In the present work chemical looping gasification (CLG) of biomass, with introduction of steam and CaO, was conducted in a fixed bed to produce syngas. The addition of steam facilitated both the reforming reaction and water gas shift reaction to produce more gaseous products, especially H₂. Depending on gas yield and gasification efficiency, the requirement of steam was sufficient for CLG at steam flow n = 0.6 r/min. It was also confirmed that CaO had a positive effect in gasification and the addition in the ratio of CaO/C = 1 was adequate for syngas production. Moreover, CaO mainly played a role as CO₂ absorbent at low temperature but as catalyst above 700 °C. However, the catalysis of CaO received the major attention because of its availability for high syngas yield (1.367 m³/kg) and efficiency (carbon conversion efficiency was 89.28% and gasification efficiency was 88.81%) at 800 °C. CaO was found to retard the sintering and porosity reduction of Fe₂O₃, the oxygen carrier, by covering Fe₂O₃ and forming calcium ferrites during multiple redox cycles.

在当前的工作中，在固定床中进行了生物质的化学循环气化（CLG），并引入了蒸汽和CaO，以生产合成气。蒸汽的加入促进了重整反应和水煤气变换反应，以产生更多的气态产物，特别是H ₂。根据气体产量和气化效率，在蒸汽流量n = 0.6 r / min时，CLG所需的蒸汽量已足够。还证实CaO在气化中具有积极作用，并且以CaO / C ＝ 1的比例添加对于合成气的生产是足够的。另外，CaO在低温下主要起CO ₂吸收剂的作用，但在700℃以上时起催化剂的作用。然而，CaO的催化作用因其可用于高合成气收率（1.367 m³ / kg）和效率（碳转化效率为89.28％，气化效率为88.81％）在800°C下。发现CaO通过覆盖Fe ₂ O ₃并在多个氧化还原循环中形成铁素体钙而阻碍了氧气载体Fe ₂ O ₃的烧结和孔隙率降低。