期刊
CATALYSIS LETTERS
卷 124, 期 3-4, 页码 168-173出版社
SPRINGER
DOI: 10.1007/s10562-008-9534-1
关键词
CNTs-cordierite; nitric acid treatment; Ru; ammonia synthesis
资金
- National Natural Science Foundation of China [20576021]
- Science & Technology Priority Project of Fujian Province [2005H201-2]
- National Key Technology R&D Program of China [2007BAE08B00]
Nitric acid treatment of CNTs-cordierite monolith changes the amount of Mg, Si, Al and oxygen-containing functional groups, thereby influencing on the surface area and pore size distribution of composite materials. Appropriate treatment of CNTs-cordierite with nitric acid increases the surface area and the amount of micropores slightly, but improves the activities for ammonia synthesis noticeable, which might be a consequent of the variation of the amount of Mg, Si, Al and oxygen-containing functional groups. The ammonia synthesis activity of Ba-Ru/CNTs-cordierite increase by more than 30% if the support material is treated at 30 degrees C for 4 h with nitric acid.
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