Influence of the method of synthesis on hydrogen adsorption properties of mesoporous binary B2O3/Al2O3 gel systems

The influence of the small platinum clusters on hydrogen sorption properties

“…The BET surface areas of BAl and Pt/BAl samples with different B:Al ratios are listed in table 2. Results in table 2 show that presence of the boron oxide component caused a decrease in BET surface area accompanied by an increase in content of B2O3 [7]. Parallel to reduce the specific surface area, pore diameter decrease occurs.…”

“…With the increase in the participation of component B2O3 can be seen an increase in the amorphous structure of the system. This amorphous structure can be accounted for by the type of structure of the polymeric gel and the homogeneous dispersal of B2O3 in the gel matrix [7].…”

“…The binary compositions B2O3/Al2O3 with a molar ratio between 0.25:1 and 1:1 were obtained by the sol-gel method [7,14].…”

“…A particular attention was paid to keep up to the standards developed for the measurements of this type to eliminate errors that could lead to wrong interpretation [18]. In this method the amount of adsorption is inferred from pressure measurements that are performed on the gas before and after the adsorption takes place, as we described in [7]. The effects of Pt on the binary systems and methods of their synthesis on the adsorption capabilities were analyzed.…”

“…From authors' previous research focused on examination of usability of B2O3/Al2O3 modified sol-gel systems as hydrogen sorbents [7] it has been concluded that their sorption properties depend on their textural parameters. Next, it was decided to use this binary system as a support for metal possessing hydrogen sorption ability (Pt) and to study its effect in hydrogen sorption.…”