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The formation and decomposition of KOH on Ru(001)

✍ Scribed by P.A. Thiel; J. Hrbek; R.A. Depaola; F.M. Hoffmann

Publisher: Elsevier Science
Year: 1984
Tongue: English
Weight: 490 KB
Volume: 108
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(84)80361-9

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✦ Synopsis

Potassium hydrosidc

is formed when vatcr is adsorbed at 80 K on 3 Ru(O0 1) surface precovered wirh potassium. The vibrational spectrum of KOH obtained whh EELS is characterized by an OH stretch at 3570-3670 cm-'; 1~ svx a~ 1340-l 500 cm-' and 200-800 cm-' are tentatively assigned to KOH bending zmd K -0 stretching vibrations rrspcctiv~ !y_

Heating the surface io 500-600 K results in decomposition of KOH and desorption of the dissociation products. The decomposition pathway is found to dcpcnd strongly on the potassium precovenge.

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