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An Application of Steady‐state Isotopic‐transient Kinetic Analysis (SSITKA) in DeNO x Process
Author(s) -
Jabłońska Magdalena
Publication year - 2021
Publication title -
chemcatchem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.497
H-Index - 106
eISSN - 1867-3899
pISSN - 1867-3880
DOI - 10.1002/cctc.202001317
Subject(s) - catalysis , kinetic energy , chemistry , steady state (chemistry) , adsorption , chemical physics , transient (computer programming) , reaction intermediate , molecule , computational chemistry , nanotechnology , photochemistry , materials science , organic chemistry , physics , quantum mechanics , computer science , operating system
This Minireview presents an overview of the advancement and capabilities of the steady‐state isotopic transient kinetic analysis in the selective catalytic reduction of NO x . Firstly, a brief overview of the method and the kinetic parameters of catalyst‐surface reaction intermediates, including concentration and coverage of surface intermediates, surface residence time and intrinsic turnover frequency (TOF), is provided. Furthermore, the focus is on the application of SSITKA or a unique combination of SSITKA‐DRIFTS for the identification of active and/or inactive (spectators) species in NH 3 −SCR, H 2 −SCR and HCs−SCR. Different forms of adsorbed species and their formation rates revealing the main elementary steps on the catalyst's surface involving labeled molecules are discussed. The emphasis is laid on the optimization and design of industrial catalysts.