Production of hydrogen from alcohols
AssigneeRegents of the Univeristy of Minnesota
InventorsGregg A. Deluga, Lanny D. Schmidt
Life of this patent
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Abstract
A process for producing hydrogen from ethanol or other alcohols. The alcohol, optionally in combination with water, is contacted with a catalyst comprising rhodium. The overall process is preferably carried out under autothermal conditions.
Claims47
A process for the production of hydrogen comprising forming a film of a composition comprising at least one alcohol comprising at least 2 carbon atoms on a wall of a reactor;
- vaporizing the composition;
- and contacting the composition with an oxygen-containing gas and a stratified catalyst under conditions effective to produce hydrogen.
The process of claim wherein the process is carried out under autothermal conditions.
A process for the production of hydrogen comprising:
- providing a feed gas comprising at least one alcohol comprising at least 2 carbon atoms;
- providing a catalyst having a backface;
- forming a film of the feed gas on a wall of a reactor;
- vaporizing the feed gas;
- and
- contacting the feed gas with the catalyst under conditions effective to produce hydrogen;
- wherein the backface of the catalyst is at a temperature of at least about 300° C. after contact with the alcohol, and wherein the feed gas is supplied at a temperature of no greater than about 160° C. prior to contact with the catalyst.
A process for the production of hydrogen comprising:
- providing a feed gas comprising at least one alcohol comprising at least 2 carbon atoms;
- providing a catalyst;
- forming a film of the feed gas on a wall of a reactor;
- vaporizing the feed gas;
- and
- contacting the feed gas with the catalyst under conditions effective to produce hydrogen;
- wherein the residence time of the feed gas over the catalyst is no greater than about 100 milliseconds, and wherein the feed gas is supplied at a temperature of no greater than about 160° C. prior to contact with the catalyst.
A process for the production of hydrogen comprising:
- providing a feed gas comprising at least one alcohol comprising at least 2 carbon atoms;
- providing a catalyst;
- forming a film of the feed gas on a wall of a reactor;
- vaporizing the feed gas;
- and
- contacting the feed gas with the catalyst under conditions effective to produce hydrogen, wherein the feed gas is supplied at a temperature of no greater than about 160° C. prior to contact with the catalyst;
- and wherein the overall process occurs under autothermal conditions.
A process for the production of hydrogen comprising:
- providing a feed gas comprising at least one alcohol comprising at least 2 carbon atoms;
- providing a stratified catalyst;
- forming a film of the feed gas on a wall of a reactor;
- vaporizing the feed gas;
- and
- contacting the feed gas with the stratified catalyst under conditions effective to produce hydrogen;
- wherein the stratified catalyst comprises at least one first portion and at least one second portion, wherein the first portion comprises at least one metal selected from the group consisting of Groups 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, and 14 of the Periodic Table, oxides thereof, and combinations thereof, and the second portion comprises at least one metal selected from the group of Pd, Pt, Rh, Ir, Cu, Co, Zn, V, Ag, Ni, Ce, Zr, Y, Al, oxides thereof, and combinations thereof.
Dependencies are inferred from the claim text.