Impregnation of Nickel on Mesoporous ZSM-5 Templated Carbons as Candidate Material for Hydrogen Storage
ABSTRACT: A series of carbon
with ZSM-5 mesoporous (ZMC) and Ni/ZMC ZSM-5 templates were synthesized and
gravimetrically known its adsorption capacity to H2 gases. ZMC carbon was
synthesized using a hard template method at a carbonation temperature of 900 oC
with sucrose as a source of carbon. A mesoporous ZSM-5 template was synthesized
by using a hydrothermal method at an aging and crystallization temperature of
respectively 60oC and 150oC for as long as 24 hours. The characterized result
of ZMC carbon using XRD powder has shown a diffracted pattern of amorphous
carbon. Impregnating Ni with ZMC carbon each resulted in 5%, 15% and 25% of
weight, which in turn also resulted in a diffractogram pattern of Ni/ZMC-5,
Ni/ZMC-15, and Ni/ZMC-25, where each patterns were uniform and had no additional
peaks. The results of SEM-EDAX showed that Ni had been successfully impregnated
on the surface of ZMC carbon with a random morphology surface of ZMC carbon.
The isothermal results of adsorption – desorption of N2 showed that the larger
the Ni loading on the supporting ZMC carbon, the smaller the surface area of
the ZMC specific carbon. The distribution of the pore size that was counted by
using the BJH method, which was applied to all the samples, was as big as 3,8
nm. The adsorption capacity of H2 was measured by using the gravimetry method
at ambient temperature for Ni/ZMC-5, Ni/ZMC-15, and Ni/ZMC-25, which each gave
a weight percentage of 0,331%; 0,663% and 0,649% respectively, whilst the ZMC
carbon has a weight of 2,18%.
Author: Ratna Ediati, Amirul
Mukminin, Nurul Widiastuti
Journal Code: jpkimiagg170030
