Swelling and Interlayer Chemistry of Layered MWW Zeolites MCM-22 and MCM-56 with High Al Content

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F15%3A00454738" target="_blank" >RIV/61388955:_____/15:00454738 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1021/acs.chemmater.5b01030" target="_blank" >http://dx.doi.org/10.1021/acs.chemmater.5b01030</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/acs.chemmater.5b01030" target="_blank" >10.1021/acs.chemmater.5b01030</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Swelling and Interlayer Chemistry of Layered MWW Zeolites MCM-22 and MCM-56 with High Al Content

Popis výsledku v původním jazyce

Swelling of layered zeolite precursors such as MCM-22P with cationic surfactants at high pH is the key step in their subsequent conversion into expanded lamellar materials by pillaring and delamination. Increasing Al content in the precursors can yield more active catalysts but affects their swelling efficiency especially at lower temperature, which was reported as favorable for layer structure preservation with more siliceous MCM-22P. The latter, a (multi)layered precursor, was investigated in this work and showed inadequate swelling of its high-Al representatives with organic hydroxide/surfactant mixtures and especially when NaOH is the source of high pH. In contrast, the unilamellar MCM-56 was found to swell readily at room temperature with varioushydroxide sources, and notably with NaOH, in combination with the surfactant. The observed differences between MCM-56 and MCM-22P, especially with regard to swelling with NaOH, are attributed to the fundamentally different nature of their

Název v anglickém jazyce

Swelling and Interlayer Chemistry of Layered MWW Zeolites MCM-22 and MCM-56 with High Al Content

Popis výsledku anglicky

Swelling of layered zeolite precursors such as MCM-22P with cationic surfactants at high pH is the key step in their subsequent conversion into expanded lamellar materials by pillaring and delamination. Increasing Al content in the precursors can yield more active catalysts but affects their swelling efficiency especially at lower temperature, which was reported as favorable for layer structure preservation with more siliceous MCM-22P. The latter, a (multi)layered precursor, was investigated in this work and showed inadequate swelling of its high-Al representatives with organic hydroxide/surfactant mixtures and especially when NaOH is the source of high pH. In contrast, the unilamellar MCM-56 was found to swell readily at room temperature with varioushydroxide sources, and notably with NaOH, in combination with the surfactant. The observed differences between MCM-56 and MCM-22P, especially with regard to swelling with NaOH, are attributed to the fundamentally different nature of their

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/GAP106%2F12%2F0189" target="_blank" >GAP106/12/0189: Dvojrozměrné zeolity s říditelnou architekturou</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

Chemistry of Materials

ISSN

0897-4756

e-ISSN

—

Svazek periodika

27

Číslo periodika v rámci svazku

13

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

10

Strana od-do

4620-4629

Kód UT WoS článku

000358104700015

EID výsledku v databázi Scopus

2-s2.0-84937231379