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Hybrid-functional material for sorption-enhanced hydrogen-rich syngas production from biomass: Effect of material preparation process
Biomass & Bioenergy ( IF 6 ) Pub Date : 2020-11-26 , DOI: 10.1016/j.biombioe.2020.105886
Shujuan Zou , Weiguo Dong , Binhai Cheng , Yeshui Zhang , Paul T. Williams , Ming Zhao

Pyrolysis of waste biomass sawdust coupled with sorption-enhanced catalytic steam reforming of the pyrolysis gases has been investigated using a novel Ni–CaO–Ca2SiO4 hybrid-functional material for enhanced hydrogen production. Using hybrid stabilized materials with integrated sorption and catalysis functions overcomes the thermodynamic constraint of the reforming reaction equilibrium. The Ni–CaO–Ca2SiO4 hybrid-functional material was prepared under different catalyst drying methods to determine the influence on hydrogen yield. In addition, the process parameters of water injection rate, and catalytic temperature were investigated to optimize the process. The results showed that the presence of Ni–CaO–Ca2SiO4 significantly improved the yield and volume fraction of syngas. The spray-dried hybrid-functional material was shown to be the most effective in terms of H2 yield and purity in the syngas owing to its relatively high stability and higher surface area. The Ni–CaO–Ca2SiO4 material prepared using spray drying gave the highest H2 yield of 25.75 mmol gbiomass−1 that was eight times higher than the material-free test at a reforming temperature of 850 °C and water injection rate of 5 mL h−1. Furthermore, the highest yield of syngas (H2 and CO) was also achieved under these conditions, and where the optimal calorific value of the total gaseous products was 10.63 kJ m−3.



中文翻译:

用于从生物质中吸附增强富氢合成气的混合功能材料:材料制备过程的影响

利用新型的Ni–CaO–Ca 2 SiO 4杂化功能材料研究了废生物质锯末的热解以及热解气体的吸附增强催化蒸汽重整,以提高产氢量。使用具有整合的吸附和催化功能的杂化稳定材料可以克服重整反应平衡的热力学限制。通过不同的催化剂干燥方法制备了Ni–CaO–Ca 2 SiO 4复合功能材料,以确定对氢产率的影响。此外,研究了注水速率和催化温度的工艺参数以优化工艺。结果表明,Ni–CaO–Ca 2 SiO的存在图4显着提高了合成气的产率和体积分数。由于其相对较高的稳定性和较高的表面积,喷雾干燥的混合功能材料在合成气中的H 2产率和纯度方面显示出最有效的效果。使用喷雾干燥法制备的Ni–CaO–Ca 2 SiO 4材料具有最高的H 2产率,为25.75 mmol g生物量-1,这是在850°C的重整温度和注水速率下的无材料测试的八倍。 5mL h -1。此外,合成气(H 2在这些条件下也可以实现,并且总气态产物的最佳发热量为10.63 kJ m -3

更新日期:2020-11-27
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