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The isomerization of n-heptane over hydrogenated (H-) and Pt-loaded (Pt/H-) beta zeolites was observed directly by in situ infrared spectroscopy for investigation of the reaction mechanism and coking process. Carbonaceous species produced in the reaction are identified as either highly branched polyolefins (1485 cm −1 band) or coke (1600 cm −1 ). The former can be readily removed by...
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