The effects of potassium on ammonia synthesis over iron single-crystal surfaces
Reads0
Chats0
TLDR
In this paper, the effects of potassium on ammonia synthesis over model iron single-crystal catalysts of (111), (100), and (110) orientation have been studied under high-pressure reaction conditions (20 atm reactant pressure of nitrogen and hydrogen).About:
This article is published in Journal of Catalysis.The article was published on 1988-01-01 and is currently open access. It has received 134 citations till now. The article focuses on the topics: Ammonia production & Potassium.read more
Citations
More filters
Journal ArticleDOI
Phd by thesis
TL;DR: In this paper, a sedimentological core and petrographic characterisation of samples from eleven boreholes from the Lower Carboniferous of Bowland Basin (Northwest England) is presented.
Journal ArticleDOI
Ammonia synthesis from first-principles calculations.
Karoliina Honkala,Anders Hellman,Ioannis N. Remediakis,Ashildur Logadottir,Anna Carlsson,Søren Dahl,Claus H. Christensen,Jens K. Nørskov +7 more
TL;DR: The rate of ammonia synthesis over a nanoparticle ruthenium catalyst can be calculated directly on the basis of a quantum chemical treatment of the problem using density functional theory, and offers hope for computer-based methods in the search for catalysts.
Journal ArticleDOI
Surface Science Approach to Modeling Supported Catalysts
TL;DR: In this article, a review of the literature on the latter model systems, that is, particles on a model support, is presented, where attention is paided to both preparation and use of such model systems.
Journal ArticleDOI
Electric Field Effects in Electrochemical CO2 Reduction
Leanne D. Chen,Leanne D. Chen,Makoto Urushihara,Makoto Urushihara,Karen Chan,Karen Chan,Jens K. Nørskov,Jens K. Nørskov +7 more
TL;DR: In this paper, the authors examined the CO2 → CO electrocatalytic pathway on Ag(111) using density functional theory (DFT) calculations and an explicit model of the electrochemical interface.
Journal ArticleDOI
High-pressure catalytic reactions over single-crystal metal surfaces
TL;DR: In this article, the effects of both electronegative (S and P) and electropositive (alkali metals) impurities upon the catalytic activity of metal single crystals for ammonia synthesis, CO methanation, alkane hydrogenolysis, ethylene epoxidation and water-gas shift are discussed.
References
More filters
Journal ArticleDOI
Phd by thesis
TL;DR: In this paper, a sedimentological core and petrographic characterisation of samples from eleven boreholes from the Lower Carboniferous of Bowland Basin (Northwest England) is presented.
Journal ArticleDOI
Thermal desorption of gases
TL;DR: In this paper, the activation energy, rate constant and order of reaction from flash-filament desorption experiments were examined, and two heating schedules were considered: a linear variation of sample temperature with time (T = T 0+st), and a reciprocal temperature variation (1 T = 1 T 0 −αt).
Journal ArticleDOI
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.
Journal ArticleDOI
The importance of C7 sites and surface roughness in the ammonia synthesis reaction over iron
TL;DR: In this article, it was shown that the relative order of activity for ammonia formation was Fe(111) > Fe(100), Fe(110), and Fe(212), and the presence of highly coordinated sites is more important than surface roughness.
Related Papers (5)
Adsorption of nitrogen on potassium promoted Fe(111) and (100) surfaces
Gerhard Ertl,S.B. Lee,M. Weiss +2 more