Preparation and characterization of activated CMK-1with Zn and Ni species applied in hydrogen storage

JULIANA M. JUÁREZ; MARCOS B. GÓMEZ COSTA; OSCAR A. ANUNZIATA

INTERNATIONAL JOURNAL OF ENERGY RESEARCH

JOHN WILEY & SONS LTD

Lugar: LOndres; Año: 2015 vol. 39 p. 941 - 953

0363-907X

The aim of this work is to prepare CMK-1 modified with Zn and Ni in order to improve its capacity in hydrogen storage. The approach that we have followed includes synthesis of nanostructures with the experimental study of its adsorption capacity and storage properties. We have shown that CMK-1 ordered porous carbon modified with metals is a promising material for hydrogen storage. The incorporation of metals was performed by wetness impregnation. The samples were characterized by X-ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscope, transmission electron microscopy, X-ray photoelectron spectroscopy, and Brunauer?Emmett?Teller methods. The CMK-1 modified with Zn showed the highest H2 uptake at 77K and at low and high pressure (1.5 and 4.4 wt.% at 1 and 10 bar, respectively). The introduction of Ni into CMK-1 does not increase hydrogen storage capacity at low pressure. However, at a higher pressure (10 bars), Ni-CMK-1 displays improved results in hydrogen uptake compared with those of CMK-1 pristine, 2.4 and 2.1 wt.%, respectively.