Synthesis and characterization of simultaneously-impregnated Co-Mo-P on Al-MCM41. Effect of support precursors
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| Format: | Artículo científico |
| Language: | en |
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Sociedad Química de México
2004
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| author | Agileo Hernández |
| author_facet | Agileo Hernández |
| contents | Synthesis and characterization of simultaneously-impregnated Co-Mo-P on Al-MCM41. Effect of support precursors Agileo Hernández José G. Pacheco María C. Barrera José Escobar José A. de los Reyes Multidisciplinaria (Ciencias Naturales y Exactas) Al MCM41 CoMo catalyst hydrothermal synthesis dibenzothiophene hydrodesulfurization Al-MCM-41 (SiO2/Al2O3=200) materials from various Aland Si sources were synthesized. The calcined solids (823 K) werecharacterized by N2 physisorption, X-ray diffraction and surface aciditymeasurements. The sample from tetraethyl orthosilicate-Al(SO4)3had decreased surface area (836 m2/g) and pore volume (0.88 cm3/g),meanwhile the lowest amount of Al3+ incorporated into the MCM41walls was registered when SiO2-boehmite was used as precursor. Co,Mo and P (~3, ~12.5 and ~1.6 weight %, respectively) were simultaneouslyimpregnated on Al-MCM41. Surface acidity was notablyincreased after impregnation, probably by the contribution of PO43-groups deposited. After sulfiding (H2S/H2, 673 K), the oxidic impregnatedprecursor having both the best texture and the highest proportionof octahedral Mo6+ (the one supported on Al-MCM41 fromSiO2-Al(SO4)3) was ~30% more active in dibenzothiophenehydrodesulfurization (HDS) than an Al2O3-supported commercialformulation of similar Co-Mo-P loading. For the Al-MCM41-supportedcatalyst, the high HDS activity and predominant selectivity tobiphenyl suggested good Mo promotion by Co. 2004 artículo científico 1870-249X https://www.redalyc.org/articulo.oa?id=47548410 en http://www.redalyc.org/revista.oa?id=475 Journal of the Mexican Chemical Society application/pdf Sociedad Química de México Journal of the Mexican Chemical Society (México) Num.4 Vol.48 |
| format | Artículo científico |
| id | redalyc_47548410 |
| institution | Redalyc |
| language | en |
| publishDate | 2004 |
| publisher | Sociedad Química de México |
| spellingShingle | Synthesis and characterization of simultaneously-impregnated Co-Mo-P on Al-MCM41. Effect of support precursors Agileo Hernández Multidisciplinaria (Ciencias Naturales y Exactas) Al MCM41 CoMo catalyst hydrothermal synthesis dibenzothiophene hydrodesulfurization Synthesis and characterization of simultaneously-impregnated Co-Mo-P on Al-MCM41. Effect of support precursors Agileo Hernández José G. Pacheco María C. Barrera José Escobar José A. de los Reyes Multidisciplinaria (Ciencias Naturales y Exactas) Al MCM41 CoMo catalyst hydrothermal synthesis dibenzothiophene hydrodesulfurization Al-MCM-41 (SiO2/Al2O3=200) materials from various Aland Si sources were synthesized. The calcined solids (823 K) werecharacterized by N2 physisorption, X-ray diffraction and surface aciditymeasurements. The sample from tetraethyl orthosilicate-Al(SO4)3had decreased surface area (836 m2/g) and pore volume (0.88 cm3/g),meanwhile the lowest amount of Al3+ incorporated into the MCM41walls was registered when SiO2-boehmite was used as precursor. Co,Mo and P (~3, ~12.5 and ~1.6 weight %, respectively) were simultaneouslyimpregnated on Al-MCM41. Surface acidity was notablyincreased after impregnation, probably by the contribution of PO43-groups deposited. After sulfiding (H2S/H2, 673 K), the oxidic impregnatedprecursor having both the best texture and the highest proportionof octahedral Mo6+ (the one supported on Al-MCM41 fromSiO2-Al(SO4)3) was ~30% more active in dibenzothiophenehydrodesulfurization (HDS) than an Al2O3-supported commercialformulation of similar Co-Mo-P loading. For the Al-MCM41-supportedcatalyst, the high HDS activity and predominant selectivity tobiphenyl suggested good Mo promotion by Co. 2004 artículo científico 1870-249X https://www.redalyc.org/articulo.oa?id=47548410 en http://www.redalyc.org/revista.oa?id=475 Journal of the Mexican Chemical Society application/pdf Sociedad Química de México Journal of the Mexican Chemical Society (México) Num.4 Vol.48 |
| title | Synthesis and characterization of simultaneously-impregnated Co-Mo-P on Al-MCM41. Effect of support precursors |
| topic | Multidisciplinaria (Ciencias Naturales y Exactas) Al MCM41 CoMo catalyst hydrothermal synthesis dibenzothiophene hydrodesulfurization |
| url | https://www.redalyc.org/articulo.oa?id=47548410 |