Hydrogenation of 1,3-Butadiene on Platinum Surfaces of DifferentStructures
1,3-butadiene hydrogenation is studied on platinum foil and Pt(111), Pt(100), Pt(755) single-crystal surfaces at 300-375 K. The results are compared with the data of alkene hydrogenation reactions. Similar to the hydrogenation kinetics of butenes, 1,3-butadiene hydrogenation exhibits near zeroth-order dependence on hydrocarbon and near first-order dependence on hydrogen pressure. With the same hydrocarbon (3.5-70 Torr) and hydrogen (14-140 Torr) pressure, the rate of 1,3-butadiene hydrogenation is one order of magnitude lower than for the rates for n-butenes. The hydrogenation products include 1-butene, trans- and cis-2-butene, and n-butane. The reaction selectivity is independent of reactant mixture and platinum surface structure, but changes slightly as a function of reaction temperature. The butene product distribution is determined by surface reaction kinetics. While 1-butene is thermodynamically less stable than trans- and cis-2-butene, it is the major butene product in 1,3-butadiene hydrogenation.
- Research Organization:
- Ernest Orlando Lawrence Berkeley NationalLaboratory, Berkeley, CA (US)
- Sponsoring Organization:
- USDOE Director, Office of Energy Research
- DOE Contract Number:
- AC02-05CH11231
- OSTI ID:
- 899774
- Report Number(s):
- LBNL--40655
- Journal Information:
- Catalysis Letters, Journal Name: Catalysis Letters Journal Issue: 1-2 Vol. 46; ISSN CALEER; ISSN 1011-372X
- Country of Publication:
- United States
- Language:
- English
Similar Records
1,3-Butadiene hydrogenation on single crystals of platinum. I. Mechanism and carbon deactivation of Pt(110)
Hydrogenation of alkadienes. 9. 1,3-butadiene hydrogenation catalyzed by rhenium and by sulfur-contaminated rhenium