TY - JOUR
T1 - Effect of 2,6-Bis-(1-hydroxy-1,1-diphenyl-methyl) Pyridine as Organic Additive in Sulfide NiMoP/γ-Al2O3 Catalyst for Hydrodesulfurization of Straight-Run Gas Oil
AU - Santolalla-Vargas, Carlos Eduardo
AU - Santes, Victor
AU - Meneses-Domínguez, Erick
AU - Escamilla, Vicente
AU - Hernández-Gordillo, Agileo
AU - Gómez, Elizabeth
AU - Sánchez-Minero, Felipe
AU - Escobar, José
AU - Díaz, Leonardo
AU - Goiz, Oscar
N1 - Funding Information:
The authors acknowledge financial support from Instituto Politécnico Nacional (SIP 20172151). All authors thank Luis Lartundo Rojas for the XPS and Luis Alberto Moreno Ruiz for Raman Spectroscopy.
Funding Information:
The authors acknowledge financial support from Instituto Politécnico Nacional authors thank Luis Lartundo Rojas for the XPS and Luis Alberto Moreno Ruiz for Author Contributions: V. Santes, C.E. Santolalla-Vargas conceived and designed the experiments; E. Meneses-Domínguez, A. Hernández-Gordillo, F. Sánchez-Minero, performed the experiments; E. Gómez, synthetized the organic additive; V. Escamilla, J. Escobar, Leonardo Díaz, Oscar Goiz, V. Santes, and C.E. Santolalla-Vargas discussed the results, V. Santes, C.E. Santolalla-Vargas wrote the paper. All authors discussed, edited, and approved the final version.
PY - 2017/8
Y1 - 2017/8
N2 - The effect of 2,6-bis-(1-hydroxy-1,1-diphenyl-methyl) pyridine (BDPHP) in the preparation of NiMoP/γ-Al2O3 catalysts have been investigated in the hydrodesulfurization (HDS) of straight-run gas oil. The γ-Al2O3 support was modified by surface impregnation of a solution of BDPHP to afford BDPHP/Ni molar ratios (0.5 and 1.0) in the final composition. The highest activity for NiMoP materials was found when the molar ratio of BDPHP/Ni was of 0.5. X-ray diffraction (XRD) results revealed that NiMoP (0.5) showed better dispersion of MoO3 than the NiMoP (1.0). Fourier transform infrared spectroscopy (FT-IR) results indicated that the organic additive interacts with the γ-Al2O3 surface and therefore discards the presence of Mo or Ni complexes. Raman spectroscopy suggested a high Raman ratio for the NiMoP (0.5) sample. The increment of the Mo=O species is related to a major availability of Mo species in the formation of MoS2. The temperature programmed reduction (TPR) results showed that the NiMoP (0.5) displayed moderate metal-support interaction. Likewise, X-ray photoelectron spectroscopy (XPS) exhibited higher sulfurization degree for NiMoP (0.5) compared with NiMoP (1.0). The increment of the MoO3 dispersion, the moderate metal-support interaction, the increase of sulfurization degree and the increment of Mo=O species provoked by the BDPHP incorporation resulted in a higher gas oil HDS activity.
AB - The effect of 2,6-bis-(1-hydroxy-1,1-diphenyl-methyl) pyridine (BDPHP) in the preparation of NiMoP/γ-Al2O3 catalysts have been investigated in the hydrodesulfurization (HDS) of straight-run gas oil. The γ-Al2O3 support was modified by surface impregnation of a solution of BDPHP to afford BDPHP/Ni molar ratios (0.5 and 1.0) in the final composition. The highest activity for NiMoP materials was found when the molar ratio of BDPHP/Ni was of 0.5. X-ray diffraction (XRD) results revealed that NiMoP (0.5) showed better dispersion of MoO3 than the NiMoP (1.0). Fourier transform infrared spectroscopy (FT-IR) results indicated that the organic additive interacts with the γ-Al2O3 surface and therefore discards the presence of Mo or Ni complexes. Raman spectroscopy suggested a high Raman ratio for the NiMoP (0.5) sample. The increment of the Mo=O species is related to a major availability of Mo species in the formation of MoS2. The temperature programmed reduction (TPR) results showed that the NiMoP (0.5) displayed moderate metal-support interaction. Likewise, X-ray photoelectron spectroscopy (XPS) exhibited higher sulfurization degree for NiMoP (0.5) compared with NiMoP (1.0). The increment of the MoO3 dispersion, the moderate metal-support interaction, the increase of sulfurization degree and the increment of Mo=O species provoked by the BDPHP incorporation resulted in a higher gas oil HDS activity.
KW - Hydrodesulfurization
KW - NiMoP
KW - Organic additive
KW - Sulfided catalysts
UR - http://www.scopus.com/inward/record.url?scp=85028338266&partnerID=8YFLogxK
U2 - 10.3390/molecules22081332
DO - 10.3390/molecules22081332
M3 - Artículo
C2 - 28809800
SN - 1420-3049
VL - 22
JO - Molecules
JF - Molecules
IS - 8
M1 - 1332
ER -