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Adsorption

Erschienen in:

03.05.2019

Effect of nickel loading on hydrogen adsorption capacity of different mesoporous supports

verfasst von: P. M. Carraro, F. A. Soria, E. G. Vaschetto, K. Sapag, M. I. Oliva, G. A. Eimer

Erschienen in: Adsorption | Ausgabe 7/2019

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Abstract

Pure siliceous and aluminosilicate mesoporous molecular sieves of MCM-41 type have been used as support for nickel incorporation (2.5 wt%) by wet impregnation method. The hydrogen adsorption capacities at 77 K of these materials have been studied. Various techniques such as X-ray diffraction, N₂ adsorption–desorption, X-ray photoelectron spectroscopy, Temperature-Programmed Reduction, UV–Vis diffuse reflectance spectroscopy and adsorption of pyridine coupled to infrared spectroscopy were employed to characterize the materials. In addition, Density Functional Theory calculations were used in order to interpret the results of hydrogen adsorption. The results obtained show that isolated metallic species are capable to promote hydrogen favorable sites. Isolated mononuclear Ni²⁺ species on the surface strengthen the interaction with the H₂, enhancing the hydrogen adsorption capacity.

Vorheriger Artikel Deacidification of vegetable oil by extraction with solvent recovery

Nächster Artikel Monte Carlo simulations of n-butane and n-octane adsorbed onto graphite and a molecular model of activated carbon

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Titel: Effect of nickel loading on hydrogen adsorption capacity of different mesoporous supports
verfasst von: P. M. Carraro
F. A. Soria
E. G. Vaschetto
K. Sapag
M. I. Oliva
G. A. Eimer
Publikationsdatum: 03.05.2019
Verlag: Springer US
Erschienen in: Adsorption / Ausgabe 7/2019
Print ISSN: 0929-5607
Elektronische ISSN: 1572-8757
DOI: https://doi.org/10.1007/s10450-019-00103-8

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