Hydrogen adsorption onto MCM-48 carbon replica modified with metals

J. M. JUÁREZ; M. B. GÓMEZ COSTA; J. CUSSA; O.A. ANUNZIATA

Moscú

Conferencia; 17th International Zeolite Conference (17th IZC); 2013

International Zeolite Conference (IZC)

CMK-1 ordered carbon was synthesized via a two step impregnation of the mesopores of MCM-48, with a solution of sucrose using an incipient wetness method. Ni-CMK-1, Zn-CMK-1 and Ir-CMK-1 were prepared by wet impregnation using NiCl2.6H2O, Zn(NO3)2.6H2O and Iridium Acetylacetonate as source of Ni, Zn and Ir respectively. In order to increase the amount of hydrogen adsorbed the Zn-CMK-1 sample was treated under H2 flow, at 1173 K. Porous carbon CMK-1 and the samples modified with metals were characterized by XRD, FTIR, XPS, BET and SEM. Measurements of hydrogen adsorption at cryogenic temperatures and low pressures were performed. Zn-CMK-1 and Ni-CMK-1 had a lower hydrogen storage capacity than the nanostructured CMK-1. While the Zn-CMK-1 sample that was thermally treated under hydrogen flow showed a greater H2 than the sample CMK-1.