Dynamics of hydrogen in 4 mol % TiCl3-doped NaAlH4 nanoconfined within the mesoporous SBA15 was studied using QENS. Results show a higher fraction of hydrogen is mobile within these nanoconfined systems relative to bulk TiCl3-doped NaAlH4 but with overall localized motion. Nanostructured Ti-doped NaAlH4 exhibited poorer long-range diffusion kinetics than bulk materials of the same composition. Around 15% of hydrogen participated in longrange motion at 400K (relative to 5% in bulk). Around 65% to 75% of all available hydrogen atoms are mobile at 400K in localized dynamics described by rotation of AlHx units. Less than 10% hydrogen was mobile at higher temperatures of 420K and 450K, possibly because of the formation of Si-Al phases. Dynamic models indicate that nanostructured samples demonstrated slightly shorter jump lengths (2.09 ˚A to 2.16 ˚A) relative to bulk Ti-doped NaAlH4 (2.27 ˚A).