Preparation of Nanosized Micro/Mesoporous Composites via Simultaneous Synthesis of Beta/MCM-48 Phases.

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F03%3A54030132" target="_blank" >RIV/61388955:_____/03:54030132 - isvavai.cz</a>

Výsledek na webu

—

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

Preparation of Nanosized Micro/Mesoporous Composites via Simultaneous Synthesis of Beta/MCM-48 Phases.

Popis výsledku v původním jazyce

Micro/mesoporous composites with nanoscale domains were prepared via simultaneous hydrothermal (HT) treatment of a MCM-48 precursor solution and a colloidal solution containing X-ray amorphous aluminosilicate precursors. Regardless of the composite materials, the method involved two steps: i) preparation of two separate precursor solutions, one for nanosized aluminosilicate seeds via hydrothermal treatment of colloidal precursors resulting in zeolite Beta (100 .DEG.C, 3-7 days), the other one being freshly prepared precursor for synthesis of MCM-48 mesoporous materials, and ii) HT treatment of a mixture containing the two solutions at 100 .DEG.C for various crystallization times. The composite materials were obtained by optimizing the silica source used for the preparation of the two precursor solutions, the Si/Al ratios, and the amount of the surfactant used for MCM-48 mesophase. Micro/mesoporous composites were characterized by various techniques and compared with the pure MCM-48.

Název v anglickém jazyce

Preparation of Nanosized Micro/Mesoporous Composites via Simultaneous Synthesis of Beta/MCM-48 Phases.

Popis výsledku anglicky

Micro/mesoporous composites with nanoscale domains were prepared via simultaneous hydrothermal (HT) treatment of a MCM-48 precursor solution and a colloidal solution containing X-ray amorphous aluminosilicate precursors. Regardless of the composite materials, the method involved two steps: i) preparation of two separate precursor solutions, one for nanosized aluminosilicate seeds via hydrothermal treatment of colloidal precursors resulting in zeolite Beta (100 .DEG.C, 3-7 days), the other one being freshly prepared precursor for synthesis of MCM-48 mesoporous materials, and ii) HT treatment of a mixture containing the two solutions at 100 .DEG.C for various crystallization times. The composite materials were obtained by optimizing the silica source used for the preparation of the two precursor solutions, the Si/Al ratios, and the amount of the surfactant used for MCM-48 mesophase. Micro/mesoporous composites were characterized by various techniques and compared with the pure MCM-48.

Druh

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

CEP obor

CF - Fyzikální chemie a teoretická chemie

OECD FORD obor

—

Projekt

—

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2003

Kód důvěrnosti údajů

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

Název periodika

Microporous and Mesoporous Materials

ISSN

1387-1811

e-ISSN

—

Svazek periodika

64

Číslo periodika v rámci svazku

N/A

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

10

Strana od-do

165-174

Kód UT WoS článku

—

EID výsledku v databázi Scopus

—