Abstract In this study, the catalytic activity and selectivity of Fe-Ca/SiO2 catalyst systems for light hydrocarbon liquids (HCL) and gaseous products (GPs) were investigated in a fixed-bed reactor at N2 pressure 0.1 MPa, temperature 600–750 °C. A series of Fe-Ca/SiO2 catalysts were synthesized, characterized and evaluated for the oxygen transfer. The catalytic pyrolysis of biomass with catalysts (Fe/SiO2, Ca/SiO2, Fe-Ca/SiO2) was studied to identify the selective deoxygenation. With the addition of Fe/SiO2 catalyst, the oxygen was crucially removed in the form of CO2, and with Ca/SiO2 catalyst, more oxygen was removed in the form of H2O. In addition, the hydrogen content with Fe-Ca/SiO2 catalyst was higher than that of raw biomass. The hydrogen with Fe-Ca/SiO2 increased from 57.41 ml/g to 109.04 ml/g. It also effectively improved the aromatics in bio-oil with the addition of Fe-Ca/SiO2 catalyst during the pyrolysis process. It was found that the addition of Ca remarkable promoted the catalytic activity of Fe catalyst due to forming Ca2Fe2O5. A possible mechanism was proposed to be responsible for the high catalytic activity and deoxygenation in Fe-Ca/SiO2 catalyst systems.

中文翻译：

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一种用于通过生物质催化热解高效生产轻芳烃的 Fe-Ca/SiO2 催化剂

摘要 本研究在固定床反应器中，在 N2 压力 0.1 MPa、温度 600-750 ° 的条件下，研究了 Fe-Ca/SiO2 催化剂体系对轻烃液体 (HCL) 和气体产物 (GPs) 的催化活性和选择性。 C。合成、表征和评估了一系列 Fe-Ca/SiO2 催化剂的氧转移。研究了使用催化剂（Fe/SiO2、Ca/SiO2、Fe-Ca/SiO2）对生物质进行催化热解，以确定选择性脱氧。添加 Fe/SiO2 催化剂后，氧以 CO2 的形式被去除，而使用 Ca/SiO2 催化剂，更多的氧以 H2O 的形式去除。此外，Fe-Ca/SiO2 催化剂的氢含量高于生物质的氢含量。含 Fe-Ca/SiO2 的氢从 57.41 ml/g 增加到 109.04 ml/g。在热解过程中加入Fe-Ca/SiO2催化剂，也有效地改善了生物油中的芳烃。发现Ca的加入显着促进了Fe催化剂的催化活性，因为形成了Ca2Fe2O5。提出了一种可能的机制来负责 Fe-Ca/SiO2 催化剂体系中的高催化活性和脱氧作用。