Systems, methods and materials for stable phase syngas generation

A method for operating a reactor system, the method comprising:

• providing a first input stream to a first reactor assembly in the reactor system, the first input stream including reducing gas and oxidant;
• determining an initial oxygen content of a first metal oxide in the first reactor assembly;
• measuring a first input stream oxygen content;
• measuring an oxygen content of an output of the first reactor assembly;
• calculating a percent oxygen depletion of the first metal oxide using the initial oxygen content of the first metal oxide, the first input stream oxygen content, and the oxygen content of the output of the first reactor assembly;
• when the percent oxygen depletion of the first metal oxide is above a first predetermined threshold between 5% and 15%, adjusting a mole ratio of reducing gas to oxidant in the first input stream;
• providing a second input stream to a second reactor assembly in the reactor system, the second input stream including reducing gas and oxidant;
• determining an initial oxygen content of a second metal oxide in the second reactor assembly;
• measuring a second input stream oxygen content;
• measuring an oxygen content of an output of the second reactor assembly;
• calculating a percent oxygen depletion of the second metal oxide using the initial oxygen content of the second metal oxide, the second input stream oxygen content, and the oxygen content of the output stream;
• and
• when the percent oxygen depletion of the second metal oxide is above a second predetermined threshold between 5% and 15%, adjusting a mole ratio of reducing gas to oxidant in the second input stream.