Monometallic Pd and Pt and Bimetallic Pd-Pt/Al2O3-TiO2 for the HDS of DBT: Effect of the Pd and Pt Incorporation Method
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...
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| Format: | Article |
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Wiley
2014-01-01
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| Series: | Journal of Chemistry |
| Online Access: | http://dx.doi.org/10.1155/2014/679281 |
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| author | Reynaldo Martínez Guerrero Agileo Hernández-Gordillo Víctor Santes Jorge Roberto Vargas García José Escobar Leonardo Díaz-García Lucía Díaz Barriga Arceo Vicente Garibay Febles |
| author_facet | Reynaldo Martínez Guerrero Agileo Hernández-Gordillo Víctor Santes Jorge Roberto Vargas García José Escobar Leonardo Díaz-García Lucía Díaz Barriga Arceo Vicente Garibay Febles |
| author_sort | Reynaldo Martínez Guerrero |
| collection | DOAJ |
| description | 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. |
| format | Article |
| id | doaj-art-14494645d5984b689afbbbc7eb9d6185 |
| institution | Kabale University |
| issn | 2090-9063 2090-9071 |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Chemistry |
| spelling | doaj-art-14494645d5984b689afbbbc7eb9d61852025-02-03T06:10:54ZengWileyJournal of Chemistry2090-90632090-90712014-01-01201410.1155/2014/679281679281Monometallic Pd and Pt and Bimetallic Pd-Pt/Al2O3-TiO2 for the HDS of DBT: Effect of the Pd and Pt Incorporation MethodReynaldo Martínez Guerrero0Agileo Hernández-Gordillo1Víctor Santes2Jorge Roberto Vargas García3José Escobar4Leonardo Díaz-García5Lucía Díaz Barriga Arceo6Vicente Garibay Febles7Departamento de Ingeniería Metalúrgica, ESIQIE-Instituto Politécnico Nacional, 07300 México, DF, MexicoDepartamento de Biociencias e Ingeniería, CIIEMAD-Instituto Politécnico Nacional, 07340 México, DF, MexicoDepartamento de Biociencias e Ingeniería, CIIEMAD-Instituto Politécnico Nacional, 07340 México, DF, MexicoDepartamento de Ingeniería Metalúrgica, ESIQIE-Instituto Politécnico Nacional, 07300 México, DF, MexicoInstituto Mexicano del Petróleo, Eje Central 152, 07730 México, DF, MexicoInstituto Mexicano del Petróleo, Eje Central 152, 07730 México, DF, MexicoDepartamento de Ingeniería Metalúrgica, ESIQIE-Instituto Politécnico Nacional, 07300 México, DF, MexicoInstituto Mexicano del Petróleo, Eje Central 152, 07730 México, DF, MexicoThe 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.http://dx.doi.org/10.1155/2014/679281 |
| spellingShingle | Reynaldo Martínez Guerrero Agileo Hernández-Gordillo Víctor Santes Jorge Roberto Vargas García José Escobar Leonardo Díaz-García Lucía Díaz Barriga Arceo Vicente Garibay Febles Monometallic Pd and Pt and Bimetallic Pd-Pt/Al2O3-TiO2 for the HDS of DBT: Effect of the Pd and Pt Incorporation Method Journal of Chemistry |
| title | Monometallic Pd and Pt and Bimetallic Pd-Pt/Al2O3-TiO2 for the HDS of DBT: Effect of the Pd and Pt Incorporation Method |
| title_full | Monometallic Pd and Pt and Bimetallic Pd-Pt/Al2O3-TiO2 for the HDS of DBT: Effect of the Pd and Pt Incorporation Method |
| title_fullStr | Monometallic Pd and Pt and Bimetallic Pd-Pt/Al2O3-TiO2 for the HDS of DBT: Effect of the Pd and Pt Incorporation Method |
| title_full_unstemmed | Monometallic Pd and Pt and Bimetallic Pd-Pt/Al2O3-TiO2 for the HDS of DBT: Effect of the Pd and Pt Incorporation Method |
| title_short | Monometallic Pd and Pt and Bimetallic Pd-Pt/Al2O3-TiO2 for the HDS of DBT: Effect of the Pd and Pt Incorporation Method |
| title_sort | monometallic pd and pt and bimetallic pd pt al2o3 tio2 for the hds of dbt effect of the pd and pt incorporation method |
| url | http://dx.doi.org/10.1155/2014/679281 |
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