Measuring the Bronsted acid strength of zeolites - does it correlate with the O-H frequency shift probed by a weak base?

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F14%3A10210799" target="_blank" >RIV/00216208:11310/14:10210799 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61388955:_____/14:00435002 RIV/00216275:25310/14:39898159

Výsledek na webu

<a href="http://pubs.rsc.org/en/content/articlepdf/2014/cp/c3cp54738h" target="_blank" >http://pubs.rsc.org/en/content/articlepdf/2014/cp/c3cp54738h</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/C3CP54738H" target="_blank" >10.1039/C3CP54738H</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Measuring the Bronsted acid strength of zeolites - does it correlate with the O-H frequency shift probed by a weak base?

Popis výsledku v původním jazyce

Bronsted-acid zeolites are currently being used as catalysts in a wide range of technological processes, spanning from the petrochemical industry to biomass upgrade, methanol to olefin conversion and the production of fine chemicals. For most of the involved chemical processes, acid strength is a key factor determining catalytic performance, and hence there is a need to evaluate it correctly. Based on simplicity, the magnitude of the red shift of the O-H stretching frequency, D n (OH) , when the Bronsted-acid hydroxyl group of protonic zeolites interacts with an adsorbed weak base (such as carbon monoxide or dinitrogen) is frequently used for ranking acid strength. Nevertheless, the enthalpy change, D H 0 , involved in that hydrogen-bonding interactionshould be a better indicator; and in fact D n (OH) and D H 0 are often found to correlate among themselves, but, as shown herein, that is not always the case. We report on experimental determination of the interaction (at a low temperatu

Název v anglickém jazyce

Measuring the Bronsted acid strength of zeolites - does it correlate with the O-H frequency shift probed by a weak base?

Popis výsledku anglicky

Bronsted-acid zeolites are currently being used as catalysts in a wide range of technological processes, spanning from the petrochemical industry to biomass upgrade, methanol to olefin conversion and the production of fine chemicals. For most of the involved chemical processes, acid strength is a key factor determining catalytic performance, and hence there is a need to evaluate it correctly. Based on simplicity, the magnitude of the red shift of the O-H stretching frequency, D n (OH) , when the Bronsted-acid hydroxyl group of protonic zeolites interacts with an adsorbed weak base (such as carbon monoxide or dinitrogen) is frequently used for ranking acid strength. Nevertheless, the enthalpy change, D H 0 , involved in that hydrogen-bonding interactionshould be a better indicator; and in fact D n (OH) and D H 0 are often found to correlate among themselves, but, as shown herein, that is not always the case. We report on experimental determination of the interaction (at a low temperatu

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

2014

Kód důvěrnosti údajů

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

Název periodika

Physical Chemistry Chemical Physics

ISSN

1463-9076

e-ISSN

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Svazek periodika

16

Číslo periodika v rámci svazku

21

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

6

Strana od-do

10129-10141

Kód UT WoS článku

000335924800037

EID výsledku v databázi Scopus

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