Metal ferrite oxygen carriers for conversion of CO2 to CO and fuel to syngas or CO

A method for chemical looping dry reforming of methane comprising:

• delivering a metal ferrite oxygen carrier comprising MzFexOy to a fuel reactor, where 0<x≤4, z>0 and 0<y≤6, and where M is at least one of Mg, Ca, Ba, Sr or combinations thereof;
• delivering a fuel stream to the metal ferrite oxygen carrier in the fuel reactor and maintaining the fuel reactor at a reducing temperature, where the reducing temperature is sufficient to reduce some portion of the metal ferrite oxygen carrier and oxidize some portion of the fuel stream, and generating gaseous products containing H2, CO or CO2 gas in the fuel reactor;
• delivering the reduced metal ferrite to an oxidation reactor;
• oxidizing the reduced carrier by contacting the reduced carrier and carbon dioxide at an oxidizing temperature, where the oxidizing temperature is sufficient to generate an oxidizing reaction, where reactants of the oxidizing reaction comprise some portion of the carbon dioxide, some portion of the M component, and some portion of a FecOd component, where c>0 and d≥0 and where a product of the oxidizing reaction is CO and a re-oxidized carrier, where the re-oxidized carrier comprises some portion of the MzFexOy;
• and
• withdrawing a product stream CO from the oxidation reactor, where the gaseous products comprise the product stream, and where at least >50 vol. % of the product stream consists of CO.