Pt-Sn-Based SAPO-34 Supported Novel Catalyst for n-Butane Dehydrogenation

The performance of Pt-Sn/SAPO-34 novel catalyst was investigated for n-butane dehydrogenation. The catalyst was characterized by number of physiochemical techniques X-ray fluorescence (XRF), X-ray diffraction (XRD), ammonia temperature-programmed desorption (NH3-TPD), hydrogen temperature-programmed reduction (H-2-TPR), temperature-programmed oxidation (TPO), transmission electron microscopy (TEM.), and O-2-pulse coke measurement. The metallic contents, structure, acidity, and metallic dispersion were determined in order to explain catalyst superiority and functionality using SAPO-34 its support. Pt-Sn-based SAPO-34 supported catalyst was parametrically characterized in order to obtain Superior control of dehydrogenation reaction stereochemistry. Above 91% of total olefins with 80% butene was achieved over Pt-Sn/SAPO-34. The weight hourly space velocity 2.8 h(-1) and temperature 585 degrees C were found to be optimum for the higher dehydrogenation activity. The catalysts also showed very good hydrothermal stability in continuous reaction-regeneration cycles. The coke formation was mainly related to catalyst activity.