Noble metal-free nickel containing catalyst formulations for hydrogen generation
View Patent ↗The invention relates to noble metal-free nickel catalysts that exhibit both high activity and selectivity to hydrogen generation and carbon monoxide oxidation. The noble metal-free water gas shift catalyst of the invention comprises Ni in either a supported or a bulk state and at least one of Ge, Cd, In, Sn, Sb, Te, Pb, their oxides and mixtures thereof.
1. A noble metal-free catalyst for catalyzing the water gas shift reaction consisting essentially of:
a) unsupported bulk Ni,
b) In, its oxides or mixtures thereof; and
c) Cd, its oxides or mixtures thereof.
2. The catalyst according to claim 1 , wherein the water gas shift catalyst comprises between about 0.05 wt. % to about 99 wt. %, with respect to the total weight of all catalyst components, of Ni present in the water gas shift catalyst.
3. The catalyst according to claim 1 , wherein the water gas shift catalyst comprises between about 0.50 wt. % to about 99 wt. %, with respect to the total weight of all catalyst components, of Ni present in the water gas shift catalyst.
4. A noble metal-free catalyst for catalyzing the water gas shift reaction consisting essentially of:
a) unsupported bulk Ni,
b) Sn, its oxides or mixtures thereof; and
c) Cd, its oxides or mixtures thereof.
5. The catalyst according to claim 4 , wherein the water gas shift catalyst comprises between about 0.05 wt. % to about 99 wt. %, with respect to the total weight of all catalyst components, of Ni present in the water gas shift catalyst.
6. The catalyst according to claim 4 , wherein the water gas shift catalyst comprises between about 0.50 wt. % to about 99 wt. %, with respect to the total weight of all catalyst components, of Ni present in the water gas shift catalyst.
7. A noble metal-free catalyst for catalyzing the water gas shift reaction consisting essentially of:
a) unsupported bulk Ni,
b) In, its oxides or mixtures thereof; and
c) Sb, its oxides or mixtures thereof.
8. The catalyst according to claim 7 , wherein the water gas shift catalyst comprises between about 0.05 wt. % to about 99 wt. %, with respect to the total weight of all catalyst components, of Ni present in the water gas shift catalyst.
9. The catalyst according to claim 7 , wherein the water gas shift catalyst comprises between about 0.50 wt. % to about 99 wt. %, with respect to the total weight of all catalyst components, of Ni present in the water gas shift catalyst.