Jump to main content
Jump to site search

Issue 17, 2016
Previous Article Next Article

Kinetics and mechanisms of alcohol dehydration pathways on alumina materials

Author affiliations

Abstract

The steady state rates of ethene and diethyl ether formation in parallel ethanol dehydration reactions at 573 and 623 K are mechanistically and kinetically described by the same rate expression on different alumina materials (α-, γ-, and η-Al2O3), implying that alumina materials have similar surface sites under reaction environments. In situ chemical titration using pyridine as a titrant elucidates similar site densities (∼0.12 sites nm−2 and ∼0.07 sites nm−2 for ethene formation and ∼0.14 sites nm−2 and ∼0.09 sites nm−2 for diethyl ether formation on γ- and η-Al2O3, respectively) on γ- and η-Al2O3 indicating that similar surface features exist on both γ- and η-Al2O3. Pyridine-ethanol co-feed experiments show that pyridine inhibited the formation of ethene to a greater extent than diethyl ether suggesting that the two parallel dehydration reactions are not catalyzed by a common active site.

Graphical abstract: Kinetics and mechanisms of alcohol dehydration pathways on alumina materials

Back to tab navigation
Please wait while Download options loads

Supplementary files

Publication details

The article was received on 06 May 2016, accepted on 08 Jun 2016 and first published on 27 Jun 2016


Article type: Paper
DOI: 10.1039/C6CY00990E
Citation: Catal. Sci. Technol., 2016,6, 6667-6678
  •   Request permissions

    Kinetics and mechanisms of alcohol dehydration pathways on alumina materials

    M. Kang and A. Bhan, Catal. Sci. Technol., 2016, 6, 6667
    DOI: 10.1039/C6CY00990E

Search articles by author