From the thermodynamic analysis of the steam reforming process of raw coke oven gas, the H₂ amplification factor after the reforming can reach the highest (over 3.5) in the temperature range between 650 and 800°C, where the bifunctional catalysts to be prepared should have the best CO₂ adsorption performances as well as the excellent reforming catalytic performances. In this article, the bifunctional NiO/CaO@C12A7 catalysts were prepared at different preparation parameters, and among them, the catalyst sample prepared at the calcination temperature of 1,000°C and the calcination time of 4 h with co‐precipitation (CP) method showed the best CO₂ adsorption capacity as well as the best characterizations. And, in the steam reforming experiments of tar component from RCOG (Raw coke oven gas), under the effect of the bifunctional catalyst, the higher H₂ yield was obtained than that over the mixture of the independent reforming catalyst and CO₂ sorbent.

中文翻译：

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双功能催化剂将焦炉煤气中焦油进行蒸汽重整：制备参数对CO2吸附性能的影响

从原料焦炉煤气的蒸汽重整过程的热力学分析来看，重整后的H ₂放大系数在650至800°C的温度范围内可以达到最高（超过3.5），在此温度下应制备双功能催化剂。具有最佳的CO ₂吸附性能和优异的重整催化性能。本文采用不同的制备参数制备了双功能NiO / CaO @ C12A7催化剂，其中，共沉淀法（CP）在1,000℃的煅烧温度和4 h的煅烧时间下制备了催化剂样品。表现出最好的CO ₂吸附能力以及最佳表征。并且，在来自RCOG（原焦炉煤气）的焦油组分的蒸汽重整实验中，在双官能催化剂的作用下，获得了比独立重整催化剂和CO ₂吸附剂的混合物更高的H ₂产率。