Hydrogen production from glycerol steam reforming over Co-based catalysts supported on La2O3, AlZnOx and AlLaOx

• Tipo: Artigo em Revista Científica Internacional
• Data: 2022

Autores

Macedo M.S. (Autor) Outra; Kraleva E. (Autor) Outra; Ehrich H. (Autor) Outra; Soria, M. A. (Autor) FEUP; Madeira L.M (Autor) FEUP

Revista

Título: International Journal of Hydrogen Energy

Vol. 47

ISSN: 0360-3199

Editora: Elsevier

Indexação

ISI Web of Knowledge - 0 Citações

Scopus - 0 Citações

Outras Informações

ID Authenticus: P-00X-E64

DOI: 10.1016/j.ijhydene.2022.07.236

Abstract (EN): A comparative study of 10 wt% Co-based catalysts supported on La2O3, AlZnOx and AlLaOx was performed for glycerol steam reforming (GSR). The catalysts physicochemical char-acterization was done through several techniques. All catalysts were screened in terms of catalytic activity and time-on-stream stability for GSR. The catalytic activity experiments aimed to assess the effect of temperature (400-700 degrees C) on the glycerol conversion and yield of gaseous products (H2, CO2, CO and CH4). Additionally, catalytic stability experiments were conducted at 625 degrees C to investigate deactivation of the catalysts, in which a drop in the activity was observed, especially for Co/La2O3. The glycerol conversion into gaseous products as a function of the time-on-stream was more affected for all catalysts in com-parison to total glycerol conversion, being this effect assigned to the increase in the for-mation of liquid products and to the formation of coke. CoAlLaOx was observed to be more carbon-resistant, followed by CoAlZnOx, through the measurement of the quantity of carbonaceous species formed during the GSR experiments. A NiAlLaOx catalyst was also prepared and assessed in terms of catalytic stability for GSR; a stable behavior was observed throughout all experiment in relation to glycerol conversion into gaseous prod-ucts and H2 yield.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 20