Premium
Front Cover: Direct measurement of enthalpy and entropy changes in NH 3 promoted O 2 activation over Cu−CHA at low temperature (ChemCatChem 11/2021)
Author(s) -
Wang Xueting,
Chen Lin,
Vennestrøm Peter N. R.,
Janssens Ton V. W.,
Jansson Jonas,
Grönbeck Henrik,
Skoglundh Magnus
Publication year - 2021
Publication title -
chemcatchem
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 1.497
H-Index - 106
eISSN - 1867-3899
pISSN - 1867-3880
DOI - 10.1002/cctc.202100645
Subject(s) - chabazite , enthalpy , chemistry , ammonia , front cover , oxygen , molecule , adsorption , inorganic chemistry , thermodynamics , zeolite , cover (algebra) , catalysis , organic chemistry , mechanical engineering , physics , engineering
The Front Cover shows an oxygen molecule activated on a pair of Cu‐ammonia complexes in a chabazite cage, which is an important reaction intermediate in ammonia‐assisted NO x reduction over Cu‐chabazite. In their Full Paper, X. Wang, L. Chen et al. investigate the heat generated through the oxygen activation process over Cu‐ammonia complex pairs in chabazite. The authors present measurements and first principle calculations of the adsorption enthalpy and entropy. Their results show that oxygen activation is promoted by the Cu‐ammonia complexes thanks to the mobility of these Cu species in chabazite. More information can be found in the Full Paper by X. Wang, L. Chen et al.