Kinetic evidence: the rate-determining step for ammonia synthesis over electride-supported Ru catalysts is no longer the nitrogen dissociation step. Issue 1 (30th November 2016)

• Record Type: Journal Article
• Authors: Kobayashi, Yasukazu; Kitano, Masaaki; Kawamura, Shigeki; Yokoyama, Toshiharu; Hosono, Hideo
• Is Part Of: Catalysis science & technology. Volume 7:Issue 1(2017)
• Page Start: 47
• Page End: 50
• Publication Date: 2016-11-30
• Subjects: Catalysis -- Periodicals; 541.395
• DOI: 10.1039/c6cy01962e
• Languages: English
• ISSNs: 2044-4753

Abstract

Abstract : The rate-determining step for ammonia synthesis over Ru catalysts supported by electrides, such as [Ca24 Al28 O64 ] 4+ (e − )4 and Ca2 N:e −, is suggested to be the surface reactions of N and H adatoms, in which case the Langmuir–Hinshelwood model should be used to describe the kinetics. Abstract : Using kinetic analysis, we demonstrate that the rate-determining step for ammonia synthesis over Ru catalysts supported by electrides, such as [Ca24 Al28 O64 ] 4+ (e − )4 and Ca2 N:e −, is not the N2 dissociation step but the subsequent surface reactions of N and H adatoms, in which case the Langmuir–Hinshelwood model should be used to describe the kinetics.