Título

THEORETICAL ANALYSIS OF CATALYST DEACTIVATION DUE TO POISONING BY H2S AND SOLID CARBON DEPOSITION: EFFECT OF ADDITION OF RARE-EARTH (La2O3 and CeO2)

THEORETICAL ANALYSIS OF CATALYST DEACTIVATION DUE TO POISONING BY H2S AND SOLID CARBON DEPOSITION: EFFECT OF ADDITION OF RARE-EARTH (La2O3 and CeO2)

Autoria

Silva, Aline Lima da; Heck, Nestor Cezar

DOI

10.5151/2594-5327-23008

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Resumo

The aim of this research is to identify, by means of a thermodynamic analysis, the beneficial effects of La2O3 and CeO2 addition to catalysts used in biogas reforming. Operating conditions, under which deactivation of Ni catalyst by H2S poisoning and/or solid carbon deposition can be reduced or prevented, are determined. In this work, the stability of different phases of solid carbon – graphite and multi-walled carbon nanotubes – under biogas stream reforming atmosphere is analyzed. The results from the present study contribute to the development of multifunctional catalysts.

 

The aim of this research is to identify, by means of a thermodynamic analysis, the beneficial effects of La2O3 and CeO2 addition to catalysts used in biogas reforming. Operating conditions, under which deactivation of Ni catalyst by H2S poisoning and/or solid carbon deposition can be reduced or prevented, are determined. In this work, the stability of different phases of solid carbon – graphite and multi-walled carbon nanotubes – under biogas stream reforming atmosphere is analyzed. The results from the present study contribute to the development of multifunctional catalysts.

Palavras-chave

H2S; Biogas; Catalyst; Thermodynamic simulation.

H2S; Biogas; Catalyst; Thermodynamic simulation.