Desilication of SSZ-33 zeolite ? Post-synthesis modification of textural and acidic properties

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F15%3A00437627" target="_blank" >RIV/61388955:_____/15:00437627 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.cattod.2014.07.046" target="_blank" >http://dx.doi.org/10.1016/j.cattod.2014.07.046</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.cattod.2014.07.046" target="_blank" >10.1016/j.cattod.2014.07.046</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Desilication of SSZ-33 zeolite ? Post-synthesis modification of textural and acidic properties

Popis výsledku v původním jazyce

Desilication conditions (concentration of NaOH, duration of the treatment) of SSZ-33 zeolite (CON topology) were investigated in respect to the textural and acidic properties of the obtained materials. As-synthesized borosilicate SSZ-33 was transformed by isomorphous substitution to Al-form. The alkaline treatment of Al-SSZ-33 zeolite resulted in the formation of mesopores and enhanced accessibility of Br?nsted acid sites. The increase in the mesopore volume and also changes in the concentration of acidsites depends mainly on the concentration (pH) of the treatment. Simultaneously, the increase in the pH of the alkaline solution led to the slight increase in Br?nsted acid sites and substantial decrease in the micropore volume more than 50%, in comparison with the parent material while the volume of mesopores increased significantly. All desilicated SSZ-33 zeolites are characterized by a broad mesopore-size distribution in the range of 5?20 nm with the maximum depending both on the har

Název v anglickém jazyce

Desilication of SSZ-33 zeolite ? Post-synthesis modification of textural and acidic properties

Popis výsledku anglicky

Desilication conditions (concentration of NaOH, duration of the treatment) of SSZ-33 zeolite (CON topology) were investigated in respect to the textural and acidic properties of the obtained materials. As-synthesized borosilicate SSZ-33 was transformed by isomorphous substitution to Al-form. The alkaline treatment of Al-SSZ-33 zeolite resulted in the formation of mesopores and enhanced accessibility of Br?nsted acid sites. The increase in the mesopore volume and also changes in the concentration of acidsites depends mainly on the concentration (pH) of the treatment. Simultaneously, the increase in the pH of the alkaline solution led to the slight increase in Br?nsted acid sites and substantial decrease in the micropore volume more than 50%, in comparison with the parent material while the volume of mesopores increased significantly. All desilicated SSZ-33 zeolites are characterized by a broad mesopore-size distribution in the range of 5?20 nm with the maximum depending both on the har

Druh

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

CEP obor

CF - Fyzikální chemie a teoretická chemie

OECD FORD obor

—

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

2015

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

—

Svazek periodika

243

Číslo periodika v rámci svazku

APR 2015

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

7

Strana od-do

46-52

Kód UT WoS článku

000347049900007

EID výsledku v databázi Scopus

2-s2.0-84906072765