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Study by infrared spectroscopy and thermogravimetry of the effect of temperature on nickel-aluminum hydrotalcites ; Estudio a través de espectroscopia infrarroja y termogravimetría del efecto de la temperatura en hidrotalcitas de níquel y aluminio

Authors: Ríos León, Ilich; Solano Polo, Cesar; Rodríguez Ruiz, Johana; Espinosa Fuentes, Eduardo Antonio; Meza Fuentes, Edgardo;

Study by infrared spectroscopy and thermogravimetry of the effect of temperature on nickel-aluminum hydrotalcites ; Estudio a través de espectroscopia infrarroja y termogravimetría del efecto de la temperatura en hidrotalcitas de níquel y aluminio

Abstract

The synthesis and use of materials as hydrotalcites have a high impact on development of new materials and technological advances, applied in areas such as catalysis and environmental chemistry. An aspect of vital importance is the temperature of collapse of the HTLc structure, because from this fact depend the properties of solids obtained. In this work was studied the thermal behavior of nickel-aluminum hydrotalcite, and determined the Ea associated with the collapse and formation of NiO. It was observed that the greater interaction among carbonate ions and OH groups occurs at 250 °C, temperature at which the collapse of the HTLc structure occurs. The solid N0,75A0,25 requires less energy to collapse, which is due to the greater distances between the positive sheets. The solid N0,66A0,33 need more energy for the formation of NiO, which is due to higher content of Al3+, disfavoring the growth of the initial particles of NiO. ; Las hidrotalcitas tienen un alto impacto en el desarrollo de nuevos materiales y en avances tecnológicos en áreas como catálisis y química ambiental. Un aspecto de vital importancia es la temperatura del colapso de la estructura HTLc, ya que de esta dependen las propiedades de los sólidos obtenidos. En este trabajo se estudió el comportamiento térmico de hidrotalcitas de níquel-aluminio y se determinó la Ea asociada al colapso y formación de NiO. Se observó que la mayor interacción entre iones carbonato y grupos OH ocurre a 250 °C, temperatura en la cual desaparece la estructura HTLc. El sólido N0,75A0,25 requirió menos energía para que ocurriese el colapso, debido a la mayor distancia entre las láminas. El material N0,66A0,33 necesito más energía para que ocurriese la formación del óxido de níquel, lo que se debe a que el mayor contenido de Al3+, desfavorece el crecimiento de las partículas iniciales de NiO. ; Ríos León, Ilich-b379bd1e-590d-432f-8871-c306b70f305f-0 ; Solano Polo, Cesar-d0458b0a-efec-4d52-aff0-1484db57e509-0 ; Rodríguez Ruiz, Johana-161f3ccc-96dc-4bad-9474-ab194a74536e-0 ...

Country
Colombia
Related Organizations
Keywords

Hidrotalcita, 570, Activation energy, Hydrotalcite, Energía de activación, Collapse of structure, Colapso de estructura, 530

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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
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Related to Research communities
Energy Research