fig1
Figure 1. The coke mechanism of PDH on various locations. FTIR differential spectra following propane pulse adsorption for (A) Al2O3, (B) Sn-Al2O3, (C) Pt/Al2O3 and (D) Pt/Sn-Al2O3. The pulse experiments were carried out at 600 °C by pulses of pure propane (pulse volume = 0.50 cm3 STP) to the in situ cell at Ar (30 mL/min) atmosphere. The yellow dashed line represents the adsorption peak, while the white dashed line represents the inverted peak caused by the occupation of adsorption sites. PDH: Propane dehydrogenation; FTIR: Fourier transform infrared spectroscopy; STP: standard temperature and pressure.
