Adsorption and reaction of alcohols on poorly crystalline Al2O3 surfaces

Ja Hun Kwak, Donghai Mei, Roger Rousseau, Janos Szanyi, Yong Wang, Charles H F Peden

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

γ-alumina is an important catalytic material both as an active phase and as a support for other catalytically active phases, with applications ranging from petroleum refining to automotive emission control. Of particular importance for understanding the catalytic properties of γ-alumina, relating its surface structure to the origin of Lewis and Bronsted acidity has been of considerable interest and has been studied by solid state NMR and FTIR spectroscopies, and most recently by theoretical calculations. Here, we describe recent studies using ultra-high resolution NMR spectroscopy as an especially useful probe of the Al2O3 surface structure, and its relevance to catalytic behavior. In particular, we coorelate the NMR spectra with measurements of the adsorption and reaction of light alcohols, demonstrating a strong dependence of this chemistry on the presence of specific 5-coordinate Al3+ ions. These sites, in turn, are a function of the dehydration temperature of the alumina material before use.

Original languageEnglish
Title of host publicationACS National Meeting Book of Abstracts
Publication statusPublished - 2011
Event241st ACS National Meeting and Exposition - Anaheim, CA, United States
Duration: Mar 27 2011Mar 31 2011

Other

Other241st ACS National Meeting and Exposition
CountryUnited States
CityAnaheim, CA
Period3/27/113/31/11

Fingerprint

Aluminum Oxide
Alcohols
Alumina
Crystalline materials
Adsorption
Surface structure
Nuclear magnetic resonance
Petroleum refining
Emission control
Dehydration
Acidity
Nuclear magnetic resonance spectroscopy
Spectroscopy
Ions
Temperature

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

Cite this

Kwak, J. H., Mei, D., Rousseau, R., Szanyi, J., Wang, Y., & Peden, C. H. F. (2011). Adsorption and reaction of alcohols on poorly crystalline Al2O3 surfaces. In ACS National Meeting Book of Abstracts

Adsorption and reaction of alcohols on poorly crystalline Al2O3 surfaces. / Kwak, Ja Hun; Mei, Donghai; Rousseau, Roger; Szanyi, Janos; Wang, Yong; Peden, Charles H F.

ACS National Meeting Book of Abstracts. 2011.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Kwak, JH, Mei, D, Rousseau, R, Szanyi, J, Wang, Y & Peden, CHF 2011, Adsorption and reaction of alcohols on poorly crystalline Al2O3 surfaces. in ACS National Meeting Book of Abstracts. 241st ACS National Meeting and Exposition, Anaheim, CA, United States, 3/27/11.
Kwak JH, Mei D, Rousseau R, Szanyi J, Wang Y, Peden CHF. Adsorption and reaction of alcohols on poorly crystalline Al2O3 surfaces. In ACS National Meeting Book of Abstracts. 2011
Kwak, Ja Hun ; Mei, Donghai ; Rousseau, Roger ; Szanyi, Janos ; Wang, Yong ; Peden, Charles H F. / Adsorption and reaction of alcohols on poorly crystalline Al2O3 surfaces. ACS National Meeting Book of Abstracts. 2011.
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