Artículos de revistas
Synthesis and multi-technique characterization of nickel loaded MCM-41 as potential hydrogen-storage materials
Fecha
2014-03Registro en:
Carraro, Paola María; Elías, Verónica Rita; Garcia Blanco, Andres Alberto; Sapag, Manuel Karim; Moreno, Mario Sergio Jesus; et al.; Synthesis and multi-technique characterization of nickel loaded MCM-41 as potential hydrogen-storage materials; Elsevier Science; Microporous And Mesoporous Materials; 191; 3-2014; 103-111
1387-1811
Autor
Carraro, Paola María
Elías, Verónica Rita
Garcia Blanco, Andres Alberto
Sapag, Manuel Karim
Moreno, Mario Sergio Jesus
Oliva, Marcos Iván
Eimer, Griselda Alejandra
Resumen
Ni/MCM-41 samples have been successfully prepared by wet impregnation method with different degrees of metal loading. Various techniques including X-ray diffraction, N2 adsorption?desorption, transmission electron microscopy, inductively coupled plasma atomic emission spectroscopy, electron microprobe analysis, UV?Vis diffuse reflectance spectra, infrared analysis, adsorption of pyridine coupled to infrared spectroscopy and hydrogen adsorption at 77 K at high and low pressure conditions were employed for the materials characterization. The Ni loading degree had a marked influence on the structural, chemical, acid and hydrogen storage properties of the samples. Thus, a low Ni loading favors the presence of highly dispersed Ni species responsible of the Lewis acidity. These species would promote hydrogen-favorable sites leading to a positive effect on the hydrogen storage capacity.