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Catalysis of Organic..

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106 Propylene Partial Oxidation0.0237413688T (°C)2001750.023737340430932951291516621635T (°C)200175IR Intensity (A.U.)150125100IR Intensity (A.U.)CO 2 (g)15012550100503800 3650 3500Wavenumber (cm -1 )4000360032002800 2400 2000Wavenumber (cm -1 )Figure 6. In situ IR spectroscopy <strong>of</strong> TPR <strong>of</strong> propylene partial oxidation overAu/TiO x -SiO 2 .160012008005m/e = 41 (C 3 H 6 )Flow Rate (cc/min)4321m/e = 32 (O 2 )m/e = 2 (H 2 )m/e = 29 (propionaldehyde)m/e = 43 (acetone)m/e = 44 (CO 2 )040 80 120 160 200Temperature (°C)Figure 7. MS analysis during TPR <strong>of</strong> propylene partial oxidation over Au/TiO x -SiO 2 (catalyst weight = 0.085 g).

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