B-Site-Metal-Mediated Coke-Resistant CO2 在矿表面上的电解
Tongbao Wang1,2, Yu Mao3, Pengfei Ou4
1State Key Laboratory of Bioinspired Interfacial Materials Science, Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, 199 Ren'ai Road, Suzhou, Jiangsu, 215123, China.
这项研究调查了基于矿的固体氧化物电化学细胞中的焦炭形成,以减少二氧化碳. 降低兰石铁酸盐矿中的含量可以增强焦炭的耐火性,从而实现稳定的碳中和化学生产.
科学领域:
- 材料科学 材料科学 材料科学
- 电化学 电化学 电化学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 使用固体氧化物电化学电池的高温二氧化碳 (CO2) 降解为一氧化碳 (CO) 对于碳中和化学生产至关重要.
- 焦炭形成是一个主要的挑战,导致设备故障,原因是对其在矿结构中的机制缺乏了解.
研究的目的:
- 为了研究矿结构和焦炭形成之间的关系.
- 了解铁 (Fe) 石化计如何影响兰,,和铁酸盐矿的焦炭电阻.
主要方法:
- 研究了矿矿矿 (ABO3结构) 上的焦炭形成.
- 改变了 (Co) 与铁 (Fe) 的比率,以分析B位金属溶解及其对焦炭催化的影响.
- 使用 (La0.6Sr0.4) 0.95Co0.2Fe0.8O3-δ作为电化学测试的模型矿.
主要成果:
- 降低Co:Fe比率抑制了B位金属脱溶,减少了这些金属/合金催化的焦炭形成.
- 在800°C时达到0.86±0.02 atm的输出CO压力,接近热力学焦化值.
- 在320小时内在220 mA cm-2.2的220 mA cm-2.2的320 atm的出口CO压力下经过稳定的操作.
结论:
- 矿中优化的Fe固态度显著提高了焦炭的抗性.
- 开发了一种稳定的固体氧化物电化学电池,以有效地将二氧化碳减少为二氧化碳.
- 这些发现为多碳产品电合成的高性能合系统铺平了道路.
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