Synthesis of MoS2 nanorods and their catalytic test in the HDS of dibenzothiophene
Partially sulfided nanostructures were synthesized by direct sulfurization of α-MoO3 nanorods using a mixture of H2S/H2, 15 vol%, at several temperatures (400, 500, 600, 700, and 800 °C). These materials were tested as catalysts in the hydrodesulfurization (HDS) of dibenzothiophene (DBT) and charact...
| Autor: | |
|---|---|
| Formato: | artículo |
| Estado: | Versión aceptada para publicación |
| Fecha de publicación: | 2006 |
| País: | México |
| Recursos: | Centro de Investigación en Materiales Avanzados |
| Repositorio: | Fuente de Objetos Científicos Open Access del CIMAV |
| Idioma: | inglés |
| OAI Identifier: | oai:cimav.repositorioinstitucional.mx:1004/423 |
| Acesso em linha: | http://cimav.repositorioinstitucional.mx/jspui/handle/1004/423 |
| Access Level: | acceso abierto |
| Palavra-chave: | info:eu-repo/classification/cti/2 info:eu-repo/classification/cti/23 |
| Resumo: | Partially sulfided nanostructures were synthesized by direct sulfurization of α-MoO3 nanorods using a mixture of H2S/H2, 15 vol%, at several temperatures (400, 500, 600, 700, and 800 °C). These materials were tested as catalysts in the hydrodesulfurization (HDS) of dibenzothiophene (DBT) and characterized by specific surface areas using the expression developed by Brunauer, Emmett, and Teller (BET equation), x-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The TEM images show a gradual evolution from a smooth surface to a rough material, presenting some type of holes all over the particles, but keeping their rod-like structure throughout sulfidation. The results of evaluating the catalysts in the HDS of DBT showed that the best temperature for sulfidation is 500 °C. In all samples, a higher selectivity for hydrogenation over sulfur removal was observed. |
|---|