Hydrogen reactor

1. A reactor comprising:

a water source containing liquid water;

a first reactant reservoir containing a first reactant;

a second reactant reservoir containing a second reactant;

a first reactant feeder operatively coupled to the first reactant reservoir and configured to selectively transport the first reactant to the water source, wherein the first reactant feeder is configured to selectively react the first reactant with the liquid water, and wherein a first reaction of the liquid water with the first reactant generates hydrogen gas;

a second reactant feeder operatively coupled to the second reactant reservoir and configured to selectively transport the second reactant to the water source, wherein the second reactant feeder is configured to selectively react the second reactant with the liquid water independently from the reaction between the liquid water and the first reactant, wherein a second reaction of the liquid water with the second reactant generates hydrogen gas, and wherein a first reaction rate of the first reaction is different from a second reaction rate of the second reaction; and

a processor configured to control the first reactant feeder to control the first reaction and the second reactant feeder to control the second reaction based at least in part on a desired hydrogen generation profile.

2. The reactor of claim 1 , wherein both the first reactant and the second reactant are aluminum alloys comprising greater than or equal to 0.1 weight percent (wt. %) silicon (Si) and less than or equal to 12 wt. % Si, and/or greater than or equal to 0.1 wt. % magnesium (Mg) and less than or equal to 50 wt. % Mg based on a total weight of the aluminum alloy, and wherein the first reactant and the second reactant have different compositions.

3. The reactor of claim 2 , wherein:

the first reactant comprises greater than or equal to 0.1 weight percent (wt. %) silicon (Si) and less than or equal to 12 wt. % Si based on a total weight of the aluminum alloy, and

the second reactant comprises greater than or equal to 0.1 wt. % magnesium (Mg) and less than or equal to 50 wt. % Mg based on a total weight of the aluminum alloy.

4. The reactor of claim 2 , wherein at least one of the first reactant and the second reactant further comprises greater than or equal to 0.1 wt. % gallium (Ga) and less than or equal to 50 wt. % Ga based on the total weight of the aluminum alloy, wherein the Ga is concentrated proximate to grain boundaries of the aluminum alloy.

5. The reactor of claim 2 , wherein at least one of the first reactant and the second reactant further comprises Ga and indium (In), tin (Sn), bismuth (Bi) and/or zinc (Zn) in a combined amount of greater than or equal to 0.1 wt. % and less than or equal to 50 wt. % based on the total weight of the aluminum alloy, wherein the Ga and In, Sn, Bi, and/or Zn are proximate to grain boundaries of the aluminum alloy.

6. The reactor of claim 1 , wherein the first reaction and the second reaction occur at the water source, and further comprising a gas outlet configured to release hydrogen gas generated at the water source from the reactor.

7. The reactor of claim 1 , wherein the first reaction and the second reaction occur at the water source, and the first and second reactions generate waste at the water source, and further comprising a waste outlet configured to remove waste generated at the water source from the reactor.

8. The reactor of claim 1 , wherein in at least one operating mode, the processor is configured to control the first reactant feeder and the second reactant feeder so that the first reaction and the second reaction occur simultaneously.

9. A reactor comprising:

a water source containing liquid water;

a first reactant reservoir containing a first reactant;

a second reactant reservoir containing a second reactant;

a reaction chamber;

a water feeder operatively coupled to the water source and configured to selectively transport the liquid water to the reaction chamber;

a first reactant feeder operatively coupled to the first reactant reservoir and configured to selectively transport the first reactant to the reaction chamber, wherein the first reactant feeder is configured to selectively react the first reactant with the liquid water, and wherein a first reaction of the liquid water with the first reactant generates hydrogen gas;

a second reactant feeder operatively coupled to the second reactant reservoir and configured to selectively transport the second reactant to the reaction chamber, wherein the second reactant feeder is configured to selectively react the second reactant with the liquid water independently from the reaction between the liquid water and the first reactant, wherein a second reaction of the liquid water with the second reactant generates hydrogen gas, and wherein a first reaction rate of the first reaction is different from a second reaction rate of the second reaction; and

a processor configured to control the first reactant feeder, the second reactant feeder, and the water feeder to control the first reaction and the second reaction based at least in part on a desired hydrogen generation profile.

10. The reactor of claim 1 , wherein the processor is configured to determine the desired hydrogen generation profile.