Combinatorial Supports for Ru-based Ammonia Synthesis Catalysts
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.
作 者： Gui Yu HUANG Jing Dong LIN Zhong Xiang XU Dai Wei LIAO 作者单位： Gui Yu HUANG(Department of Chemical Engineering and Bioengineering)Jing Dong LIN,Zhong Xiang XU(Department of Chemistry)
Dai Wei LIAO(Department of Chemistry;The State key Laboratory of Physical Chemistry on Solid Surfaces;Institute of Physical Chemistry, Xiamen University, Xiamen 361005)
刊 名： 中国化学快报（英文版） ISTIC SCI 英文刊名： CHINESE CHEMICAL LETTERS 年，卷(期)： 2005 16(2) 分类号： 关键词： Hydrotalcite magnesium aluminum oxide ammonia synthesis ruthenium