Process for the storage delivery of hydrogen using catalyst

摘要

Hydrogenated liquid organic compounds are used for storage and supply of hydrogen at near ambient conditions. The hydrogen is released from the hydrogenated liquid organic compounds through a catalytic dehydrogenation reaction using a M/support or M-M′/support catalyst. The M/support catalyst comprises a metal M selected from Pt, Pd, Rh, Ru, Ir, Os, or combination thereof, and a support selected from Y2O3 or V2O5 or combinations thereof. The M-M′/support catalyst comprises a first metal M selected from Cu, Ag, Au, or combination thereof, a second metal M′ selected from Pt, Pd, Rh, Ru, Ir, Os, Fe, Ni, Re, Mo, W, V, Cr, Co or combinations thereof, and a support selected from activated carbon, alumina, alumite, zirconia, silica or combination thereof. Synergistic effects are created by using the combination of the M and M′ in the catalyst, which result in shifting of the equilibrium of the reaction favorably to dehydrogenation.

主权项

1. An improved process for delivery of hydrogen, the process comprising:
dehydrogenating hydrogenated liquid organic compounds using a catalyst in a dehydrogenation reactor to produce hydrogen, the catalyst being heated at a temperature in the range of 120-400° C.; removing the hydrogen from the reactor by introducing a carrier gas in the reactor; separating the hydrogen with a condenser by cooling to a temperature in the range of 2-50° C., followed by passing the hydrogen through an entrainment separator to release the hydrogen, wherein the catalyst is selected from: i. M/support wherein metal M is at least one metal selected from the group consisting of Pt, Pd, Rh, Ru, Ir, and Os, and said metal is dispersed on a support, the support is at least one metal oxide selected from the group consisting of Y2O3, V2O5 and combinations thereof or; ii. M-M′/support wherein metal M is at least one metal selected from the group consisting of Cu, Ag, and Au; metal M′ is at least one metal selected from Pt, Pd, Rh, Ru, Ir, Os, Fe, Ni, Re, Mo, W, V, Cr, Co and combinations thereof, and said metals are dispersed on a support, the support is selected from the group consisting of activated carbon, alumina, alumite, zirconia, silica and combinations thereof.