The quantity of Cu+ ions forming isolated and bridged carbonyl complexes in FER zeolites determined by IR spectroscopy

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F12%3A39895165" target="_blank" >RIV/00216275:25310/12:39895165 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.vibspec.2011.11.010" target="_blank" >http://dx.doi.org/10.1016/j.vibspec.2011.11.010</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.vibspec.2011.11.010" target="_blank" >10.1016/j.vibspec.2011.11.010</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The quantity of Cu+ ions forming isolated and bridged carbonyl complexes in FER zeolites determined by IR spectroscopy

Popis výsledku v původním jazyce

The integral absorption coefficients for IR bands of carbonyl complexes formed in Cu+Me+-FER zeolites (Me = Na, K, Cs) were determined. Previous work on such systems based on combination of several experimental techniques and perDFT calculations showed that stable monodentate carbonyls on isolated cations in the so-called single cation sites (SCS) Cut(+)-CO and Cu+-CO-Me+ (Me = K, Cs) complexes, where CO molecule is bridging two nearby cations in the so-called heterogeneous dual cation sites (DCS), areformed. In this contribution we made an attempt to determine the quantity of individual carbonyl types using the analysis of IR spectra for CO monolayer coverage on Cu+Me+-FER samples varying in copper content, type of co-cation and nominal Si/Al ratio.Study results in conclusion that IR absorption for SCS (band at 2156cm(-1)) and heterogeneous DCS (bands at 2138 and 2112cm(-1)) complexes has the same magnitude and reaches 21.5cm mu mol(-1). The 95% confidence limits were estimated at +

Název v anglickém jazyce

The quantity of Cu+ ions forming isolated and bridged carbonyl complexes in FER zeolites determined by IR spectroscopy

Popis výsledku anglicky

The integral absorption coefficients for IR bands of carbonyl complexes formed in Cu+Me+-FER zeolites (Me = Na, K, Cs) were determined. Previous work on such systems based on combination of several experimental techniques and perDFT calculations showed that stable monodentate carbonyls on isolated cations in the so-called single cation sites (SCS) Cut(+)-CO and Cu+-CO-Me+ (Me = K, Cs) complexes, where CO molecule is bridging two nearby cations in the so-called heterogeneous dual cation sites (DCS), areformed. In this contribution we made an attempt to determine the quantity of individual carbonyl types using the analysis of IR spectra for CO monolayer coverage on Cu+Me+-FER samples varying in copper content, type of co-cation and nominal Si/Al ratio.Study results in conclusion that IR absorption for SCS (band at 2156cm(-1)) and heterogeneous DCS (bands at 2138 and 2112cm(-1)) complexes has the same magnitude and reaches 21.5cm mu mol(-1). The 95% confidence limits were estimated at +

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CF - Fyzikální chemie a teoretická chemie

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2012

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Vibrational Spectroscopy

ISSN

0924-2031

e-ISSN

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Svazek periodika

58

Číslo periodika v rámci svazku

January

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

7

Strana od-do

146-152

Kód UT WoS článku

000300600500019

EID výsledku v databázi Scopus

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