TY - JOUR
T1 - Monometallic Pd and Pt and bimetallic Pd-Pt/Al<2O3-TiO2 for the HDS of DBT
T2 - Effect of the Pd and Pt incorporation method
AU - Martínez Guerrero, Reynaldo
AU - Hernández-Gordillo, Agileo
AU - Santes, Víctor
AU - Vargas García, Jorge Roberto
AU - Escobar, José
AU - Díaz-García, Leonardo
AU - Díaz Barriga Arceo, Lucía
AU - Garibay Febles, Vicente
N1 - Publisher Copyright:
© 2014 Reynaldo Martínez Guerrero et al.
PY - 2014
Y1 - 2014
N2 - The effect of the preparation method of monometallic Pd and Pt and bimetallic Pd-Pt/Al2O3-TiO2 catalysts on the hydrodesulfurization (HDS) of dibenzothiophene (DBT) was investigated in this study. The synthesis was accomplished using three methods: (A) impregnation, (B) metal organic chemical vapor deposition (MOCVD), and (C) impregnation-MOCVD. The bimetallic Pd-Pt catalyst prepared by the impregnation-MOCVD method was most active for the HDS of DBT compared to those prepared by the single impregnation or MOCVD method due to the synergetic effect between both noble metals. The greater selectivity toward biphenyl indicated that this bimetallic Pd-Pt catalyst preferentially removes sulfur via the direct desulfurization mechanism. However, the bimetallic Pd-Pt catalyst prepared using the single MOCVD method did not produce any cyclohexylbenzene, which is most likely associated with the hydrogenation/dehydrogenation sites.
AB - The effect of the preparation method of monometallic Pd and Pt and bimetallic Pd-Pt/Al2O3-TiO2 catalysts on the hydrodesulfurization (HDS) of dibenzothiophene (DBT) was investigated in this study. The synthesis was accomplished using three methods: (A) impregnation, (B) metal organic chemical vapor deposition (MOCVD), and (C) impregnation-MOCVD. The bimetallic Pd-Pt catalyst prepared by the impregnation-MOCVD method was most active for the HDS of DBT compared to those prepared by the single impregnation or MOCVD method due to the synergetic effect between both noble metals. The greater selectivity toward biphenyl indicated that this bimetallic Pd-Pt catalyst preferentially removes sulfur via the direct desulfurization mechanism. However, the bimetallic Pd-Pt catalyst prepared using the single MOCVD method did not produce any cyclohexylbenzene, which is most likely associated with the hydrogenation/dehydrogenation sites.
UR - http://www.scopus.com/inward/record.url?scp=84915820955&partnerID=8YFLogxK
U2 - 10.1155/2014/679281
DO - 10.1155/2014/679281
M3 - Artículo
SN - 2090-9063
VL - 2014
JO - Journal of Chemistry
JF - Journal of Chemistry
M1 - 679281
ER -