Biomass steam gasification produces a blend of H₂, CO, CH₄ and CO₂, designated as syngas. Syngas can be further combusted using fluidizable oxygen carriers (OC). This operation which is known as Chemical Looping Combustion (CLC), is valuable for syngas combustion as it involves nickel oxidation and nickel reduction, which are both exothermic reactions. To improve syngas CLC and establish its application, a new Ni-based oxygen carrier was studied using a Co and La modified γ-Al₂O₃ support. This type of OC considerably limits the NiAl₂O₄ formation. A Highly Performing Oxygen Carrier (HPOC) was engineered using a special preparation methodology to exclude NiAl₂O₄ species formation. The evaluation of this HPOC was developed using the fluidized CREC Riser Simulator reactor at mild CLC 550–650 °C temperatures. Reaction conditions employed ranged from 2 to 40 s and used a 0.5–1 fuel to oxygen stoichiometric supply ratio (ψ). It is shown that under these conditions, the HPOC demonstrates a stable performance, yielding 75–92% CO₂, displaying a 1.84–2.75 wt% (gO₂/gOC) oxygen transport capacity with 40–60% solid phase oxygen conversion.

生物质蒸汽气化产生H ₂，CO，CH ₄和CO ₂的混合物，称为合成气。合成气可以使用可流动的氧气载体（OC）进行进一步燃烧。这种称为化学循环燃烧（CLC）的操作对于合成气燃烧非常有价值，因为它涉及镍的氧化和镍的还原，两者都是放热反应。为了提高合成气CLC并建立其应用，一个新的镍基氧载体是使用钴研究和La改性的γ-Al ₂ ö ₃支持。这种类型的OC大大限制了NiAl ₂ O _4的形成。使用特殊的制备方法设计了高性能氧气载体（HPOC），以排除NiAl₂ O ₄种形成。该HPOC的评估是在CLC 550–650°C温和温度下使用流化CREC Riser Simulator反应器进行的。反应条件为2到40 s，使用的燃料与氧气的化学计量比为0.5-1。结果表明，在这些条件下，HPOC表现出稳定的性能，产生75-92％的CO ₂，显示出1.84-2.75 wt％（gO ₂ / gOC）的氧气输送能力，固相氧气转化率为40-60％。