Deactivation Pathways of the Catalytic Activity of Metal? Organic Frameworks in Condensation Reactions

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F13%3A00392934" target="_blank" >RIV/61388955:_____/13:00392934 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1002/cctc.201200643" target="_blank" >http://dx.doi.org/10.1002/cctc.201200643</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/cctc.201200643" target="_blank" >10.1002/cctc.201200643</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Deactivation Pathways of the Catalytic Activity of Metal? Organic Frameworks in Condensation Reactions

Popis výsledku v původním jazyce

In the present study we have selected three different condensation reactions as model reactions, namely the hydroxylalkylation of anisole by paraformaldehyde to bis(methoxyphenyl)- methane, the Pechmann condensation of phenols with ethyl acetoacetate (EAA) to coumarins and the Knoevenagel condensation of two aldehydes with three active methylene compounds to form a,b-unsaturated esters and nitriles, using two related Fe-containing metal?organic frameworks (MOFs), namely commercial Fe(BTC) (BTC: 1,3,5-benzenetricarboxylate) and synthetic MIL-100(Fe) as the catalysts. The main aim of this study was to determine the nature of the poisons, the MOF structural stability in connection with the substrate, and the variations in the product selectivity. We havefound that undesired intermediates (bisarylmethyl cation in the case of hydroxyalkylation) or byproducts (benzoic acid in the case of Knoevenagel condensation) can poison the MOF by being strongly adsorbed within the MOFs and blocking the

Název v anglickém jazyce

Deactivation Pathways of the Catalytic Activity of Metal? Organic Frameworks in Condensation Reactions

Popis výsledku anglicky

In the present study we have selected three different condensation reactions as model reactions, namely the hydroxylalkylation of anisole by paraformaldehyde to bis(methoxyphenyl)- methane, the Pechmann condensation of phenols with ethyl acetoacetate (EAA) to coumarins and the Knoevenagel condensation of two aldehydes with three active methylene compounds to form a,b-unsaturated esters and nitriles, using two related Fe-containing metal?organic frameworks (MOFs), namely commercial Fe(BTC) (BTC: 1,3,5-benzenetricarboxylate) and synthetic MIL-100(Fe) as the catalysts. The main aim of this study was to determine the nature of the poisons, the MOF structural stability in connection with the substrate, and the variations in the product selectivity. We havefound that undesired intermediates (bisarylmethyl cation in the case of hydroxyalkylation) or byproducts (benzoic acid in the case of Knoevenagel condensation) can poison the MOF by being strongly adsorbed within the MOFs and blocking the

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

<a href="/cs/project/GBP106%2F12%2FG015" target="_blank" >GBP106/12/G015: Vývoj nových nanoporézních adsorbentů a katalyzátorů</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2013

Kód důvěrnosti údajů

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

Název periodika

ChemCatChem

ISSN

1867-3880

e-ISSN

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Svazek periodika

5

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

9

Strana od-do

1553-1561

Kód UT WoS článku

000319680800044

EID výsledku v databázi Scopus

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