Modification of textural and acidic properties of -SVR zeolite by desilication

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F14%3A00427872" target="_blank" >RIV/61388955:_____/14:00427872 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.cattod.2013.11.063" target="_blank" >http://dx.doi.org/10.1016/j.cattod.2013.11.063</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.cattod.2013.11.063" target="_blank" >10.1016/j.cattod.2013.11.063</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Modification of textural and acidic properties of -SVR zeolite by desilication

Popis výsledku v původním jazyce

Desilication conditions (concentration of NaOH and TPAOH solution, duration of the treatment) of SVR zeolite were varied and related to the textural and acidic properties of the obtained materials. The treatment of -SVR zeolite with NaOH solution led tothe formation of mesopores and also the increasing of the concentration of surface acid sites, accessible for bulky molecules (e.g. 2,6-ditertbutyl-pyridine). The volume of mesopores as well as the concentration of accessible acid centres in desilicatedmaterials depends mainly on the concentration of the alkaline solution. The increase in the pH of the treatment resulted in moderate decrease of both micropore volume and Bronsted acid sites concentration, while the volume of mesopores increased significantly. Independently of the duration and pH of the treatment with NaOH solution, all desilicated -SVR zeolites are characterized by broad pore-size distribution in the range of 5-20 nm with the maximum around 14 nm. At fixed pH of the tre

Název v anglickém jazyce

Modification of textural and acidic properties of -SVR zeolite by desilication

Popis výsledku anglicky

Desilication conditions (concentration of NaOH and TPAOH solution, duration of the treatment) of SVR zeolite were varied and related to the textural and acidic properties of the obtained materials. The treatment of -SVR zeolite with NaOH solution led tothe formation of mesopores and also the increasing of the concentration of surface acid sites, accessible for bulky molecules (e.g. 2,6-ditertbutyl-pyridine). The volume of mesopores as well as the concentration of accessible acid centres in desilicatedmaterials depends mainly on the concentration of the alkaline solution. The increase in the pH of the treatment resulted in moderate decrease of both micropore volume and Bronsted acid sites concentration, while the volume of mesopores increased significantly. Independently of the duration and pH of the treatment with NaOH solution, all desilicated -SVR zeolites are characterized by broad pore-size distribution in the range of 5-20 nm with the maximum around 14 nm. At fixed pH of the tre

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/GP13-17593P" target="_blank" >GP13-17593P: Využití nových organických templátů pro syntézu zeolitů</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

Catalysis Today

ISSN

0920-5861

e-ISSN

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Svazek periodika

227

Číslo periodika v rámci svazku

MAY 2014

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

7

Strana od-do

26-32

Kód UT WoS článku

000332412900005

EID výsledku v databázi Scopus

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