Citation: Gui Yu HUANG, Jing Dong LIN, Zhong Xiang XU, Dai Wei LIAO. Combinatorial Supports for Ru-based Ammonia Synthesis Catalysts[J]. Chinese Chemical Letters, ;2005, 16(2): 273-274. shu

Combinatorial Supports for Ru-based Ammonia Synthesis Catalysts

1.
Department of Chemical Engineering and Bioengineering, Department of Chemistry;
2.
Department of Chemistry;
3.
The State key Laboratory of Physical Chemistry on Solid Surfaces;
4.
Institute of Physical Chemistry, Xiamen University, Xiamen 361005

Received Date: 24 November 2003

Fund Project: This work was supported by the NNSF of China (20273053, 20023001 and 29933040), the 973 Programming (001CB108906) and the NSF of Fujian province (E0310001).

The support materials of ruthenium-based catalysts for ammonia synthesis were prepared using mixed solutions composed of magnesium nitrate, aluminum nitrate and calcium nitrate with a certain ratio. The catalysts supported on complex oxides were more active and the optimal activity temperatures were lower than that supported on single oxide under the same conditions.The catalyst with Mg-Al complex oxide as support prepared by calcinafing hydrotalcite-like compound had significantlyhigher activity, 38.42 mL NH₃·h^-1·g^-1 at 673 K. The BET determination showed that the Mg-Al complex oxide possessed large surface area, 140.95 m²·g^-1, similar to γ-Al₂O₃.
- Hydrotalcite,
- magnesium aluminum oxide,
- ammonia synthesis,
- ruthenium.
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