Journal ArticleDOI
Support and promoter effect of ruthenium catalyst: II. Ruthenium/alkaline earth catalyst for activation of dinitrogen
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TLDR
In this article, the turnover frequency (TOP) of the ammonia synthesis on Ru was promoted by using alkaline earths as supports, and the TOF of this reaction on RuMgO and RuCaO was as high as those on RuCsOHAl2O3 catalyst.About:
This article is published in Journal of Catalysis.The article was published on 1985-04-01. It has received 187 citations till now. The article focuses on the topics: Catalyst support & Catalysis.read more
Citations
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Journal ArticleDOI
Structure sensitivity of supported ruthenium catalysts for ammonia synthesis
Claus J. H. Jacobsen,Søren Dahl,Poul Hansen,Eric Törnqvist,Lone Jensen,Henrik Topsøe,Dorthe V Prip,Pernille B Møenshaug,Ib Chorkendorff +8 more
TL;DR: The catalytic ammonia synthesis activities of four supported ruthenium catalysts are reported in this paper, where it is shown that Ru/MgAl2O4 is more active than two similar Ru/C catalysts.
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Preparation and characterization of chlorine-free ruthenium catalysts and the promoter effect in ammonia synthesis: 3. A magnesia-supported ruthenium catalyst
TL;DR: The support and promoter effects of Ru in ammonia synthesis were studied systematically using Ru carbonyl, Ru3(CO)12, as a precursor of the Ru catalyst as discussed by the authors.
Journal ArticleDOI
Preparation of Ru Nanoparticles Supported on γ-Al2O3 and Its Novel Catalytic Activity for Ammonia Synthesis
TL;DR: In this paper, uniform ruthenium metal nanoparticles with an average diameter of 5 nm were prepared and supported on γ-Al2O3 up to 6.3 wt%.
Journal ArticleDOI
Probing the Electronic Effect of Carbon Nanotubes in Catalysis: NH3 Synthesis with Ru Nanoparticles
TL;DR: The dissociative adsorption of N(2), which is an electrophilic process and the rate-determining step of ammonia synthesis, is more facile over the outside Ru than that over the inside one.
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Support and promoter effect of ruthenium catalyst: I. Characterization of alkali-promoted ruthenium/alumina catalysts for ammonia synthesis
TL;DR: In this article, the activation of the promoted catalyst was studied in detail, and the addition of an alkali precursor, especially CsNO3, promoted the turnover frequency (TOF) of ammonia synthesis, and also increased Ru dispersion.
References
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Journal ArticleDOI
X-ray photoelectron spectroscopy of copper compounds
TL;DR: In this article, the X-ray photoelectron spectra of some forty-six copper compounds and complexes have been measured and the chemical shifts obtained from accurate determinations of the binding energies have been qualitatively explained on the basis of the Pauling electronegativity concept using the group electrophoresis of Huheey for the polyatomic counter anions.
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Activation of nitrogen by alkali metal promoted transition metal I. Ammonia synthesis over ruthenium promoted by alkali metal
TL;DR: In this article, it was shown that ruthenium is remarkably promoted by the addition of alkali metal, particularly when supported by active carbon (AC) or alumina.
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X-Ray photoelectron spectroscopic studies of ruthenium-oxygen surfaces
K.S. Kim,Nicholas Winograd +1 more
TL;DR: In this article, the authors used X-ray photoelectron spectroscopy (XPS) to study the complex surface chemistry of the ruthenium-oxygen system as a function of temperature and under the influence of Ar+ and O2+ ion-bombardment.
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Iron single crystals as ammonia synthesis catalysts: Effect of surface structure on catalyst activity
TL;DR: In this paper, the activity of three iron single-crystal faces with respect to their ability to catalyze ammonia synthesis was investigated and the activation energy for ammonia synthesis on the Fe(111) surface was determined as 19.4 kcal mole−1.