Preparation and characterization of ultrafine cobalt powders and supported cobalt catalysts by freeze-drying
Preparation and characterization of ultrafine cobalt powders and supported cobalt catalysts by freeze-drying
复制标题
冷冻干燥超细钴粉及负载型钴催化剂的制备及表征
DOI：
10.1016/j.powtec.2008.09.017
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发表时间：
2009-04
影响因子：
5.2
通讯作者：
Nie, Zuoren
中科院分区：
文献类型：
--
作者：
Jiang, Yabao;Xi, Xiaoli;Xu, Xiangyang;Zuo, Tieyong;Nie, Zuoren
Ultrafine cobalt powders have been prepared by the freeze-drying method and supported cobalt catalysts have been prepared by a new freeze-drying immersion method. The results of XRD and SEM showed that the precursors were amorphous and most were massive with a size range of 2–5 µm. In the cobalt powders synthesized by freeze-drying, the grains were spherical in shape and with sizes ranging from 30 to 50 nm. IR analysis showed that Co existed in the precursor in the form of [Co(NH3)x]2(C2O4)3. EDS line scanning results indicated that catalysts prepared by freeze-drying could load more cobalt powders and the distribution was more homogeneous. Catalyst activity was also tested in the system of carbon monoxide oxidation. The catalysts in this research can lower the ignition temperature of CO and have increased catalytic properties.
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影响因子：
9.5
作者：
M. Murru;Albertino Prabowo;A. Gavriilidis
通讯作者：
M. Murru;Albertino Prabowo;A. Gavriilidis
DOI：
10.1016/s1466-6049(00)00098-2
发表时间：
2001
期刊：
International Journal of Inorganic Materials
影响因子：
--
作者：
G. Mazo;O. A. Shlyakhtin;S. Savvin
通讯作者：
G. Mazo;O. A. Shlyakhtin;S. Savvin
DOI：
10.1016/j.msea.2004.11.052
发表时间：
2005-03
影响因子：
6.4
作者：
X. Xi;Z. Nie;Jiancan Yang;Xiaotian Fu;Wen Wang;T. Zuo
通讯作者：
X. Xi;Z. Nie;Jiancan Yang;Xiaotian Fu;Wen Wang;T. Zuo
影响因子：
2.7
作者：
A. Calleja;E. Tijero;B. Martínez;S. Piñol;F. Sandiumenge;X. Obradors
通讯作者：
A. Calleja;E. Tijero;B. Martínez;S. Piñol;F. Sandiumenge;X. Obradors
影响因子：
4.6
作者：
L. Mančić;Z. Marinković;O. Milošević
通讯作者：
L. Mančić;Z. Marinković;O. Milošević