Disproportionation resistant metal hydride alloys for use at high temperatures in catalytic converters
AssigneeErgenics, Inc.
InventorsP. Mark Goldben, Gary D. Sandrock
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AssigneeErgenics, Inc.
InventorsP. Mark Goldben, Gary D. Sandrock
Estimating the term…
Metal hydrides for absorbing hydrogen which are capable of undergoing repeated charge/discharge cycles of absorbing and desorbing hydrogen at high temperatures and cycles through a high temperature followed by a low temperature. These alloys are intended for use in devices such as heat pumps, heat exchangers, energy storage devices, thermal actuators, temperature sensors and electrochemical cells. The alloys generally comprise the chemical formula A.sub.1-x B.sub.x where A is selected from the group of elements consisting of Ti, Hf, Y, B is selected from the group of elements consisting of Nb, Ni, Co, and Fe, and x is in a range from 0.05 to approximately 0.80, and specific alloys comprise hafnium-nickel (HfNi), hafnium cobalt (HfCo), hafnium-iron (Hf.sub.2 Fe), yttrium-nickel (YNi) and titanium-niobium Ti.sub.1-x Nb.sub.x, where x is in a range of from 0.05<.times.<0.60. Optionally, additives such as Al, B, Co, Cr, Cu, Hf, Mn, Mo, Ni, Fe, Ga, Ge, Si, Sn, Ta, V and Zr may be added in proportions up to about 10 atomic percent relative to the base alloy set forth above to provide for specific customized applications. Also, methods of use for such high temperature disproportionation resistant alloys where the temperature is cycled through an elevated and a lower, sometimes room, temperature are disclosed.
An internal combustion engine powered vehicle system having an internal combustion engine and catalytic converter means for the reaction of pollutants contained in engine exhaust gas, said system including an arrangement for rapid pre-heating of said catalytic converter means during engine start-up when the engine is cold, said arrangement comprising:
Dependencies are inferred from the claim text.