are still present after evacuation at 773 K. The changes with loading of the CH out-of-plane vibration of the adsorbed benzene give access to the number of interaction sites (H+ or Na+). In NaEMT all the cations are accessible to benzene. This may result from Na+ ion migration towards the large cages in the presence of the aromatic.

UR - http://www.scopus.com/inward/record.url?scp=0000959054&partnerID=8YFLogxK

U2 - 10.1039/FT9938900857

DO - 10.1039/FT9938900857

M3 - Article

AN - SCOPUS:0000959054

VL - 89

SP - 857

EP - 862

JO - Journal of the Chemical Society, Faraday Transactions

JF - Journal of the Chemical Society, Faraday Transactions

SN - 0956-5000

IS - 5

ER -