About cookies on this site Our websites require some cookies to function properly (required). In addition, other cookies may be used with your consent to analyze site usage, improve the user experience and for advertising. For more information, please review your options. By visiting our website, you agree to our processing of information as described in IBM’sprivacy statement. To provide a smooth navigation, your cookie preferences will be shared across the IBM web domains listed here.
Publication
Catalysis Today
Paper
First-principles molecular dynamics study of small molecules in zeolites
Abstract
We present first-principles (based on electronic structure calculations) molecular dynamics simulations of the adsorption of methanol and water in zeolites. In contrast to most previous calculations we take the infinite zeolite structure fully into account. Our calculations reproduce the measured IR spectra, and thus allow for the first time a direct assignment of the measured bands. Methanol and water appear not to be protonated at low (one molecule per acid site) coverages. At higher coverages, however, the proton detaches from the framework and is available for acid catalyzed reactions in the zeolite. We precede our discussion with a critical evaluation of available theoretical approaches. © 1999 Elsevier Science B.V. All rights reserved.