TY - GEN
T1 - Kinetics of the propene epoxidation and water formation over gold-titania catalysts
AU - Nijhuis, Tjeerd Alexander
AU - Weckhuysen, Bert M.
PY - 2007
Y1 - 2007
N2 - Gold-titania catalysts can very selectively epoxidize propene at mild conditions using molecular oxygen in the presence of hydrogen as sacrificial reductant. The low hydrogen efficiency of these catalysts is the most important problem that needs to be solved before this catalyst system can be applied commercially. The hydrogen efficiency is dominated by the water produced by the direct hydrogen oxidation.. This paper presents a kinetic study into the hydrogen oxidation and links this to the epoxidation kinetics. Both the behavior of gold on titania, the 'standard' catalysts of choice for the propene hydro-epoxidation, and the behavior of gold on silica are investigated. Gold on silica does not have any significant propene epoxidation activity and is studied to investigate the possible role of the support and as a way to de-couple the epoxidation from the water formation. For the hydro-oxidation of propene, it is commonly known that the support plays a crucial role in the reaction.
AB - Gold-titania catalysts can very selectively epoxidize propene at mild conditions using molecular oxygen in the presence of hydrogen as sacrificial reductant. The low hydrogen efficiency of these catalysts is the most important problem that needs to be solved before this catalyst system can be applied commercially. The hydrogen efficiency is dominated by the water produced by the direct hydrogen oxidation.. This paper presents a kinetic study into the hydrogen oxidation and links this to the epoxidation kinetics. Both the behavior of gold on titania, the 'standard' catalysts of choice for the propene hydro-epoxidation, and the behavior of gold on silica are investigated. Gold on silica does not have any significant propene epoxidation activity and is studied to investigate the possible role of the support and as a way to de-couple the epoxidation from the water formation. For the hydro-oxidation of propene, it is commonly known that the support plays a crucial role in the reaction.
UR - http://www.scopus.com/inward/record.url?scp=37349029041&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:37349029041
SN - 0841269556
SN - 9780841269552
T3 - ACS National Meeting Book of Abstracts
BT - 234th ACS National Meeting, Abstracts of Scientific Papers
T2 - 234th ACS National Meeting
Y2 - 19 August 2007 through 23 August 2007
ER -