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Biogas Dry Reforming Over Ni–Mg–La–Al Catalysts: Influence of La/Mg Ratio

Calgaro, Camila O. ; Lima, Dirléia dos S. ; Tonietto, Rafaela ; Perez-Lopez, Oscar W.

Catalysis letters, 2021, Vol.151 (1), p.267-280 [Periódico revisado por pares]

New York: Springer US

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Título:
Biogas Dry Reforming Over Ni–Mg–La–Al Catalysts: Influence of La/Mg Ratio
Autor: Calgaro, Camila O. ; Lima, Dirléia dos S. ; Tonietto, Rafaela ; Perez-Lopez, Oscar W.
Assuntos: Aluminum ; Ammonia ; Analysis ; Biogas ; Biomass energy ; Carbon dioxide ; Catalysis ; Catalysts ; Catalytic converters ; Chemistry ; Chemistry and Materials Science ; Conversion ; Crystallites ; Decomposition reactions ; Fixed beds ; Industrial Chemistry/Chemical Engineering ; Magnesium ; Methane ; Nickel ; Organometallic Chemistry ; Physical Chemistry ; Reforming ; Stability analysis
É parte de: Catalysis letters, 2021, Vol.151 (1), p.267-280
Descrição: La/Mg ratio was evaluated in Ni–Mg–La–Al catalysts for the biogas dry reforming. The reactions were carried out in a fixed bed tubular reactor using synthetic biogas (70% CH 4 and 30% CO 2 ). The catalyst characterization showed that the increase of La/Mg ratio decreased the specific surface area of the catalyst and the average crystallite size of Ni 0 , but increased the acid strength of sites identified by NH 3 -TPD analysis. These properties contributed to improving the activity and catalytic stability for CH 4 conversion at 700 °C. The Mg presence increased the strength of basic sites of the catalysts and plays an important role in CO 2 conversion. The catalyst with La/Mg = 4 presented the best activity and stability for the reaction at 700 °C, due to the greater resistance to sintering associated with de small size of Ni 0 , and a proper combination of acid and basic sites. H 2 /CO ratios higher than 1 were obtained due to the contribution of the CH 4 decomposition reaction. Graphic Abstract
Editor: New York: Springer US
Idioma: Inglês

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Biogas Dry Reforming Over Ni–Mg–La–Al Catalysts: Influence of La/Mg Ratio

Calgaro, Camila O. ; Lima, Dirléia dos S. ; Tonietto, Rafaela ; Perez-Lopez, Oscar W.

New York: Springer US

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