Producción de hidrógeno a través de la gasificación de glucosa usando catalizadores de 5%Ni con 2% de La, Ce y Mg y deducción de una ecuación de velocidad de reacción intrínseca
Currently, the problem of producing energy in a sustainable and environmentally friendly way is a challenge, in such a way that systems based on renewable energies must take greater relevance. Biomass is a material consisting of carbon, hydrogen, oxygen, nitrogen and minerals, which is considered a...
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| Tipo de recurso: | tesis de maestría |
| Estado: | Versión publicada |
| Fecha de publicación: | 2019 |
| País: | México |
| Institución: | Universidad Autónoma de Zacatecas |
| Repositorio: | Repositorio Institucional Caxcán |
| Idioma: | español |
| OAI Identifier: | oai:http://ricaxcan.uaz.edu.mx:20.500.11845/2306 |
| Acceso en línea: | http://ricaxcan.uaz.edu.mx/jspui/handle/20.500.11845/2306 |
| Access Level: | acceso abierto |
| Palabra clave: | BIOLOGIA Y QUIMICA [2] Gasificación Biomasa Glucosa Co-impregnación Hidrógeno |
| Sumario: | Currently, the problem of producing energy in a sustainable and environmentally friendly way is a challenge, in such a way that systems based on renewable energies must take greater relevance. Biomass is a material consisting of carbon, hydrogen, oxygen, nitrogen and minerals, which is considered a renewable resource due to its low sulfur content and emissions. The biomass gasification generates waste carbon and tars, so we have to find a way to use a catalyst that minimizes the production of tars and produce more hydrogen. The catalysts synthesized and tested were 5%Ni/ꝩ-Al2O3, 5%Ni-2%Ce/ꝩ-Al2O3, 5%Ni-2%La/ꝩ-Al2O3 y 5%Ni-2%Mg/ꝩ-Al2O3 all of them prepared by the incipient moisture co-impregnation technique, were characterized using Brunauer, Emmett and Teller (BET), particle size distribution (PSD), X-ray diffraction (XRD), programmed temperature reduction (TPR) , Programmed temperature desorption (TPD), atomic adsorption (AA), scanning electron microscopy (SEM), transition electron microscopy (TEM) and infrared spectroscopy with Fourier transform (FTIR). The temperature was varied (550, 600 and 650°C) and the reaction time (5, 10, 20, 30 and 40 seconds) for all the catalysts, in addition thermal experiments were also done to see if there is an improvement when using catalysts. The gasification products were analyzed in a gas chromatograph coupled to a thermal conductivity detector and the H2, CH4, CO and CO2 compounds were determined quantitatively. Finally it was found that the best catalyst was 5%Ni-2%Ce/ꝩ-Al2O3 at 650 °C, 20s with a vapor / glucose ratio of one and catalyst / biomass of two, because there was an increase of the amount of H2 (0.61) and CO2 (0.21), and a decrease of CO (0.09) and CH4 (0.09). This indicates that water gas shift reactions ( + 2↔2 + 2), methane vapor reformation (4 + 2↔32 + ) and dry methane reforming (4 + 2↔22 + 2). |
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