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The influence of hydrogen coadsorption on hydrocarbon chemistry on transition metal surfaces is a key aspect to an improved understanding of catalytic selective hydrogenation. We have investigated the effects of H preadsorption on adsorption and reaction of 1,3-butadiene (H 2 CCHCHCH 2 , C 4 H 6 ) on Pt(111) surfaces by using temperature-programmed desorption (TPD)...
Adsorption and reaction of 1,3-butadiene (C 4 H 6 ) on two ordered Pt–Sn surface alloys precovered with hydrogen adatoms were studied with the use of temperature-programmed desorption (TPD) mass spectroscopy and Auger electron spectroscopy (AES). The two alloys investigated were the (2×2)Sn/Pt(111) and (3×3)R30°-Sn/Pt(111) surface alloys, with 25 and 33% Sn alloyed in the surface layer,...
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