The growing strain on natural resources to meet the increasing global demand for energy and chemicals has been a challenge for several decades. This has motivated the emergence of several alternative technologies that provide effective and sustainable solutions while being economically feasible. Chemical looping is one such technology that utilizes the redox gas-solid reaction chemistries to inherently change the reaction mechanism, thus providing new and efficient pathways to produce the desired product. This gives rise to a platform that has higher degrees of freedom as compared to the traditional catalytic systems, which can be leveraged to create economically and environmentally sustainable processes. Several catalytic applications have been investigated as chemical looping alternatives and are given as follows: Oxidative coupling of methane (OCM): OCM refers to the reaction where two CH4 molecules couple to form hydrocarbon products such as ethane/ethylene in the presence of oxygen species. The chemical looping OCM technology uses a catalytic oxygen carrier to provide the oxygen species for CH4 coupling, consequently reducing the oxygen carrier. The lattice oxygen of this reduced oxygen carrier is replenished by air in a separate reactor which feeds the oxidized oxygen carrier back into the first reactor, thus completing the loop. Traditionally, O2 is co-fed with CH4 over a catalyst bed to produce these hydrocarbon products. The use of lattice oxygen as compared to O2 improves the selectivity of the desired products by eliminating the undesired gas-phase combustion reactions. Additionally, the use of an oxygen carrier expands the product slate up to C7 hydrocarbons, which has not been reported for the catalytic O2 co-feed system. However, developing an active oxygen carrier has been challenging due to the tradeoff between product selectivity and CH4 conversion. Thus, parametric tests have been conducted in a fixed bed reactor with the goal of understanding (open full item for complete abstract)