期刊
ENERGY & FUELS
卷 26, 期 3, 页码 1509-1519出版社
AMER CHEMICAL SOC
DOI: 10.1021/ef2019676
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资金
- Ministry of Science and Education of the Spanish Government [CTQ2006-03008/PPQ, CTQ2010-19623]
- University of the Basque Country [UFI 11/39]
- Basque Government [GIC07/24-IT-220-07]
The nature and composition of the coke deposited on Pt-Pd catalysts supported on acid carriers during the hydroprocessing (hydrocracking and hydrotreating) of light-cycle oil (LCO) has been studied. Five types of supports have been used: a commercial cracking catalyst, alumina, H beta zeolite, and two HY zeolites (with different acidities). The hydrocracking runs have been performed at 350 degrees C and 50 bar for up to 24 h. The characterization of the deactivating species on the catalyst used has been performed using temperature-programmed oxidation (TPO) coupled with mass spectrometry (MS) and Fourier transformed infrared (FTIR) spectroscopy, ultraviolet visible (UV-vis) spectroscopy, and comprehensive two-dimensional gas chromatography/mass spectrometry (GC X GC/MS) analysis of the soluble coke extracted from the deactivated catalyst. The complex composition of the coke has been simplified in three families, each related to a different composition and location. The composition of the coke (and the amount of each type of coke) strongly depends upon the catalyst properties, particularly the features of the support: acidity and micropore topology.
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