A selective and stable Fe/TiO2 catalyst for selective hydrogenation of butadiene in alkene-rich stream
Zhao Wang1, Laura Santander de Soto1, Christophe Méthivier1
1Sorbonne Université, CNRS, Laboratoire de Réactivité de Surface, LRS, Paris F-75252, France. laurent.delannoy@sorbonne-universite.fr.
Abstract:
The replacement of precious metals by more abundant and therefore much less expensive metals remains a very important challenge in catalysis. A Fe/TiO2 catalyst prepared by deposition-precipitation with urea showed very high selectivity to alkenes (>99%), even at high conversion (>90%), in selective hydrogenation of butadiene in an excess of propene. Its activity is very stable at 175 °C whereas the catalyst deactivates at 50 °C, although it is also initially very active. The presence of metallic iron seems to be necessary to ensure these excellent performances.
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