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The influence of the precursor form on the ammonia synthesis activity of ruthenium zeolite catalysts

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Abstract

At temperatures ranging from 300 to 450°C and under atmospheric pressure, Ru3/KY and Ru3/NaY catalysts prepared from sorbing Ru(CO)5 generated by Ru3(CO)12 on KY and NaY zeolites were found to be much more active for ammonia synthesis than Ru/KY and Ru/NaY prepared from cation exchange with Ru(NH3)6Cl3. Dynamic secondary ion mass spectrometric and X-ray photoelectron spectroscopic studies disclosed that the reduced Ru metal particles were mainly entrapped within the zeolite framework and that their nature is related to the precusor forms.

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Author notes

  1. Mo-hua Yang

    Present address: Unité de Catalyse et Chimie des Matériaux Divisés, Université Catholique de Louvain, Place Croix du Sud 1, B-1348, Louvain-la-Neuve, Belgium

Authors and Affiliations

  1. Department of Chemistry, National Tshinghua University, Hsincku, Taiwan, ROC

    Kuei-jung Chao, Long-hui Lin & Mo-hua Yang

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  1. Kuei-jung Chao
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  2. Long-hui Lin
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  3. Mo-hua Yang
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Chao, Kj., Lin, Lh. & Yang, Mh. The influence of the precursor form on the ammonia synthesis activity of ruthenium zeolite catalysts. Catal Lett 38, 279–282 (1996). https://doi.org/10.1007/BF00806582

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  • DOI: https://doi.org/10.1007/BF00806582

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