Carbon-supported ruthenium catalyst for the synthesis of ammonia.: The effect of the carbon support and barium promoter on the performance
Carbon-supported ruthenium catalyst for the synthesis of ammonia.: The effect of the carbon support and barium promoter on the performance
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DOI：
10.1016/s0926-860x(99)00090-3
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发表时间：
1999-08-02
影响因子：
5.5
通讯作者：
Presz, A
中科院分区：
文献类型：
--
作者：
Kowalczyk, Z;Jodzis, S;Presz, A
考察了氨合成用碳基钌催化剂的分散性和活性。使用钡作为促进剂。对一系列未促进的钌/碳材料的平行 XRD 和广泛的化学吸附（H-2、O-2 和另外的 CO）研究表明，碳载体的更发达的结构（孔隙率和表面积）导致钌分散度显着增加。研究发现存在超小中孔（直径 3 nm），但对于较小的中孔，它们很可能会减少。 (C) 1999 Elsevier Science B.V. 保留所有权利。
The dispersion and activity of carbon-based ruthenium catalysts for ammonia synthesis were examined. Barium was used as a promoter. Parallel XRD and extensive chemisorption (H-2, O-2 and additionally CO) studies of a series of unpromoted ruthenium/carbon materials showed that a more developed texture (porosity and surface area) of the carbon support results in a significant increase in the ruthenium dispersion. It was found that the presence of ultra small mesopores (diameters3 nm) but they decrease, very likely, for smaller ones. (C) 1999 Elsevier Science B.V. All rights reserved.