不同螯合剂对镍铁催化层的结构与抗积碳性能的影响
发布时间：2018-10-29 16:39
【摘要】：通过热分解法制备Ni0.75Fe0.25催化层,研究了不同螯合剂(柠檬酸,乙醇酸和D-葡萄糖酸)对催化层的结构及抗积碳性能的影响。结果表明:热分解法制得的晶相为Fe Ni3相,其结构及尺寸均与螯合剂有关。氧-程序升温氧化和拉曼光谱分析表明含D-葡萄糖酸的催化层具有最佳的抗积碳能力。采用D-葡萄糖酸改性催化层制作的单电池在650℃的甲烷燃料中最大功率达289 m W·cm-2。另外,该电池在甲烷燃料中以600 m A·cm-2的电流密度下运行9 h后电压仍保持初始电压的61%,而未改性的单电池电压相同运行条件下仅余53%。
[Abstract]:The effects of different chelating agents (citric acid, glycolic acid and D-gluconic acid) on the structure and anti-carbon deposition of Ni0.75Fe0.25 catalytic layer were studied. The results show that the crystalline phase obtained by thermal decomposition method is Fe Ni3 phase, and its structure and size are related to chelating agent. Oxygen-programmed oxidation and Raman spectroscopy show that the catalytic layer containing D-gluconic acid has the best ability to resist carbon deposition. The maximum power of single cell prepared by modified catalytic layer of D-gluconic acid in methane fuel at 650 鈩，
本文编号：2298240
[Abstract]:The effects of different chelating agents (citric acid, glycolic acid and D-gluconic acid) on the structure and anti-carbon deposition of Ni0.75Fe0.25 catalytic layer were studied. The results show that the crystalline phase obtained by thermal decomposition method is Fe Ni3 phase, and its structure and size are related to chelating agent. Oxygen-programmed oxidation and Raman spectroscopy show that the catalytic layer containing D-gluconic acid has the best ability to resist carbon deposition. The maximum power of single cell prepared by modified catalytic layer of D-gluconic acid in methane fuel at 650 鈩，
本文编号：2298240
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