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Catalytic effects of oxygen carrier based chemical-looping reforming of CH4 with CO2
Catalytic effects of oxygen carrier based chemical-looping reforming of CH4 with CO2
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机译：基于氧气载体的CH4与CO2化学环重整的催化作用
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摘要
The invention relates to CeO2 and La2O3 for catalyzing Fe2O3—Al2O3 based chemical-looping reforming of CH4 with CO2 (CL-DRM). The reaction performance of all the composite oxygen carriers was evaluated in a fixed-bed reactor at atmospheric pressure condition. The influencing factors, including temperature and time-on-stream (TOS) were investigated. The characteristics of the oxygen carriers were checked with Brunauer-Emmett-Teller (BET) analysis and X-ray diffraction (XRD). The reducibility of the composite materials was elucidated with temperature-programmed reduction by CH4 (CH4-TPR). Preliminary experimental observations suggest that the simultaneous presence of CeO2 and La2O3 can not only enhance the reactivity of Fe2O3—Al2O3 toward CH4 oxidation and its oxygen releasing rate for fast reaction kinetics, but also improve the reactivity of its reduced form toward CO2 splitting.
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机译：本发明涉及CeO 2 和La 2 O 3 催化Fe 2 O 3 。 Sub> Al 2 O 3 基于CO 2 的CH 4 的化学环重整（CL-DRM ）。在大气压条件下在固定床反应器中评估所有复合氧载体的反应性能。研究了影响因素，包括温度和运行时间（TOS）。通过Brunauer-Emmett-Teller（BET）分析和X射线衍射（XRD）检查氧载体的特性。通过CH 4 （CH 4 -TPR）的程序升温还原，阐明了复合材料的还原性。初步实验结果表明，同时存在CeO 2 和La 2 O 3 不仅可以增强Fe 2 < / Sub> O 3 —Al 2 O 3 对CH 4 的氧化及其氧释放速率，可快速反应动力学，但也提高了其还原形式对CO 2 分裂的反应性。
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