ISSN:
1572-879X
Keywords:
carbon monoxide adsorption
;
ETS‐10
;
heterogeneous catalysis
;
IR spectroscopy
;
molecular sieves
;
nitrogen adsorption
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract Carbon monoxide and dinitrogen adsorbed, at nominally liquid‐nitrogen temperature, on Mg2+‐exchanged ETS‐10 were found to form Mg2+...CO and Mg2+...N2 adducts involving cations located in the main channels (12‐membered rings) of the titanosilicate molecular sieve. These adducts gave main IR absorption bands at 2190 and 2203 cm-1 for CO, and at 2336 and 2339 cm-1 for N2, which were assigned to the fundamental stretching mode of the diatomic molecules polarized by the electric field created by Mg2+ ions. Corresponding adducts with Na+ and K+ ions, not exchanged with Mg2+, were also present. The results, which are relevant to the potential use of ETS‐10 as a catalyst, lend support to previous structural studies suggesting the existence of two different cation sites along the main channel of ETS‐10.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1019028513390
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