Homogeneous and front-induced surface transformations

MATIAS RAFTI*, FLORIAN LOVIS , YINGFENG ZENG , RONALD IMBIHL

CHEMICAL PHYSICS LETTERS

Elsevier

Lugar: Amsterdam; Año: 2007 vol. 446 p. 323 - 328

0009-2614

The NH3+O2 reaction over Pt(100) single-crystal surface was studied under UHV conditions using photoemission electron microscopy (PEEM) as spatially resolving method and work function measurements via a Kelvin probe and temperature programmed reaction (TPR) experiments as integral methods. A broad hysteresis in the reaction rates occurs and one finds, reaction fronts as well as spatially homogeneous transitions in the adsorbate layer.3+O2 reaction over Pt(100) single-crystal surface was studied under UHV conditions using photoemission electron microscopy (PEEM) as spatially resolving method and work function measurements via a Kelvin probe and temperature programmed reaction (TPR) experiments as integral methods. A broad hysteresis in the reaction rates occurs and one finds, reaction fronts as well as spatially homogeneous transitions in the adsorbate layer. 2007 Elsevier B.V. All rights reserved2007 Elsevier B.V. All rights reserved