The hydrogen release behavior of the quaternary hydride LiB0.33N0.67H2.67 has been successfully improved through the incorporation of small quantities of noble metal. Adding 5 wt % Pd either as Pd metal particles or as PdCl2 reduced the temperature T-1/2 corresponding to the midpoint of the hydrogen release reaction by Delta T-1/2 = -43 degrees C and -76 degrees C, respectively. PtCl2 and Pt nanoparticles supported on a Vulcan carbon substrate proved to be even more effective, with Delta T-1/2 = -90 degrees C. The amount of NH3 released during dehydro.,enation is reduced compared to that from additive-free material, and, more importantly, at temperatures below 210 degrees C hydrogen is released with no detectable NH3. In contrast to additive-free LiB0.33N0.67H2.67 which melts completely above 190 degrees C and releases hydrogen from the liquid state only above similar to 250 degrees C. hydrogen release from LiB0.33N0.67H2.67 + 5 wt % Pt/Vulcan carbon is accompanied by partial melting Plus a cascade through a series of solid intermediate phases. Calorimetric measurements indicate that both additive-free and Pt-added LiB0.33N0.67H2.67 release hydrogen exothermically, and hence the reverse reaction is thermodynamically unfavorable. By exposing partially dehydrogenated samples to high H-2 pressures at modest temperatures, fractional hydrogen uptake (roughly 15% of the released hydrogen) has been achieved. The mechanism by which noble metals promote hydrogen release is not known, but the behavior is consistent with that expected for a catalyst, including a large effect with small additions and saturation of the effect at low concentration.