Author
Listed:
- S. A. Chambers
(Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, PO Box 999, MS K2-12, Richland, Washington 99352, USA)
- M. A. Henderson
(Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, PO Box 999, MS K2-12, Richland, Washington 99352, USA)
- Y. J. Kim
(Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, PO Box 999, MS K2-12, Richland, Washington 99352, USA)
- S. Thevuthasan
(Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, PO Box 999, MS K2-12, Richland, Washington 99352, USA)
Abstract
We have used high-energy X-ray photoelectron spectroscopy and diffraction (XPS/XPD), low-energy electron diffraction (LEED), high-resolution electron energy loss spectroscopy (HREELS) and temperature-programmed desorption (TPD) to determine the molecular orientation, long-range order, vibrational frequencies, and desorption temperatures for formic acid and its decomposition products onTiO2(110). Molecular adsorption occurs at coverages approaching one monolayer, producing a weakly ordered (2 × 1) surface structure. High-energy XPD reveals that the formate binds rigidly in a bidentate fashion through the oxygens to Ti cation rows along the [001] direction with an O–C–O bond angle of 126 ± 4°. During TPD some surface protons and formate anions recombine and desorb as formic acid above 250 K. However, most of the decomposition products follow reaction pathways leading toH2O, CO andH2COdesorption. Water is formed in TPD below 500 K via the abstraction of lattice oxygen by deposited acid protons.
Suggested Citation
S. A. Chambers & M. A. Henderson & Y. J. Kim & S. Thevuthasan, 1998.
"Chemisorption Geometry, Vibrational Spectra, and Thermal Desorption of Formic Acid onTiO2(110),"
Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 5(01), pages 381-385.
Handle:
RePEc:wsi:srlxxx:v:05:y:1998:i:01:n:s0218625x98000700
DOI: 10.1142/S0218625X98000700
Download full text from publisher
As the access to this document is restricted, you may want to search for a different version of it.
Corrections
All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:wsi:srlxxx:v:05:y:1998:i:01:n:s0218625x98000700. See general information about how to correct material in RePEc.
If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.
We have no bibliographic references for this item. You can help adding them by using this form .
If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Tai Tone Lim (email available below). General contact details of provider: http://www.worldscinet.com/srl/srl.shtml .
Please note that corrections may take a couple of weeks to filter through
the various RePEc services.