TY - GEN
T1 - Hydrogenation of 1,3-butadiene on Sn/Pt(111) surface alloys
AU - Koel, Bruce E.
PY - 2008
Y1 - 2008
N2 - Butadiene is an impurity in C4 alkene streams produced by steam cracking, and it is desirable to selectively hydrogenate this butadiene to butene. Unfortunately, much butane is usually produced over platinum catalysts used for this purpose. Supported Pt-Sn bimetallic catalysts have been reported to be effective in selectively hydrogenating diolefin impurities. The presence of Sn in bimetallic Pt catalysts has also been reported to prevent alkene hydrogenation, which is important for selectively removing diene impurities. We discuss our investigations of butadiene hydrogenation on well-defined model catalysts by coadsorption of hydrogen and butadiene under UHV conditions on Pt(111) and two ordered Sn/Pt(111) surface alloys. This chemistry was characterized by using temperature programmed desorption (TPD). In particular, we address the influence of alloyed Sn on the reaction barrier to butadiene hydrogenation and the effect of surface Sn concentration on hydrogenation activity and selectivity.
AB - Butadiene is an impurity in C4 alkene streams produced by steam cracking, and it is desirable to selectively hydrogenate this butadiene to butene. Unfortunately, much butane is usually produced over platinum catalysts used for this purpose. Supported Pt-Sn bimetallic catalysts have been reported to be effective in selectively hydrogenating diolefin impurities. The presence of Sn in bimetallic Pt catalysts has also been reported to prevent alkene hydrogenation, which is important for selectively removing diene impurities. We discuss our investigations of butadiene hydrogenation on well-defined model catalysts by coadsorption of hydrogen and butadiene under UHV conditions on Pt(111) and two ordered Sn/Pt(111) surface alloys. This chemistry was characterized by using temperature programmed desorption (TPD). In particular, we address the influence of alloyed Sn on the reaction barrier to butadiene hydrogenation and the effect of surface Sn concentration on hydrogenation activity and selectivity.
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M3 - Conference contribution
AN - SCOPUS:77955646552
SN - 9780841269859
T3 - ACS National Meeting Book of Abstracts
BT - American Chemical Society - 235th National Meeting, Abstracts of Scientific Papers
T2 - 235th National Meeting of the American Chemical Society, ACS 2008
Y2 - 6 April 2008 through 10 April 2008
ER -