TY - JOUR
T1 - Aromatics reduction of pyrolysis gasoline (PyGas) over HY-supported transition metal catalysts
AU - Castaño, P.
AU - Pawelec, B.
AU - Fierro, J. L.G.
AU - Arandes, J. M.
AU - Bilbao, J.
N1 - Generated from Scopus record by KAUST IRTS on 2019-08-08
PY - 2006/11/23
Y1 - 2006/11/23
N2 - The hydrodearomatization of pyrolysis gasoline (PyGas) over bifunctional catalysts, based on noble metals (Pt, Pd, Ir, Ni) supported on a HY zeolite, has been studied in a fixed-bed reactor. The surface structures of the catalysts were determined by CO chemisorption, photoelectron spectroscopy (XPS), temperature-programmed reduction (TPR) and temperature-programmed desorption of H2 (H2-TPD). Catalyst acidity was assessed by ammonia desorption measured by differential scanning calorimetry (DSC-NH3) and Fourier transform infrared spectroscopy of adsorbed pyridine (FTIR-Py). The kinetic performance and product selectivity of the catalysts were discussed in terms of the data provided by surface characterization techniques. Kinetic interpretation was carried out by using individual step conversion, i.e. hydrogenation and ring-opening. The results under mild ring-opening (MRO) conditions indicate a strong dependence of the hydrogenation activity on the metal used. Operating under severe ring-opening (SRO) conditions, a linear dependency of conversion and n-alkane yield on total acidity of the catalyst was observed. © 2006 Elsevier B.V. All rights reserved.
AB - The hydrodearomatization of pyrolysis gasoline (PyGas) over bifunctional catalysts, based on noble metals (Pt, Pd, Ir, Ni) supported on a HY zeolite, has been studied in a fixed-bed reactor. The surface structures of the catalysts were determined by CO chemisorption, photoelectron spectroscopy (XPS), temperature-programmed reduction (TPR) and temperature-programmed desorption of H2 (H2-TPD). Catalyst acidity was assessed by ammonia desorption measured by differential scanning calorimetry (DSC-NH3) and Fourier transform infrared spectroscopy of adsorbed pyridine (FTIR-Py). The kinetic performance and product selectivity of the catalysts were discussed in terms of the data provided by surface characterization techniques. Kinetic interpretation was carried out by using individual step conversion, i.e. hydrogenation and ring-opening. The results under mild ring-opening (MRO) conditions indicate a strong dependence of the hydrogenation activity on the metal used. Operating under severe ring-opening (SRO) conditions, a linear dependency of conversion and n-alkane yield on total acidity of the catalyst was observed. © 2006 Elsevier B.V. All rights reserved.
UR - https://linkinghub.elsevier.com/retrieve/pii/S0926860X06006697
U2 - 10.1016/j.apcata.2006.09.009
DO - 10.1016/j.apcata.2006.09.009
M3 - Article
SN - 0926-860X
VL - 315
JO - Applied Catalysis A: General
JF - Applied Catalysis A: General
ER -