Hydrogenation of 1,3-butadiene on Sn/Pt(111) surface alloys

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

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.

Original languageEnglish (US)
Title of host publicationAmerican Chemical Society - 235th National Meeting, Abstracts of Scientific Papers
StatePublished - Dec 1 2008
Externally publishedYes
Event235th National Meeting of the American Chemical Society, ACS 2008 - New Orleans, LA, United States
Duration: Apr 6 2008Apr 10 2008

Publication series

NameACS National Meeting Book of Abstracts
ISSN (Print)0065-7727

Other

Other235th National Meeting of the American Chemical Society, ACS 2008
CountryUnited States
CityNew Orleans, LA
Period4/6/084/10/08

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)

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