Continuous Semihydrogenation of a Propargylic Alcohol over Amorphous Pd81Si19 in Dense Carbon Dioxide: Effect of Modifiers |
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| Authors: | Reto Tschan Markus M Schubert Alfons Baiker Werner Bonrath Hans Lansink-Rotgerink |
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| Affiliation: | (1) Laboratory of Technical Chemistry, Swiss Federal Institute of Technology, ETH Zentrum, CH-8092 Zurich, Switzerland;(2) Vitamins and Fine Chemicals Division, Chemical Process Technology, F. Hoffmann-La Roche Ltd., CH-4070 Basel, Switzerland;(3) Degussa AG, Rodenbacher Chaussee 4, 63403 Hanau, Germany |
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| Abstract: | A novel catalyst, Ni/Ce–ZrO2, exhibits very high catalytic activity and stability even in the stoichiometric steam reforming of methane (H2O/CH4 = 1). Furthermore, when it was employed in oxy-steam reforming, it gave enhanced CH4 conversion (99.1%) at 750 °C and the activity was maintained for 100 h. The high catalyst stability is mainly ascribed to the synergistic effect of the Ce modifier resulting from high capacity to store oxygen and high ability to produce mobile oxygen. |
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| Keywords: | Ni/Ce– ZrO2 methane steam reforming oxy-steam reforming Ce modifier |
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