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Unformatted text preview: .................. 79 3.2.1. Preparation................................................................................................... 79 3.2.2. Structure and morphology............................................................................ 79 3.2.3. BET surface measurements......................................................................... 85 Contents IV 3.2.4. Reducibility................................................................................................... 86 3.2.4.1. Temperature programmed reduction............................................................ 86 3.2.4.2. Verifications of the existing reduction model................................................ 89 3.2.5. Ni dispersion................................................................................................. 93 3.2.6. Temperature programmed oxidation............................................................ 96 3.2.7. Influence of the calcination temperature on reducibility and Ni dispersion... 98 3.2.8. Basicity measurements.............................................................................. 101 3.2.8.1. Temperature programmed desorption of CO2............................................ 101 3.2.8.2. Determination of basicity by catalytic test reactions................................... 105 4. Results and discussion - catalytic partial oxidation of propane......... 109 4.1. Catalytic screening..................................................................................... 109 4.2. Catalytic tests of different configurations................................................... 116 4.2.1. Blank experiments...................................................................................... 116 4.2.2. Active catalyst (reduced Ni10C900)........................................................... 118 4.3. Influence of the O2/C3H8 ratio..................................................................... 124 4.4. Influence of the space velocity..........
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