Publication detail

Determination of adsorption heats of individual adsorption complex by combination of microcalorimetry and FTIR spectroscopy

Authors: Bulánek Roman | Koudelková Eva

Year: 2013

Type of publication: článek v odborném periodiku

Name of source: Journal of Thermal Analysis and Calorimetry

Publisher name: Springer

Page from-to: 97-103

Titles:

Language	Name	Abstract	Keywords
cze	Stanovení adsorpčních tepel individuálních adsorpčních komplexů pomocí kombinace mikrokalorimetrie a FTIR spektroskopie	Adsorpce CO jako testovací molekuly on K-FER zeolity s různým poměrem SiAl byla zkoumána. Úspěšné stanovení adsorpčních tepel individuálních adsorpčních komplexů tvořených adsorbovanými molekulami CO na K-FER zeolitech při 300 K pomocí kombinované IR spektroskopie s adsorpční mikrokalorimetrií bylo oznámeno.	adsorpční teplo; CO; zeolit; FER; kalorimetrie; FTIR
eng	Determination of adsorption heats of individual adsorption complex by combination of microcalorimetry and FTIR spectroscopy	Adsorption of CO as a probe molecule on K-FER zeolites differing in Si/Al ratio was investigated. Successful determination of adsorption heats of individual adsorption complexes formed upon adsorption of CO molecules on K-FER zeolites at 300 K by combination of IR spectroscopy with adsorption microcalorimetry is reported. Adsorption heat of bridged carbonyl complexes, where CO molecule interacts with two nearby extraframework K+ cations, was experimentally determined for the first time. It was found that bridged complexes on dual cationic sites exhibit adsorption heat of 34.8 kJ mol(-1), whereas monodentate carbonyls on single isolated K+ cation exhibit adsorption heat of only 26.2 kJ mol(-1) and adsorption heat of isocarbonyls was 21.5 kJ mol(-1).	adsorption heat; carbon monoxide; zeolite; FER; calorimetry; FTIR

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